Dissertations / Theses: 'Dendrimers. Polymers in dentistry'

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Preston, Adam J. "Structural and functional relationships in dendrimers Part 1: synthesis and study of liquid crystalline dendrimers as additives to dental composites. Part 2: effect of selective metal coordination on dendrimer structure /." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1104355003.

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Thesis (Ph. D.)--Ohio State University, 2005.
Title from first page of PDF file. Document formatted into pages; contains xxvi, 533 p.; also includes graphics (some col.) Includes bibliographical references (p. 259-292).

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Paul, Noel Michael. "Studies in dendritic secondary structural control." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1104365307.

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Thesis (Ph. D.)--Ohio State University, 2005.
Title from first page of PDF file. Document formatted into pages; contains xix, 343 p.; also includes graphics (some col.) Includes bibliographical references (p. 325-343).

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Nyström, Andreas. "Dendrimers and dendronized polymers : synthesis and characterization." Doctoral thesis, KTH, Fiber- och polymerteknik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3970.

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The goal of this work was to synthesize complex macromolecular architectures such as dendrimers and dendronized polymers, and evaluate the effect from the dendrons on the optical and material properties. The work presented in this doctoral thesis, Dendrimers and Dendronized Polymers - Synthesis and Characterization, is divided into one minor and one major part. The first part deals with the synthesis and characterization of two sets of dendritic porphyrins based on 2,2-bis(methylol)propionic acid (bis-MPA). The second part deals with the synthesis and characterization of dendronized poly(hydroxyl ethyl methacylate), dendronized poly(norbornene), and dendronized triblock copolymers, were the pendant dendrons are based on bis-MPA. Both free-base and zinc containing dendritic porphyrins was synthesized up to the fifth generation by employing iterative ester coupling utilizing the acetonide protected anhydride of bis-MPA as generic building block. First and second generation dendron bearing methacrylates based on 2-hydroxyethyl methacrylate were also synthesized by utilizing the acetonide protected anhydride of bis-MPA, and subsequently polymerized by atom transfer radical polymerization. By adopting a divergent “graft-to” approach starting from the first generation dendronized poly(hydroxyl ethyl methacrylate), well-defined dendronized polymers with acetonide, hydroxyl, acetate and hexadecyl surface functionality were obtained. By utilizing the same divergent iterative esterfication, first to fourth generation dendron functionalized norbornenes were synthesized. These monomers were polymerized by ring-opening metathesis polymerization, utilizing either Grubbs´ first or second generation catalyst. Acrylate functional first to fourth generation monomers were synthesized by the copper(I) catalyzed “click” coupling of azido functional dendrons and propargyl acrylate. The monomers were polymerized to dendronized triblock copolymers by reversible addition-fragmentation chain transfer polymerization, utilizing a difunctional poly(methyl methacrylate) as macro chain transfer agent. The bulk properties of the dendronized poly(hydroxyl ethyl methacrylate) and poly(norbornene) were investigated by dynamic rheological measurements and differential scanning calorimetry. It was found that all the acetonide functional bis-MPA based dendronized polymers had glass transitions temperatures in a similar range. The rheological behaviour showed that for the dendronized polymers having the same backbone length the complex viscosity as a function of functionality was independent of the surface functionality of the polymer. The generation number of the polymer had a profound influence on the complex viscosity, changing form a Newtonian behaviour to a shear thinning behaviour when the generation of the dendrons was increased from two to four. The dendronized poly(norbornene) had increasingly shorter backbone lengths for each generational increase, and for the materials set with comparably lower degree of polymerization, the G’ part of the complex modulus was mostly affected by attaching larger dendrons. In the case of the sample set of higher degree of polymerization, the second, third, and fourth generation samples had similar slopes of the G’ and G” curves, indicating a similar relaxation behaviour.
QC 20100914

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Nyström, Andreas. "Dendrimers and dendronized polymers : synthesis and characterization /." Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3970.

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Nimmagadda, Alekhya. "Design, Synthesis, Applications of Polymers and Dendrimers." Scholar Commons, 2017. https://scholarcommons.usf.edu/etd/7430.

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WHO has reported that antibiotic resistance is the third major cause of human death all over the globe. Recent study, has focused on the development of new antibacterial resistance drugs. Herein, we tried to synthesis a series of polymers that can mimic the HDPs. HDPs can target the bacterial cell membrane and they have less chances to develop bacterial resistance. We synthesized the amphiphilic polycarbonates that are highly selective to Gram-positive bacteria, including multidrug resistant pathogens. The membrane disruption activity of these polymers was proved by fluorescence and TEM studies and the drug resistance study showed that the polymers don’t develop bacterial resistance. In order to further design the molecules that can target a broad spectrum of bacteria, we have designed a series of lipidated dendrimers that can target the Gram-positive and Gram-negative bacteria. These dendrimers mimic the HDPs and target the bacterial cell membrane. Dendrimers are reported to inhibit the formation of bacterial biofilm which makes them promising for their future development of antibiotic agents. Apart from the synthesis of polymers and dendrimers as antibacterial agents, we have designed a series of small molecular antibacterial agents that are based on the acylated reduced amide scaffold and small dimeric cyclic guanidine derivatives. These molecules display good potency against a panel of multidrug-resistant Gram-positive and Gram-negative bacterial strains. Meanwhile, they also effectively inhibit the biofilm formation. Mechanistic studies suggest that these compounds kill bacteria by compromising bacterial membranes, a mechanism analogous to that of host-defense peptides (HDPs). Lastly, we also demonstrate that these molecules have excellent in vivo activity against MRSA in a rat model. This class of compounds could lead to an appealing class of antibiotic agents combating drug-resistant bacterial strains.

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Halim, Mounir. "Light-emission from conjugated dendrimers and polymers." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4297/.

