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Dissertations / Theses on the topic 'Alternating copolymer'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Lazzara, Thomas Dominic. "Self-assembled styrene based alternating copolymer nanotubes : modeling and experiment." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112531.

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The structure and association behaviour of poly(styrene-alt-maleic anhydride) (SMA) and poly(styrene-alt-N,N-dimethylpropylamide) (SMI) polymers were studied using molecular modeling. The conformational studies were carried out at a semi-empirical PM3 level. SMA and SMI polymers were found to associate into nanotubes. These nanotubes have primary, secondary and tertiary structures. The primary structure is the conformation the polymer takes depending on the degree of protonation and its chirality. The secondary structure is the association of many polymers to form a nanotube structure. The ter

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2

Hadasha, Waled Ajili. "Alternating hetero-arm copolymer molecular brushes as scaffolds for inorganic nano-wires." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79841.

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Thesis (PhD)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: This study describes the synthesis and self-assembly of hetero-arm molecular brushes (hetero-arm MBs). These MBs consist of two polymeric side chains (SCs) of different natures, alternatingly distributed along the main chain (backbone). Two different types of hetero-arm MBs were prepared: first, alternating amphiphlic hetero-arm MBs (AMBs), and second, alternating hetero-arm MBs (AHMBs). Hetero-arm AMBs were synthesized via two strategies: (I) via a combination of “grafting through” and “grafting onto”, and (II) via “grafting th

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3

Kametani, Yuki. "Strategic Monomer Design for Alternating Copolymers and Sequence-Specific Properties." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263687.

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4

Malardier-Jugroot, Cécile. "Novel self-assembly of an alternating copolymer into nanotubes : theoretical investigation and experimental characterisation." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85085.

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This thesis is aimed at understanding and fully characterising the association mechanism of an alternating copolymer in water and the effect of the association in solution on the conformation of the polymer chains at the air/water interface.<br>Self-assembly is an elegant and efficient method to obtain well defined and usually defect-free nano-architectures. The association, variety of shapes and properties of block copolymers have been extensively studied. The present study led to a precise understanding of the complex behaviour of large molecules. The polymer studied is an alternating

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5

Nishimori, Kana. "Molecular Design for Precise Sequence Control and Functions of Alternating Copolymers." Doctoral thesis, Kyoto University, 2020. http://hdl.handle.net/2433/253306.

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京都大学<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第22470号<br>工博第4731号<br>新制||工||1739(附属図書館)<br>京都大学大学院工学研究科高分子化学専攻<br>(主査)教授大内誠, 教授秋吉一成, 教授竹中幹人<br>学位規則第4条第1項該当<br>Doctor of Philosophy (Engineering)<br>Kyoto University<br>DGAM

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6

WU, DAN. "LIQUID-CORE CAPSULES VIA INTERFACIAL POLYMERIZATION AND ALTERNATING COPOLYMERIZATION." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1179427662.

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7

Lea, Santa Cinzia Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "An investigation into the synthesis of poly(co-maleic anhydride/iso-butyl vinyl ether)with RAFT polymerisation." Awarded by:University of New South Wales. Chemical Sciences and Engineering, 2006. http://handle.unsw.edu.au/1959.4/31435.

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Poly (co iso-butyl vinyl ether-alt-maleic anhydride), an alternating copolymer, was synthesised. For this class of copolymers the formation of an electron-donor complex is invoked to explain their microstructure in which the two comonomers strictly alternate. Due to its polarity, this copolymer constitutes a potential additive for imparting hydrophilic properties to a hydrophobic matrix. In order to obtain narrow molecular weight polymers and study the relation between the molecular weight of this additive and its ability to migrate to the host polymer surface, chain transfer agents were intro

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8

Polk, William David. "Polydimethylsiloxane Containing Block Copolymers: Synthesis and Characterization of Alternating Poly(Arylene Ether Phosphine Oxide)-B-Siloxane and Segmented Nylon 6,6 -B-Siloxane Copolymers." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/29968.

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Two novel classes of siloxane containing, organic-inorganic block copolymers were prepared using different synthetic approaches. The first copolymers were alternating poly(arylene ether phosphine oxide)-poly(dimethylsiloxane) systems, prepared via oligomeric silylamine-hydroxyl reactions. Secondly, segmented nylon 6,6-poly(dimethylsiloxane) block copolymers were synthesized via a non-aqueous adaptation of the "nylon 6,6 salt" hydrolytic polyamidization, using bis(aminopropyl) dimethylsiloxane oligomer as a co-reactant. Three series of "perfectly" alternating block copolymers were produced fro

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9

Mao, Min. "Synthesis and Characterization of Highly Functional Substituted Stilbene Copolymers and Semi-crystalline Poly(aryl ether sulfone)s." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29028.

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Novel, highly functional rod-like copolymers have been synthesized by alternating copolymerization of N, N, Nâ , Nâ -tetraalkyl-4, 4â -diaminostilbenes (TDAS) with maleic anhydride. Dynamic light scattering, 2H solid state NMR and persistence length measurement reveal high chain rigidity of the polymer backbone. Double quantum heteronuclear local field solid state NMR spectroscopy (2Q-HLF Solid State NMR) has been employed to investigate the chain structure of 13C labelled copolymer. The torsional angle of the H-13C-13C-H part of the anhydride ring was zero degrees, indicating an all cis co

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10

Zhou, Xu. "Synthesis and Characterization of Nanoporous Copolymers with Potential Gas Storage Applications." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51669.

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Nanoporous organic polymers, including hypercrosslinked polymers (HCPs), covalent organic frameworks (COFs), polymers of intrinsic microporosity (PIMs), and conjugated microporous polymers (CMPs) etc., are considered good candidates for potential gas storage and gas separation applications. Porosities and surface areas of a series of semirigid alternating copolymers, which contained tert-butyl carboxylate-functionalized stilbene or tert-butyl carboxylate-functionalized styrene, and maleic anhydride or tert-butyl carboxylate-functionalized phenyl maleimide, were investigated using nitrogen sor

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11

Al-Samak, Basma. "Alternating ring-opened metathesis copolymers." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343280.

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12

Medlej, Hussein. "Copolymères à blocs « rigide-rigide » pour les cellules photovoltaïques organiques." Thesis, Pau, 2011. http://www.theses.fr/2011PAUU3027/document.

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Les performances des cellules photovoltaïques organiques de type hétérojonction en volume sont entre autres influencées par les propriétés opto-électroniques du polymère semiconducteur donneur d’électrons. L’objectif de cette thèse était de développer de nouveaux polymères π-conjugués pour permettre une meilleure exploitation du spectre solaire et donc améliorer la photogénération des charges. Pour cela, plusieurs dérivés de polythiophènes comportant des substituants aromatiques phényles ont été synthétisés par la méthode de GRIM, à noter l’homopolymère poly[(3-(4-hexylphényl) thiophène] (P3HP

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13

Anton, Peter, and André Laschewsky. "Polysoaps via alternating olefin/SO2 copolymers." Universität Potsdam, 1991. http://opus.kobv.de/ubp/volltexte/2008/1721/.

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Contents: Introduction Results and discussion - Monomers studied - Monomer properties - Polymerization, copolymer composition and general properties - Polymer properties in aqueous solution Conclusion Experimental part - Materials - Copolymerization with S02 (typical procedure) - Methods

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14

Christie, David W. "Alternating copolymers containing side-chain liquid crystal groups." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311158.

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The copolymerisation of N-ethyl maleimide (NEM) with ethyl vinyl ether (EVE) in benzene (Bz) was investigated. The copolymerisation displays a tendency towards alternation but is not alternating and propagation involves the formation of a 1:1 NEM/EVE charge-transfer complex. This complex and the monomer/solvent complexes were investigated by <sup>1</sup>H NMR spectroscopic methods. The equilibria were combined mathematically to model the NEM/EVE/Bz system. The copolymerisations of functionalised N-substituted maleimides, N-4-[6-(4'-methoxy-4-azobenzoxy) hexoxycarbonyl] phenylmaleimide (NMeAz6P

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15

Khansawai, Paveena. "Chemical modification of alkene-carbon monoxide alternating copolymers." Thesis, University of Edinburgh, 2000. http://hdl.handle.net/1842/12362.

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Reactions of isolated carbonyl groups in ethene/propene-carbon monoxide alternating copolymers were accomplished by acid-catalysed condensation with alkene-1,2-diols (ethane-, propane-, butane- and hexane-1,2-diols) affording alkene-dioxolane copolymers. Oximation with hydroxylamine, <i>O</i>- methylhydroxylamine and <i>O</i>-benzylhydroxylamine resulted in complete conversion of the carbonyl groups to their oxime derivatives. In addition, the conversions of polyketoximes, derived from ethene/propene-carbon monoxide copolymers, to 1-acteoxyiminotrimethylene and 1-benzoxyimino-trimethylene poly

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16

Smith, Susan Abenes. "Synthesis and characterization of perfectly alternating segmented copolymers comprised of poly(dimethylsiloxane)s and engineering thermoplastics." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03022010-020156/.