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This thesis reports the photophysical and electroluminescence studies undertaken on two types of material: polymeric and dendritic. The dendritic architecture is a recent concept adopted to develop new materials for light-emitting diodes. The dendritic structure offers a combination of properties of both polymers and small organic molecules whilst having their own interesting characteristic of optimising processibility, charge transport, and optical properties independently. The dendritic structure consists of functional surface groups, conjugated dendrons and a conjugated core. Initial optical (absorption and photoluminescence) studies revealed that the dendrimer emission originates from the core and is independent of excitation wavelength. This was investigated further in distyrylbenzene based dendrimers where the effect of dendrimer generation number on photoluminescence and electroluminescence properties was studied. All dendrimers emit blue electroluminescence with, in some cases, reasonable electroluminescence quantum efficiency in the range of 0.09 % and brightness up to 150 Cd m(^-2). Having established that the furmel effect, where excitation is successfully transferred to the dendrimer core in both PL and EL, different chromophores were incorporated in the dendrimer structure. Colour control was thus demonstrated in EL devices of the different dendrimers, showing the possibility of using a large number of chromophores in a processible form for EL applications. Conjugated polymers were also studied to investigate the nature of the emitting species (poly(p-pyridine)) and the effect of side- chains (poly(p-phenylenevinylene)). In poly(p-pyridine) the emission was found to be strongly dependent on pyridyl ring rotation affecting the emission and its quantum yield while the side-chains in the poly(p-phenylenevinylene) derivatives were found to affect polymer properties such as degree of conversion of non-conjugated to conjugated polymer. The PL quantum yield system was set-up and proved useful in assessing synthesis of new materials.

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Örtegren, Jonas. "Liquid crystalline polymers for nonlinear optics : pyroelectric polymers and ferroelectric dendrimers /." Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3190.

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Sahota, Hardeep. "Synthesis and applications of polyester dendrimers and hyperbranched polymers." Thesis, University of Warwick, 1996. http://wrap.warwick.ac.uk/106909/.

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Dendrimers are an important new class of macromolecule which have many potential applications from drug delivery to metal extraction. A number of methods have been developed for the synthesis of dendrimers and related hyperbranched polymers. We chose the divergent initiator core method to synthesise three series of dendrimers with phloroglucinol, hydroquinone and naphthalene-2,6-diol as the core moieties, using DCC in the presence of DPTS as the esterification agent. The fluorescence of the naphthalene core was used to investigate the microenvironment of the core. Early investigations indicate there is a marked change in the core’s environment between generations two and four. MALD1-MS was tested as a method for the analysis of dendrimers and hyperbranched polymers. Molecular masses of dendrimers were obtained within 2 Da in every case, although low mass ions are sometimes observed. The origin of the low mass species is not yet entirely clear although there are indications that these arise from both the MALDI-MS process and during synthesis. 'lhe synthesis of poly(3,5-dihydroxybenzoic acid), again using the DCC- DPTS esterification agent was investigated. This method was found to give hyperbranched polymers which were difficult to handle. Studies by MALDI-MS indicate the difficult handling properties are a result of DCC being bound to the hyperbranched polymer. Thus, a modification of Fréchet’s method was used to prepare poly(3,5-dihydroxybenzoic acid). It was demonstrated that the hydroxyl terminated dendrimers and hyperbranched polymers could be functionalized at the branch termini with units such as acetyl, pent-4-enoyl, oleoyl and lineoyl. Epoxy terminated dendrimers and hyperbranched polymers were also prepared. The epoxy terminated dendrimers were analysed as potential crosslinking agents for polyester powder coatings. Initial results indicate that the epoxy groups prefer to react with one another rather than with the resin and thus little curing of the resin was observed.

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Taylor, Rupert. "Organic molecules, dendrimers and sulfur-based polymers of intrinsic microporosity." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/52947/.

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The research in this thesis is centred on the synthesis of novel organic molecules of intrinsic microporosity (OMIMs), dendrimers of intrinsic microporosity (DIMs) and sulfur-based polymers of intrinsic microporosity (sPIMs). OMIMs are a new class of discretely amorphous microporous materials, synthesised by the combination of functionalised cores and termini that share awkward molecular geometries exploited to generate microporosity in polymers of intrinsic microporosity (PIMs). OMIMs presented in this thesis are prepared by the combination of fluorinated biphenyl or terphenyl cores with dihydroxy (catechol) based benzene, naphthalene or triptycene termini. Through a systematic study of substituted termini, a structure-property relationship is established and applied to generate highly soluble OMIMs possessing apparent BET surface areas within the range of 7 – 726 m2 g-1, as measured by nitrogen sorption at 77 K. The second section on DIMs is an expansion of the work on OMIMs. By isolating tri-substituted biphenyl cores (branch units), first generation dendrimers are afforded by the reaction of a branch unit with a suitably functionalised core. DIMs in this thesis centre around the 9,10-diethyltriptycene-2,3,6,7,13,14-hexaol core, and give rise to apparent BET surface areas within the range of 300 – 722 m2 g-1, as measured by nitrogen sorption at 77 K. The final section of this thesis focuses around the monomer synthesis and subsequent polymerisations of three spirobisindane based sPIMs (sPIM-0, sPIM-1 and sPIM-2). Whereas typical PIMs exploit catechol containing monomers to generate dibenzodioxane containing polymers, sPIMs employ dithiol containing monomers to generate thianthrene containing polymers. These thianthrene units could lead to enhanced gas separation properties of the polymer before or after post-polymerisation oxidation to sulfones or sulfoxides. All three sPIMs were found to be microporous, possessing apparent BET surface areas within the range 438 – 510 m2 g-1, as measured by nitrogen sorption at 77 K.

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Wang, Haipeng 1968. "Characterisation of some dendritic polymers, copolymers, blends and nanocomposites." Monash University, School of Physics and Materials Engineering, 2002. http://arrow.monash.edu.au/hdl/1959.1/8420.

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Norton, Lisa K. "Spectroscopic investigations of dendritic polymers as molecular containers." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/6102.

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Thesis (M.S.)--University of Missouri-Columbia, 2008.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on September 22, 2008) Includes bibliographical references.

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Kotta, Kishore Kumar. "Design, Synthesis, and Characterization of [1 → 3]; [1 → (2 + 1 Me)]; [1 → (2 + 1)] C-Branched Dendrons and Dendritic Architectures." Akron, OH : University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1137081672.

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Thesis (Ph. D.)--University of Akron, Dept. of Chemistry, 2006.
"May, 2006." Title from electronic dissertation title page (viewed 09/17/2006). Advisor, George R. Newkome; Committee members, Michael J. Taschner, David A. Modarelli, Chrys Wesdemiotis, Robert R. Mallik; Department Chair, Michael J. Taschner; Dean of the College, Ronald F. Levant; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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Krause, Tilo. "Star Polymers and Dendrimers Based on Highly Functional Resorcin- and Pyrogallolarenes." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1183015386384-28696.

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In the frame of this thesis different calix[4]resorcin- and calix[4]pyrogallolarene derivatives were used as platform for the synthesis of novel star polymers and dendritic structures. The objectives of this work can be portrayed under the following points: First: Synthesis and modification of calix[4]resorcin- and calix[4]pyrogallolarenes with a varying number and varying type of functional sites and their precise characterization by modern NMR techniques and single crystal X-ray diffraction. Second: Synthesis of well-defined star polymers and dendrimers with different number of arms and accordingly dendrons, based on calix[4]resorcin- and calix[4]pyrogallolarenes, via convenient polymerization and generation growth reactions and analysis of the obtained products by different methods (MALDI-TOF-MS, SEC-RI and SEC-MALLS, NMR).

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Haller, Marnie A. "Characterization of nonlinear optical polymers and dendrimers for electro-optic applications /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/10602.

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Krause, Tilo. "Star Polymers and Dendrimers Based on Highly Functional Resorcin- and Pyrogallolarenes." Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A24791.

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In the frame of this thesis different calix[4]resorcin- and calix[4]pyrogallolarene derivatives were used as platform for the synthesis of novel star polymers and dendritic structures. The objectives of this work can be portrayed under the following points: First: Synthesis and modification of calix[4]resorcin- and calix[4]pyrogallolarenes with a varying number and varying type of functional sites and their precise characterization by modern NMR techniques and single crystal X-ray diffraction. Second: Synthesis of well-defined star polymers and dendrimers with different number of arms and accordingly dendrons, based on calix[4]resorcin- and calix[4]pyrogallolarenes, via convenient polymerization and generation growth reactions and analysis of the obtained products by different methods (MALDI-TOF-MS, SEC-RI and SEC-MALLS, NMR).

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Malik, Navid. "Dendrimers : evaluation as novel carriers of anti-cancer agents." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313786.

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Morgan, Joel Ryan. "The synthesis of glycodendrimers and their applications in carbohydrate-protein interactions and catalysis." Diss., Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/morgan/MorganJ0806.pdf.

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Richter-Egger, Dana L. "Spectroscopic investigations of poly(amidoamine) and poly(propyleneimine) dendrimers /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3025648.

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Hu, Lang. "Self-assembling Behavior of Dendrimers and Nanocages in Solution Driven by Counter-ion Mediated Interactions." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1447152515.

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Acosta, Otero Erick J. "Synthesis and application of dendrimers on solid supports." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/1576.

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The synthesis, characterization and application of dendrimers on solid supports are described. Melamine-based dendrimers are incorporated on clay minerals and silica gel. The hybrid materials are characterized using a variety of analytical techniques including thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and mass spectrometry (MS). The first chapter gives an overview of the two main methods, convergent and divergent, for the synthesis of dendrimers. It also describes the synthesis of melamine-based dendrimers and their advantages over conventional dendrimers. Synthetic strategies and applications of dendrimers at surfaces are discussed. The preparation of organoclay materials containing dendritic surfactants is presented in the second chapter. The morphology of these organoclays is studied by X-ray powder diffraction (XPD). A new type of morphology is observed when large dendritic surfactants are incorporated onto the clay. This new morphology is described as frustrated intercalation. The ability of the dendritic organoclay composites to recognize small organic molecules in water is presented in the third chapter. Atrazine, a commonly used herbicide, is used as a model compound. Structure-activity relationship studies were conducted in order to gain some insight on the recognition and sequestration mechanisms. In the fourth chapter, reactive resins are evaluated for the covalent sequestration of monochlorotriazines from organic and aqueous solutions. The sequestration is monitored spectrophotometrically and using liquid chromatography coupled to a mass spectrometer (LC-MS). 1H NMR spectroscopy and MS are used to identify the covalent adducts formed between the monochlorotriazines and the resins. The efficiency of the resin is compared to several types of charcoal using aqueous solutions of atrazine. The final chapter describes the attachment of melamine-based dendrimers onto silica gels. Dendrimers are incorporated to the silica gel surface using two synthetic strategies, the stepwise growth strategy (SGS) and the "attach-to" strategy (ATS). These composites are also evaluated for their ability to remove atrazine from aqueous solutions.

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Kline, Katrina K. Tucker Sheryl A. "Comparison of hyperbranched and dendritic polymers with fluorescent reporter molecules." Diss., Columbia, Mo. : University of Missouri-Columbia, 2009. http://hdl.handle.net/10355/6780.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on March 26, 2010). Thesis advisor: Dr. Sheryl Tucker. Vita. Includes bibliographical references.

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Gide, Mussie. "Design, Synthesis, Application of Biodegradable Polymers." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7625.

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Bacterial infections have posed a serious threat to the public health due to the significant rise of the infections caused by antibiotic-resistant bacteria. There has been considerable interest in the development of antimicrobial agents which mimic the natural HDPs, and among them biodegradable polymers are newly discovered drug candidates with ease of synthesis and low manufacture cost compared to synthetic host defense peptides. Herein, we present the synthesis of biocompatible and biodegradable polymers including polycarbonate polymers, unimolecular micelle hyperbranched polymers and dendrimers that mimic the antibacterial mechanism of HDPs by compromising bacterial cell membranes. The developed amphiphilic polycarbonates are highly selective to Gram-positive bacteria, including multidrug-resistant pathogens and the unimolecular micelle hyperbranched polymers showed promising broad-spectrum activity. However, lipidated amphiphilic dendrimers with low molecular weight display potent and selective antimicrobial activity against both Gram-positive and Gram-negative bacteria, including multidrug-resistant strains. In addition to antibacterial activity against planktonic bacteria, these dendrimers were also shown to inhibit bacterial biofilms effectively. These class of polymers may lead to a useful generation of antibiotic agents with practical applications.