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17

Ahmed, Shafique. "Thermal degradation studies of alternating copolymers and their related homopolymers." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296043.

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18

Bronk, John M. "Synthesis, characterization and properties of epoxide containing block and alternating copolymers." Diss., This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-10032007-171915/.

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19

Brower, Kevin P. (Kevin Peter). "Development of alternating amphiphilic copolymers for targeted delivery applications in cancer." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/62731.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>According to the American Cancer Society, approximately 1,479,000 new cases of cancer were expected to be diagnosed, while 562,340 Americans were expected to die from cancer in 2009 alone. Even though advances in early diagnosis and therapy over the past few decades have led to continual decreases in incidence and mortality, cancer remains the second leading cause of death among all Americans. Consequently, further tech

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20

Li, Yi. "Sterically Crowded Copolymers Based on Functionalized Stilbenes." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77308.

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The research in this dissertation is focused on the synthesis and characterization of sterically crowded, precisely charged polyelectrolytes based on substituted stilbene comonomers. New sterically crowded polyelectrolytes based on functionalized stilbenes with maleic anhydride or functionalized N-phenylmaleimides were prepared via a "protected" precursor polymer strategy. The polyelectrolyte precursors readily dissolved in organic solvents and were characterized by 1H NMR, SEC, TGA, and DSC. The polyelectrolytes were obtained via simple deprotection chemistries. The use of different combinati

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21

Savage, Alice. "Synthesis and Solution Properties of Semi-rigid Polyelectrolytes and Polyampholytes." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/50820.

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The incorporation of substituted stilbenes in copolymers affects the resulting solution properties and their controlled radical polymerizations. Substituted stilbene monomers readily polymerize in an alternating fashion with acceptor comonomers such as maleic anhydride and maleimide. These sterically crowded polymer backbones are classified as semi-rigid. As this is an uncommon category of polymer backbone rigidity, examples of semi-rigid and rigid polyzwitterions in the literature were reviewed as well as stilbene-containing semi-rigid polymers. Using a deprotection strategy, anionic polyelec

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22

Huang, Jing. "Functional Polymers Containing Semi-Rigid Alternating Sequences." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/89884.

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Alternating copolymers represent a special class of copolymers in which the two comonomers copolymerize in a regular alternating sequence along the polymer chain. Of particular interest in our group are the stilbene-maleic anhydride/maleimide alternating copolymers. These copolymers possess sterically congested backbones and precisely placed functional groups arising from the strictly alternating copolymerization. The research in this dissertation is focused on the synthesis, characterization, and potential application of functionalized copolymers that contain semi-rigid alternating copolymer

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23

Schubert, Marcel. "Elementary processes in layers of electron transporting Donor-acceptor copolymers : investigation of charge transport and application to organic solar cells." Phd thesis, Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7079/.

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Donor-acceptor (D-A) copolymers have revolutionized the field of organic electronics over the last decade. Comprised of a electron rich and an electron deficient molecular unit, these copolymers facilitate the systematic modification of the material's optoelectronic properties. The ability to tune the optical band gap and to optimize the molecular frontier orbitals as well as the manifold of structural sites that enable chemical modifications has created a tremendous variety of copolymer structures. Today, these materials reach or even exceed the performance of amorphous inorganic semiconducto

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24

Li, Siyuan. "INTERFACIAL PHENOMENA IN COPOLYMER MEMBRANES SWOLLEN BY SURFACTANTS AND MICROWAVE SYNTHESIS OF METAL OXIDE-CARBONS." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1618249966415808.

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25

Lessard, Benoît. "Advances in Nitroxide-mediated controlled radical polymerization from Poly(Methacrylate)s to perfectly alternating copolymers." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110396.

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Nitroxide mediated controlled radical polymerization (NMP) has been utilized since the early 1990s, as a simple and robust technique for the synthesis of various new polymeric architectures. Since the development of second generation initiators based on SG1 and TIPNO stable radicals, NMP is no longer restricted to the polymerization of just styrenics as it was initially and can now homopolymerize a plethoraof monomers such as acrylates and acrylamides. In this thesis, several advances in NMP due to these second generation initiators, were explored. The homopolymerization of methacrylates, by N

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26

Singh, Gurpreet. "Dynamic Thermal Field-Induced Directed Self-Assembly of Block Copolymer Thin Films." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1372120753.