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Goyal, Poorva. "Development of dendritic and polymeric scaffolds for biological and catalysis applications." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24826.

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Thesis (Ph.D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2008.
Committee Chair: Weck, Marcus; Committee Member: Bunz, Uwe H. F.; Committee Member: Dickson, Robert M; Committee Member: Fahrni, Christoph J; Committee Member: Jones, Christopher W; Committee Member: Murthy, Niren.

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Liang, Liyuan. "Inorganic Aspects of “Click” Chemistry in Polymers and Dendrimers : synthesis, Nanoparticle Stabilization and Catalysis." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14277/document.

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La thèse concerne les aspects inorganiques de la réaction des alcynes terminaux avec les azotures, la principale des réactions dites ”click”. La catalyse de cette réaction par des dendrimères centrés sur le cuivre (I) nous a permis de mettre en évidence des effets dendritiques originaux. Les assemblages dendritiques et polymériques fonctionnels réalisés à l’aide cette réaction “click”, en particulier avec des carboranes, nous ont conduits à la stabilisation de nanoparticules d’or et de palladium à partirde cations coordonnés aux triazoles “click”. La catalyse très efficace dans aqueux milieu et dans les conditions ambiantes de formation de liaison carbone-carbone a été réalisée à l’aide de très faibles quantités de ces nanoparticulesde palladium stabilisées
The thesis concerns aspects of inorganic reaction between organic azides and terminal alkynes, the main “click” reactions. Catalysis of this reaction by copper (I)-centered dendrimers allowed us to highlight the dendritic effects originals. The dendritic and polymeric functional assemblies produced using the "click" reaction, especially with carboranes, led us to the stabilization of gold nanoparticles and palladium from cation-coordinated "click" triazole. The highly efficient catalysis in aqueous medium under ambient conditions of formation of carbon-carbon was carried out using very small amounts of stabilized palladium nanoparticles

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Alageel, Omar. "Bonding between metals and polymers for dental devices." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123299.

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Many dental devices combine acrylic (i.e. poly-methyl methacrylate or bisphenol A-glycidyl methacrylate) and metallic parts (i.e. titanium or stainless steel) that are bonded together. These devices often present catastrophic mechanical failures due to weak bonding between their acrylic and metallic components. These devices include dental prostheses, combining metallic frameworks (i.e. titanium) and wrought wires with acrylic resin; and orthodontic appliances, combining acrylic resin with stainless steel wrought wires or composite with stainless steel brackets. The bonding between metals and polymers in dental devices is usually performed by the mechanical interlocking, but its bond strength is still too low for dental applications. The bond strength between them would be high if the chemical bonding, which does not occur spontaneously, uses in addition to the mechanical interlock. The objective of this study was to develop a new method of creating a strong chemical bond between alloys and polymers for dental devices based on diazonium chemistry.The chemical bond between metals (i.e. titanium or stainless steel) and polymers (i.e. poly-methyl methacrylate, PMMA or Bisphenol A-glycidyl methacrylate, Bis-GMA) was achieved in two steps. In the first reaction step (primer), the aryldiazonium salts were chemically reduced to form aryl radicals which spontaneously got grafted onto the metallic surfaces. The second step of the reaction (adhesive) was optimized to achieve covalent binding between the grafted layer and PMMA or Bis-GMA. The chemical composition of the treated surfaces was analyzed with X-ray photoelectron spectroscopy (XPS), and the bonding strengths between alloys and PMMA or Bis-GMA were measured. XPS characterization and contact angle measurement confirmed the presence of a polymer coat on the treated metallic surfaces. Whereas, the mechanical test results showed a significant increase of the tensile bond strength between PMMA and treated titanium or stainless steel wire by 5.2 and 2.5 folds, respectively, compared to the untreated control group (P<0.05). Moreover, the bonding strength between metallic brackets and Bis-GMA composite was increased after the treatment depending on the bracket design by 2 to 3.9 folds compared to untreated brackets. Diazonium chemistry provides an effective way of achieving a strong chemical bond between alloys and PMMA or Bis-GMA. The resulting bonding method can be utilized to further improve the properties of dental devices, reduce debonding of dental prostheses and brackets, provide more leverage in orthodontic cases with complex mechanics, and allow the use of brackets with smaller bases.
De nombreux appareils dentaires sont composés d'acrylique (c'est à dire d'un poly -méthacrylate de méthyle ou de bisphénol A- glycidyle méthacrylate) et de parties métalliques (par exemple en titane ou en acier inoxydable) qui sont collés ensemble. Ces dispositifs présentent souvent des défaillances mécaniques catastrophiques en raison de la faiblesse de la liaison entre les composantes en acrylique et celles en métal. Ces dispositifs comprennent les prothèses dentaires, alliant des cadres métalliques (c'est à dire de titane) et fils forgé avec de la résine acrylique, et les appareils orthodontiques, combinant de la résine acrylique avec des fils forgé en acier inoxydable ou un composite avec des supports en acier inoxydable. La force de liaison entre eux serait élevée si la liaison chimique, ce qui ne se produit pas spontanément, est utiliser en plus du verrouillage mécanique. Dans la première étape de la réaction, les sels d'aryl diazonium sont réduits chimiquement pour former des radicaux aryles qui sont spontanément greffés sur les surfaces métalliques La deuxième étape de la réaction a été optimisée pour réaliser la liaison entre la couche greffée et le PMMA ou le Bis-GMA. La caractérisation XPS et la mesure de l'angle de contact a confirmé la présence d'une couche de polymère sur les surfaces métalliques traitées. Les résultats des essais mécaniques ont montré une augmentation significative de la force d'adhérence à la traction entre le PMMA et le titane traité ou d'un fil en acier inoxydable de 5,2 et 2,5 plis, respectivement, par rapport au groupe témoin non traité (p < 0,05). La chimie de diazonium fournit un moyen efficace d'atteindre une liaison chimique forte entre les alliages et le PMMA ou le Bis-GMA. Le procédé de collage qui en résulte peut être utilisé pour améliorer les propriétés des appareils dentaires, réduire le décollement de prothèses dentaires et des supports, et permettre l'utilisation de supports avec des bases plus petites.

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Lewis, Andrew J. "Characterisation of organic materials for photovoltaic devices." Thesis, St Andrews, 2006. http://hdl.handle.net/10023/144.

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Sinness, Jessica Schendel. "Design and synthesis of functionalizable ProDOT based chromophores for use in electro-optics /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/11553.

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Bourrier, Olivier E. "3, 5-Dihydroxybenzyl alcohol based dendrimers and hyperbranched polymers : synthesis, characterization and applications in catalysis." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84480.

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A new divergent methodology to prepare a variety of dendritic polymers containing dimethylsilyl-linked-3,5-dihydroxybenzyl alcohol units in the backbone is reported. This simple and versatile synthetic route is based on the acid-base hydrolytic chemistry of 3,5-dihydroxybenzyl alcohol (DHBA) and dimethyldiaminosilane Me2Si(NMe2)2. Controlled sequential addition of reactants was used to prepare dendrimer generations 1--5. The dendritic growth was found to be dictated by a preferential attack of the benzylic hydroxyl group of DHBA on the aminosilane, as no traces of residual benzylic OH groups were observed using 1H NMR spectroscopy. By a continuation of this divergent route, these dendrimers were functionalized with a variety of terminal units, including trimethylsilyl, n-octanoate, organic dye disperse red 1, and hydroxypropyldiphenylphosphine. Uncontrolled reaction protocols using the same reacting partners were also investigated to prepare the corresponding hyperbranched polymers. Resulting macromolecules showed structural fragments ranging from that of dendrimer generation 1 to that of dendrimer generation 2 in their MALDI-TOF mass spectra. Addition of more reactants did not seem to increase the size of these hyperbranched polymers.
Determination of some of the structure-property relationships in these dendrimers was carried out to obtain a better understanding of their potential applications. Hydrolytic stability of the dendrimers was examined using dendrimer generations 1--3 solvated in wet DMSO. Their resistance towards hydrolysis was found to increase with an increase in generation number. Intrinsic viscosities were determined for dendrimer generations 1--5. A non-linear relationship was found between the generation number and the intrinsic viscosity, as it reached a maximum for dendrimer generation 4, followed by a decrease. 3,5-dihydroxybenzyl alcohol based dendrimers were found to self-assemble via hydrogen bonding between terminally situated hydroxyl groups. This phenomenon was found to be dependent on their concentration in solution, and a critical aggregation concentration was determined at 3.7 mg mL-1 for dendrimer generations 1--3. Higher generation dendrimers showed aggregate formation at low concentrations as the number of peripheral OH groups was significantly increased.
By functionalizing dendrimers and hyperbranched polymers with hydroxypropyldiphenylphosphine ligands, followed by coordination with [Rh(COD)Cl], we were able to synthesize metallodendrimers and organometallic hyperbranched polymers, in which active organometallic fragments are present at the periphery. Their catalytic activity was assessed in hydrogenation of 1-decene. Conversion rates of decene into decane for metallodendrimers were found to be dependent on the time of reaction and the generation number. Maximum conversion rates were found after 5 h reaction time in each case.

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Price, Carole Ann. "The effect of compostion of denture base polymers on impact resistance." University of Sydney, 1986. http://hdl.handle.net/2123/4775.

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Master of Dental Surgery
This work was digitised and made available on open access by the University of Sydney, Faculty of Dentistry and Sydney eScholarship . It may only be used for the purposes of research and study. Where possible, the Faculty will try to notify the author of this work. If you have any inquiries or issues regarding this work being made available please contact the Sydney eScholarship Repository Coordinator - ses@library.usyd.edu.au

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30

Vautravers, Nicolas R. "Polyhedral oligomeric silsesquioxanes in catalysis and photoluminescence applications." Thesis, St Andrews, 2009. http://hdl.handle.net/10023/729.

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31

Smith, Gregory Stuart. "An investigation into the synthesis, characterisation and some applications of novel metal-containing polymers and dendrimers of transition metals." Thesis, University of the Western Cape, 2003. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_7323_1358949220.

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Development in the field of materials science is propagated by the synthesis of polynuclear metal-containing complexes, that exhibit enhanced chemical and physical properties. This thesis describes the synthesis of new metal-containing linear polymers and dendritic molecules.

Chapter 1 presents an overview of the field of metal-containing polymers, with particular attention to the synthesis of polymers via condensation polymerisation. This review includes the various types of metal-containing condensation polymers and the applications of these materials, where available. This discussion is followed by a brief summary of metal-containing dendrimers, which includes a concise description of their structure and applications in general.

There are two routes to preparing metal-containing polymers. Chapter 2 describes the synthesis of three bifunctional organometallic monomers, of the general type [M]-O-{2,6-(CH2OH)2-4-CH3-C6H2}, where [M] represents the various metal-containing moieties, (&eta
5-C5H5)(CO)2 Fe(CH2)3 (25), (&eta
5-C5H4-CH2CH2CH2-)Re(CO)3 (26) and Fpdendr (27). These monomers were prepared using 2,6-bis(hydroxymethyl)-p-cresol as the key reagent. The monomers were used in classical polycondensation reactions with terephthaloyl chloride using ambient temperature solution techniques. This yielded new low molecular weight oligomeric polyesters, that were characterised using FTIR and 1HNMR spectroscopy, differential scanning calorimetry, thermogravimetric analysis and sizeexclusion chromatography.

In Chapter 3, an alternate route to metal-containing polymers is described. In this case, bifunctional organic monomers were polymerised to give preformed organic polymers. Two types of organic polymers were prepared, viz. polyesters (with pendant vinyl moieties) and polyimines (with &alpha
-diimine units along the polymer backbone). Functionalisation of these preformed organic polymers with various metal sources was attempted. Hydrozirconation reactions of the vinyl polyesters with Schwartz&rsquo
s reagent, Cp2Zr(H)Cl, were attempted and were largely unsuccessful. Competing reactions with the ester functionality prevailed, preventing the desired reaction. Reaction of the polyimines with PdCl2(COD) yielded insoluble, intractable metal-containing oligomers. Partial characterisation of the complexes is described.