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27

Miller, Michelle Teresa. "In vitro evaluation of cytotoxicity and cellular uptake of alternating copolymers for use as drug delivery vehicles." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51673.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2009.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references.<br>Cancer is the collective group of diseases distinguished by uninhibited growth and spread of abnormal cells. It often results in death if the spread is not controlled. Most cancers are treated by surgery, radiation, chemotherapy, hormones, or immunotherapy. However, currently there are many issues with these form

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28

Studnicki, Lisa Helen [Verfasser], Elisabeth [Gutachter] Klemm та Oskar [Gutachter] Nuyken. "Synthesis of new alternating block copolymers with tailored π-conjugated blocks and non-conjugated aliphatic spacers / Lisa Helen Studnicki ; Gutachter: Elisabeth Klemm, Oskar Nuyken". Jena : Friedrich-Schiller-Universität Jena, 2007. http://d-nb.info/1205740864/34.

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29

Legros, Mathilde. "Synthèse et caractérisation de nouveaux polythiophènes porteurs de groupes C60 pour une application solaire photovoltaïque organique." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00664997.

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L'efficacité des cellules photovoltaïques organiques est influencée par la morphologie du mélange composant la couche active. L'objectif de cette thèse a été d'élaborer un agent compatibilisant pour stabiliser la morphologie du mélange P3HT:PCBM. Nous avons choisi de synthétiser des copolymères alternant motifs C60 et polythiophène pour améliorer la miscibilité entre P3HT et PCBM. Les copolymères ont été réalisés par polycondensation d'un dérivé C60 avec plusieurs oligothiophènes régioréguliers de difonctionnalité contrôlée. Une attention particulière a été accordée aux conditions de polyconde

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30

Rosenthal-Kim, Emily Quinn. "Green Polymer Chemistry: Synthesis of Poly(disulfide) Polymers and Networks." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1386525065.

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31

Hung, Chi-Hang, and 洪啟航. "The Research of Photoelectric in Alternating Thiophene Copolymer and Nanocomposites." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/yfycb9.

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碩士<br>國立臺北科技大學<br>有機高分子研究所<br>99<br>Conjugate polymers are organic polymers that conduct electricity. Such compounds may have metallic conductivity or can be semiconductors. The biggest advantage of conductive polymers is their processability, mainly by dispersion. Polythiophene is a very important material that is used in polymer solar cell. The thermal stability is very important for solar cell during the irradiation of the sun. Therefore, a new type of polythiophene is synthesized. The copolymer manifest better stability than the unmodified polythiophene. In this experiment, polythiophe

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32

Chen, Pin-Ying, and 陳品穎. "Alternating Copolymers Containing Bipyridine and Phenylenevinylene for Chemosensor Applications." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/94917358412194636283.

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碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>102<br>The organic conjugated polymer has been rapidly developed in the past decade, and the application of conjugated polymer to the chemosensor has attracted considerable attention. Fluorescence conjugated polymer chemosensors for metal ions sensing which containing bipyridine units and phenylenevinylene moieties were prepared in this thesis. Nitrogen-based ligands such as 2-2’-bipyridine can effectively coordinate a variety of metal ions. The polymer conformation changed due to the coordination with metal ions, and the optical properties present something diffe

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33

Shih, Tsung-yu, and 施宗佑. "Alternating copolymers containing fluorene and oxadiazole derivatives for chemosensor applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/46067640974960781026.

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碩士<br>國立臺灣科技大學<br>材料科學與工程系<br>100<br>The novel alternating copolymers, poly(9,9-dioctylfluorene) with pendant 2-pyridyl- and 2-pyrimidyl-1,3,4-oxadiazole, were synthesized through palladium-catalyzed Suzuki coupling reaction. The thermal, optical and electrochemical properties of these polymers are substantially affected by the heteroaryl substituted oxadiazole groups in the side chain. In addition, it is interesting to note that the significant bathochromic effect was found which results in different absorption spectra in both solution and solid states. The fluorescence quenching ratios were

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34

Chen, Wen-Hao, and 陳文豪. "Folding of Alternating Dialkylsilylene-Spaced Donor-Acceptor Copolymers: The Oligomer Approach." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/81403560185755986690.