The synthesis of new poly(propylene imine) iminopyridyl metallodendrimers is described in Chapter 4. Schiff-base condensation reaction of the commercially available DAB dendrimers with 2-pyridinecarboxaldehyde, gave the dendrimers 51, 52, and 53, with four, eight and sixteen pyridylimine functionalities respectively on the periphery. Successful complexation reactions with PdCl2(COD), PtCl2(COD) and CuCl2 produced the corresponding metal-containing dendrimers, with either PdCl2 (54, 55, 56), PtCl2 (57) or CuCl2 (58) moieties bound on the periphery. The metallodendrimers were insoluble in the more common organic solvents, and were characterised by IR and 1H-NMR spectroscopy and microanalysis where possible. Dendrimers with salicylaldiminato ligands on the periphery were prepared by reacting the DAB dendrimers with salicylaldehyde. These ligands were reacted with various metal acetates in an attempt to prepare new metalcontaining salicylaldimine dendrimers. This work yielded either paramagnetic metal complexes or insoluble, intractable compounds.

Chapter 5 describes the applications of the catalyst precursors (54, 55, 56, 57, 58), discussed in Chapter 4, in the polymerisation of ethylene and the use of complexes 54 and 55 as Heck cross-coupling catalyst precursors. The complexes all showed catalytic activity toward ethylene polymerisation. A discussion of their activity, the polyethylene molecular weight and microstructure is presented in this chapter. The precursors 54 and 55 are also effective catalysts in the Heck reactions, coupling iodobenzene with methyl acrylate, styrene and 1-octene in high conversions.

General conclusions are given in Chapter 6.

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32

Tarazona, Vasquez Francisco. "Computational study of the complexation of metal ion precursors in dendritic polymers." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2459.

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Walmsley, P. G. S. "Surface characteristics of vinyl polysiloxane impression materials /." Title page, summary and contents only, 1991. http://web4.library.adelaide.edu.au/theses/09DM/09dmw216.pdf.

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34

Kasëmi, Edis. "Efficient synthesis of homologous series of dendrons, dendrimers and dendronized polymers for supramolecular solution and bulk phase applications /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17344.

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35

Walker, Jonathan Keith Earl. "Novel polymers and dendrimers of intrinsic microporosity derived from triptycene and other monomers of high internal free volume." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/55141/.

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The research described in this thesis is largely focused on monomers derived from the triptycene moiety, and their potential to form polymers of intrinsic microporosity (PIMs), organic molecules of intrinsic microporosity (OMIMs) and dendrimers of intrinsic microporosity (DIMs). Triptycene is of particular interest here due to its high internal molecular free volume (IMFV) and previously reported success in the formation of microporous materials - triptycene is in fact the basis of the most microporous PIM reported to date, and the basis of the only reported example of an amorphous molecular microporous material. The work later extends to incorporate other presumed high IMFV moieties based on spirobifluorene and propellane. The research begins by focusing on the synthesis of potentially soluble polymers. They are of interest due to their processability, which when coupled with microporosity, can potentially yield permeable membranes suitable for selective gas separation. There has been much research into PIMs and their corresponding membranes, with particular interest surrounding PIM-1, a polymer formed between a spirobisindane based monomer, and 2,3,5,6-tetrafluoroterephthalonitrile.1 The same nucleophilic aromatic substitution reaction (SNAr) as is used to make PIM-1 is employed throughout this thesis for the formation of final products. The second section of this project focused on the synthesis of network polymers based around triptycene, introducing bitriptycenes, triptycene side groups, and unsymmetrical triptycenes with new functional groups, the main focus on increased surface area. Although highly microporous materials were prepared, no enhancement over previously obtained triptycene polymers was obtained. The third section of the thesis focuses on the synthesis of novel microporous materials termed Organic Molecules of Intrinsic Microporosity (OMIMs) and Dendrimers of Intrinsic Microporosity (DIMs). These are discrete molecules lacking any long range order that cannot pack space efficiently due to their rigid structures, composed of monomer subunits with high IMFV. All materials were analysed for their apparent BET surface areas (N₂ adsorption at 77 K), which were in the range 0-700 m2 g"1.

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Kasemi, Edis. "Efficient synthesis of homologous series of dendrons, dendrimers and dendronized polymers for supramolecular solution and bulk phase applications." kostenfrei, 2007. http://e-collection.ethbib.ethz.ch/view/eth:29925.

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37

Yonkeu, Anne Lutgarde Djoumessi. "Dendritic poly(3-hexylthiophene) star copolymer systems for next generation bulk heterojunction organic photovoltaic cells." University of the Western Cape, 2018. http://hdl.handle.net/11394/6662.

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Philosophiae Doctor - PhD
The continuous increase in energy consumption and decrease in fossil fuels reserves are a primary concern worldwide; especially for South Africa. Therefore, there is an urgent need for alternative energy resources that will be sustainable, and environmentally friendly in order to tackle the ecological degradation generated by the use of fossil fuels. Among many energy ‘niches’, solar energy appears to be one of the most promising and reliable for the African continent because of the constant availability of sun light. Organic conjugated polymers have been identified as suitable materials to ensure proper design and fabrication of flexible, easy to process and cost-effective solar cells. Their tendency to exhibit good semiconducting properties and their capability to absorb photons from the sunlight and convert it into electrical energy are important features that justify their use in organic photovoltaic cells. Many different polymers have been investigated as either electron donating or electron accepting materials. Among them, poly(3-hexylthiophene) is one of the best electron donor materials that have been used in organic photovoltaic cells. It is a good light absorber and its Highest Occupied Molecular Orbital (HOMO) energy level is suitable to allow electron transfer into an appropriate electron acceptor. On the other hand, the molecular ordering found in dendrimers attracted some interest in the field of photovoltaics as this feature can ensure a constant flow of charges. In this work, I hereby report for the first time, the chemical synthesis of a highly crystalline dendritic star copolymer generation 1 poly(propylene thiophenoimine)-co-poly(3-hexylthiophene) (G1PPT-co-P3HT) with high molecular weight and investigate its application as donating material in bulk heterojunction organic photovoltaics.