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碩士<br>國立臺灣大學<br>化學研究所<br>100<br>A series of oligomers with donor and acceptor moieties divided by different dialkylsilylene spacers (Me2Si- vs iPr2Si-) have been designed and synthesized to inspect the folding behavior of the corresponding copolymers by investigating their photophysical properties. 4-Aminostyrene moiety was chosen as the donor and stilbene moiety was selected as the acceptor. Sequential Rh-catalyzed hydrosilylation of terminal alkyne with silylhydride afforded these oligomers. Terminal alkynes were prepared by Sonogashira reaction. Silylhydrides were introduced by lithiati

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35

Yeh, Cheng Yang, and 葉政洋. "Synthesis and Optoelectronic Properties of Alternative Copolymer Poly(3-hexylthiophene)-alt-Polythiophene and Random Copolymer Poly(3-hexylthiophene)-ram-Polythiophene." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/31240488834769161796.

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碩士<br>國立中正大學<br>化學工程研究所<br>99<br>We synthesize the alternative copolymer P3HT-alt-PT by Suzuki coupling reaction and random copolymer P3HT-ram-PT by Modified Grignard Metathesis(GRIM), comparing the advantages and the disadvantage of these two polymers, and finally we use some equipment to identify their characterization. LC/MS, 1H-NMR and FTIR can show the structure; TGA can show the temperature of decompose Td; DSC can show the glass transition temperature Tg and the melting point Tm; UV-Vis can show the absorption wavelength range of the visible light; PL can show the wavelength range of th

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Liao, Wei-Chih, and 廖偉智. "The Role of Oligomethylene Linkage on the Photophysics of Alternating Dialkylsilylene-Spaced Donor-Acceptor Copolymers." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/54247370326454421912.

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碩士<br>國立臺灣大學<br>化學研究所<br>100<br>Alternating dialkylsilylene-spaced donor-acceptor copolymers with two substituents (methyl vs isopropyl) on silicon and different oligomethylene linkages, piperazinyl, ethylene, tetramethylene, and 2,2-dimethylpropylene, have been designed and synthesized by Rh-catalyzed hydrosilylations. The donors were selected to be the oligomethylene-connecting bis-aminostyrene moieties, and the acceptors were chosen as the stilbene chromophores with dialkylsilyl substituents at both ends. Thorpe-Ingold effect is introduced by changing the size of the substituents (methyl v

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Su, Fu-Kun, and 蘇富琨. "Restraining Associations of Fluorene-Based Fluorescent Alternative and Block Copolymers by Crosslinked Network." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/r2xxrz.

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博士<br>國立中山大學<br>材料科學研究所<br>95<br>Polyfluorene (PF) and its derivates as well-known fluorescent materials are promising materials in optoelectronic applications due to their high quantum yields in the solid state. Nevertheless, the easy chain inter-action in PFs to result in the unfavorable associations (aggregate and excimer) are generally considered to be detrimental to the emission efficiency in the concentrated solid state and/or at high temperatures. In the study, restraining the extent of associations is therefore by embedding fluorene-based alternative and block copolymers in crosslinked

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Yang, Po-Chih, and 楊博智. "Side Chain Effects on the Optoelectronic Properties and Self Assembly Behaviors of Donor-Acceptor Alternating Conducting Copolymers." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/19076894618680046882.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>104<br>Donor-acceptor alternating conducting copolymers are potential materials for low cost flexible electronics such as transistors, solar cells, etc. These kinds of polymers are usually rigid and difficult to process. Through side chain engineering, we can not only tune the conformation but also optical bandgap and self assembly behavior of the copolymers. From Stille coupling reactions, we synthesized four series of donor-acceptor alternating conducting copolymers. They are basis on donor of terthiophene (3T) and acceptor of thieno[3,4-c]pyrrole-4,6-dione (TP

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39

Kao, Kun-chi, and 高錕琪. "Synthesis and Photovoltaic Properties of Donor-Acceptor Alternating Conjugated Copolymers Based on Different Acceptor Units and Fluorinated Benzothiadiazole." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/60819794534463714289.

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碩士<br>國立高雄大學<br>化學工程及材料工程學系碩士班<br>102<br>We have sucessfully synthesized two donor-acceptor alternating conjugated polymers P1 and P2 containing benzodithiophene and benzothiadiazole derivatives as the donor and acceptor units, respectively, for the donor materials of the active layer by Stille coupling reaction. Our study was divided into three parts. The first part was to synthesize the donor materials of both types: P1 and P2. Subsequently, all synthesized optoelectronic materials were confirmed with FT-IR and NMR analyses. Molecular weights and polydispersity indices (PDI) were obtained

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40

Alnady, Mohamed Maged Saad Abdelati. "Excited State Characterization of Oligoand Polythiophene Derivatives: Tetraphenylethene-Substituted Thiophenes, Aryl-Bithiophenes and Alternating Donor-Acceptor Indigo- Cyclopentadithiophene Copolymers." Master's thesis, 2016. http://hdl.handle.net/10316/32268.