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38

Li, Li. "Adhesion and cure kinetics of photopolymers." Thesis, Connect to Dissertations & Theses @ Tufts University, 1999. http://catalog.hathitrust.org/api/volumes/oclc/48224834.html.

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Thesis (Ph.D.)--Tufts University, 1999.
Submitted to the Dept. of Mechanical Engineering. Includes bibliographical references (leaves 110-113). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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39

Mukherjee, Indraneil Wei Yen. "Mesoporous materials for dental and biotechnological applications, curcumin polymers and enzymatic saccharification of biomass /." Philadelphia, Pa. : Drexel University, 2009. http://hdl.handle.net/1860/3130.

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40

Elsen, Andrea M. "“One-Pot” Oligomeric A2 + B3 Approach to Branched Poly(arylene ether sulfone)s: Reactivity Ratio Controlled Polycondensation." Wright State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=wright1279291050.

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41

Eghtesadi, Seyed Ali. "SUPRAMOLECULAR ASSEMBLY OF DENDRITIC POLYIONS INTORESPONSIVE NANOSTRUCTURES." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1522527868518926.

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42

Ye, Lin Holder Andrew J. "Application of quantum mechanical QSAR to dental molecule design." Diss., UMK access, 2007.

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Thesis (Ph. D.)--Dept. of Chemistry and School of Pharmacy. University of Missouri--Kansas City, 2007.
"A dissertation in chemistry and pharmaceutical science." Advisor: Andrew J. Holder. Typescript. Vita. Description based on contents viewed Apr. 15, 2008; title from "catalog record" of the print edition. Includes bibliographical references (leaves 89-93). Online version of the print edition.

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43

Thomsen, Elizabeth Alice. "Characterisation of materials for organic photovoltaics." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/462.

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44

Polińska, Patrycja. "Some thermodynamic, conformational and rheological properties of linear and hyperbranched polymer melts revisited." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE008/document.

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Ce travail était centré sur les propriétés thermodynamiques et mécaniques des polymères denses et sur leurs liens avec les systèmes de la matière molle et l'étude des propriétés de conformation et les propriétés rhéologiques des polymères hyperbranchés. L'étude de polymères hyperbranchés montre qu'ils sont substantiellement différents de leurs analogues linéaires. En utilisant des méthodes de simulation, nous pouvons obtenir des informations inaccessibles par des méthodes expérimentales et heureusement obtenir de précieuses informations du point de vue industriel et scientifique. Cette étude traite le problème par des simulations et comme expliqué dans le manuscrit, nous avons observé un centre de faible densité pour un grand nombre de générations et une enveloppe extérieure plutôt compacte. Cette tendance se retrouve également pour les propriétés dynamiques. Le manque d’enchevêtrement dans les polymères hyperbranchés fait d'eux des matériaux moins résistant que ceux composés de chaînes linéraires. La viscosité perd sa simple dépendance à la masse dans le cas d'une chaîne linéaire
This study is focused on thermodynamic and mechanical properties of dense polymers solutions and related soft matter systems and conformational and rheological properties of hyperbranched polymers. Studies of hyperbranched polymers shows that they are substantially different from their linear analogs. By using simulation methods we could reach the information not available by experimental methods and hopefully obtain valuable information from both industrial and scientific points of view.This study is treating this problem by means of computer simulations where as a result we can see a hollow center for high generation numbers and a rather compact outer shell. This tendency expands to dynamical behavior. Lack of chain entanglements in hyperbranched polymers make them not very tough materials in a comparison with linear chains. Another point is a decrease of mobility caused by large amount of branch points. Viscosity loses its simple dependence on the mass as for the case of linear chains

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45

Noël, Raymond. "Etude et développement de substrats microporeux pour l'adsorption du radon et son application en physique du neutrino." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4081.

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Le neutrino est l'une des douze particules élémentaires du modèle standard. Il se caractérise par une charge électrique nulle et une masse extrêmement petite. De nombreuses expériences ont été conçues afin d'étudier les propriétés des neutrinos. Malgré les avancées effectuées jusqu'à présent, la nature du neutrino est, encore aujourd'hui, inconnue. La collaboration NEMO (Neutrino Ettore Majorana Observatory) étudie la double désintégration bêta sans émission de neutrino, phénomène radioactif très rare, afin de découvrir la nature du neutrino et de déterminer s'il est, ou non, identique à son antiparticule. Aujourd'hui, la collaboration NEMO construit un nouveau détecteur baptisé SuperNEMO. Le gaz présent dans le détecteur requiert une concentration en radon inférieur à 100 µBq/m3, afin de minimiser le bruit de fond radioactif. La purification du gaz est réalisée grâce l'adsorption du radon par des matériaux microporeux. Dans ce travail, nous avons développé au CPPM (Centre de Physique des Particules de Marseille) un banc de mesures pour quantifier l'adsorption du radon par divers matériaux, afin d'en tirer un modèle, et atteindre les conditions de pureté requise pour SuperNEMO. En parallèle avec l'étude d'adsorbants disponibles, et de manière à mieux explorer la problématique de l'adsorption du radon, nous avons synthétisé et étudié au CINaM (Centre Interdisciplinaire de Nanoscience de Marseille) des composés polyaromatiques hydrocarbonés étoilés et des polymères aromatiques branchés ou dendritiques, incorporant du soufre, pour adsorber le radon
The neutrino is one of the twelve elementary particles from the standard model. It is characterize by a neutral electrical charge and an extremely low mass. Many experiments have been set up in order to study the properties of neutrino. Despite scientific breakthrough, the nature of this particle is still unknown up to now. The NEMO collaboration is studying the neutrinoless double beta decay, a very rare radioactive process, to find out the nature of neutrino and to know if the neutrino is equivalent to the antineutrino. Today, the NEMO collaboration is building a new detector called SuperNEMO. The gas inside the detector need to have a concentration in radon below 100 µBq/m3, to minimize the radioactive background. The purification of this gas is achieved from the adsorption of radon by microporous material. In this work, we have developed in CPPM a bench test to measure the radon adsorption by various materials, in order to propose an adsorption model, and to reach the purity condition needed for SuperNEMO. Along with the study on adsorbents available and to better understand the radon adsorption, we synthetized and studied at CINaM star-shape polyaromatic hydrocarbons and branched or dendritic aromatic polymers, incorporating sulfur, to adsorb radon

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46

Park, June Hyoung. "Charge transport in organic multi-layer devices under electric and optical fields." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1182273300.