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Dissertação de Mestrado em Química apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>A comprehensive investigation of the excited state properties of polythiophenes and aryl-bithiophenes has been undertaken in solution at different temperatures. The investigated polythiophenes include the tetraphenylethene-substituted -thiophene (HomoPT) and -bithiophene building blocks (coPT). In addition, and for comparison purposes, the parent poly(3-hexylthiophene), P3HT, together with the monomeric percursor tetraphenylethene-thiophene and the bromide-substituted tetrap

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Sun, Hsiang-Yao, and 孫祥耀. "Synthesis and Properties of Alternating and Random Copolymers Using Triphenylamine and Its Derivative with Diketopyrrolopyrrole for Organic Solar Cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/94842397708833119025.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>101<br>In order to obtain conjugated polymers of low energy band gap we formed the conjugated main chain structure of the donor-acceptor alternately. Donor and acceptor successfully synthesized by a series of alternating copolymers and random copolymers via Suzuki coupling reaction and Stille coupling reaction. In this research, We used triphenylamine as donor because of its great hole transporting property and helical structure. Triphenylamine can increase open circuit voltage(Voc) for organic polymer solar cell. In addition, we mounted triphenyl silicon and carb

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Dzeng, Yi-Chung, and 曾益中. "Unusual Substituent-Dependent Photophysical Properties of Alternating Substituted Methylene-Diethynylbenzene Copolymers: a Comparison of Methylene versus Silylene Tethers on Polymer Folding." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/62693315107904455249.

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碩士<br>國立臺灣大學<br>化學研究所<br>103<br>Alternating tert-butyl- and methyl- substituted alkoxymethylene-diethynylbenzene copolymers 11 with different degree of polymerization and the corresponding dimers 15 were synthesized. The tert-butyl substituted polymers 11b show strong emissions around 350-400 due to ground state interactions between adjacent chromophores while copolymer 11a with less bulkily methyl-substituted tether exhibits emission around 400-450 nm due to through-space interactions between nonadjacent diethynylbenzene chromophores. Such substituent effect on photophysical properties was at

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Huang, Shang-Cyuan, and 黃上權. "Effect of Fluorination of Acceptor Units on the Photovoltaic Properties of Donor-Acceptor Alternating Conjugated Copolymers Based on Silicon-Containing Donor and Benzofurazan Acceptor Units." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/21718627445662864668.

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碩士<br>國立高雄大學<br>化學工程及材料工程學系碩士班<br>103<br>We have sucessfully synthesized two donor-acceptor alternating conjugated polymers P1 and P2 containing dithienosilole and benzofurazan derivatives as the donor and acceptor units, respectively, for the donor materials of the active layer by Stille coupling reaction. Both of them exhibited the intramolecular donor-acceptor characteristic and displayed a panchromatic absorption ranging from 300 to 1000 nm and P1 have an ideal bandgap of 1.41 eV, and P2 is 1.38 Ev. The structure of the polymers were confirmed by FT-IR, 1H NMR, and 13C NMR. Optoele

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Wang, Jen-Fu, and 王仁甫. "PART A: Theoretical Analysis on the Geometry and Electronic Properties of Acceptors-based Poly(heteroarylene methine)sPART B: Synthesis and Characterization of New Fluorene-based Donor-acceptor-Donor Alternating Copolymers for Transistor Applications." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/23582947253974714246.

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碩士<br>國立臺灣大學<br>高分子科學與工程學研究所<br>94<br>Abstract The electronic structures and electronic properties of conjugated polymers have been tuned by modifying the chemical structures in many studies for specific aims. In this study, we divide two parts to discuss: (A) theoretical analysis on the geometries and electronic properties of acceptors-based poly(heteroarylene methine)s, and (B) synthesis the fluorene-based copolymers with donor-acceptor-donor systems(1:1) and their application on the thin-film transistors. In the PART A of this study, a comprehensive understanding on the relationship bet

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Jen-Fu, Wang. "PART A: Theoretical Analysis on the Geometry and Electronic Properties of Acceptors-based Poly(heteroarylene methine)s PART B: Synthesis and Characterization of New Fluorene-based Donor-acceptor-Donor Alternating Copolymers for Transistor Applications." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2807200615182600.

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