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47

Östmark, Emma. "Tuning Properties of Surfaces and Nanoscopic Objects using Dendronization and Controlled Polymerizations." Doctoral thesis, KTH, Fiber- och polymerteknik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4550.

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In this study, dendronization and grafting via controlled polymerization techniques, atom transfer radical polymerization (ATRP) and ring-opening polymerization (ROP), have been explored. Modification of surfaces and cellulose using these techniques, which enable grafting of well-defined polymer architectures, has been investigated. The interest in using cellulose stems from its renewability, biocompatibility, high molecular weight, and versatile functionalization possibilities. Dendronization was performed using disulfide-cored didendrons of 2,2-bis(methylol)propionic acid (bis-MPA) on gold surfaces, for the formation of self-assembled monolayers. It was found that the height of the monolayer increased with increasing dendron generation and that the end-group functionality controlled the wettability of the modified surface. Superhydrophobic cellulose surfaces could be obtained when a ‘graft-on-graft’ architecture was obtained using ATRP from filter paper after subsequent post-functionalized using a perfluorinated compound. The low wettability could be explained by a combination of a high surface roughness and the chemical composition. Biobased dendronized polymers were synthesized through the ‘attach to’ route employing dendronization of soluble cellulose, in the form of hydroxypropyl cellulose (HPC). The dendronized polymers were studied as nanosized objects using atomic force microscopy (AFM) and it was found that the dendron end-group functionality had a large effect on the molecular conformation on surfaces of spun cast molecules. ATRP of vinyl monomers was conducted from an initiator-functionalized HPC and an initiator-functionalized first generation dendron, which was attached to HPC. The produced comb polymers showed high molecular weight and their sizes could be estimated via AFM of spun cast molecules on mica and from dynamic light scattering in solution, to around 100-200 nm. The comb polymers formed isoporous membranes, exhibiting pores of a few micrometers, when drop cast from a volatile solvent in a humid environment. HPC was also used to initiate ROP of ε-caprolactone, which was chain extended using ATRP to achieve amphiphilic comb block copolymers. These polymers could be suspended in water, cross-linked and were able to solubilize a hydrophobic compound.
QC 20100826

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48

Boisselier, Mailfait Élodie. "Synthèse et optimisation de dendrimères et de nanoparticules d'or en vue d'applications biomédicales." Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR14992/document.

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Plusieurs substrats issus de la chimie organique, inorganique et organométallique ont été synthétisés et fonctionnalisés avec différents groupes chimiques, notamment des polyethylene glycol qui leur permet d’améliorer leur solubilité dans l’eau et de les rendre biocompatible pour une éventuelle application dans le milieu biomédical. Ces substrats sont des dendrimères synthétisés sur plusieurs générations, des polymères obtenus soit par polymérisation d’un dendron soit par dendronisation d’un polymère, ou encore des nanoparticules d’or qui peuvent être stabilisées par des ligands thiolates ou bien par des dendrimères de manière intra- ou inter-dendritique. Ces nano-objets ont été designés dans l’objectif d’encapsuler, de stabiliser ou d’améliorer différentes molécules biologiques telles que des vitamines (vitamine C, B3 et B6), des neurotransmetteurs (acétylcholine et dopamine) ou des agents anti-cancéreux (daunorubicine)
Several substrates resulting from the organic, inorganic and organometallic chemistry were synthesized and functionalized with various chemical groups, including polyethylene glycol which enables them to improve their water solubility and to make them biocompatible for a possible application in the biomedical field. These substrates are dendrimers synthesized for several generations, polymers obtained either by polymerization of a dendron or by dendronization of a polymer, or gold nanoparticules which can be stabilized by thiolate ligands or by dendrimers in an intra- or inter-dendritic way. These nano-objects were designed with the aim of encapsulating, stabilizing or improving various biological molecules such as vitamins (vitamin C, B3 and B6), neurotransmitters (acetylcholine and dopamine) or anti-cancerous agents (daunorubicine)

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49

Krishnan, Vinu. "Design and Synthesis of Nanoparticle “PAINT-BRUSH” Like Multi-Hydroxyl Capped Poly(Ethylene Glycol) Conjugates for Cancer Nanotherapy." Akron, OH : University of Akron, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1217677351.

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Thesis (M.S.)--University of Akron, Dept. of Biomedical Engineering, 2008.
"August, 2008." Title from electronic thesis title page (viewed 12/9/2009) Advisor, Stephanie T. Lopina; Committee members, Amy Milsted, Daniel B. Sheffer, Daniel Ely; Department Chair, Daniel B. Sheffer; Dean of the College, George K. Haritos; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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50

Sivanandan, Kulandaivelu S. "Comprehending structural properties of dendrimers using new synthetic strategies." 2007. https://scholarworks.umass.edu/dissertations/AAI3302230.

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Three different synthetic approaches for constructing multi-functional dendrimers were described. Using one of the synthetic approaches, dendrimers containing a single photoactive unit at different layers were constructed. The accessibility of these layers for an external molecule was then studied using photo induced electron transfer process (PIET). Similarly, facially amphiphilic dendrimers containing single acetylene functionality at different layers was also synthesized using one of the synthetic approaches. Ferrocene was incorporated in these dendrimers using Huisgen cycloaddition reaction between the dendritic acetylene and azidomethyl ferrocene. Use of electrochemical experiments to measure the accessibility of these layers is suggested. These synthetic strategies will have implications in the area of drug delivery and catalysis.

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