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Tesi sul tema "Inclusion compounds"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 1 febbraio 2022

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1

Nikkhou, Aski Sahar. "NMR Studies of Inclusion Compounds." Doctoral thesis, Stockholm University, Department of Physical, Inorganic and Structural Chemistry, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8223.

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<p>This thesis presents the application of some of the NMR methods in studying host-guest complexes, mainly in solution. The general focus of the work is on investigating the reorientational dynamics of some small molecules that are bound inside cavities of larger moieties. In the current work, these moieties belong to two groups: cryptophanes and cyclodextrins. Depending on the structure of the cavities, properties of the guest molecules and the formed complexes vary. Chloroform and dichloromethane are in slow exchange between the cage-like cavity of the cryptophanes and the solvent, on the c

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2

Ramon, Gaëlle. "Inclusion compounds : macroproperties from structure." Lyon 1, 2005. http://www.theses.fr/2005LYO10267.

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Nous avons étudié des composés d'inclusion et résolu leurs structures. Nous avons étudié les propriétés physico-chimiques de dérivés de xanthenol en procédant à l'étude de la cinétique de désorption et à des expériences d'échanges de composés ‘guest'. Nous avons purifié un composé par recristallisation. Nous avons étudié un cas de polymorphisme et déterminé la sélectivité d'un composé ‘host' avec des solvants aromatiques. Enfin, nous avons fait l'inclusion de DMSO dans tous les composé ‘host' et relié leur stabilité thermique avec leur morphologie. Pour WEB22, nous avons étudié sa sélectivité

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3

Nash, Katherine Lindsay Gifford. "Inclusion compounds of multipedal hosts." Doctoral thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/26237.

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The inclusion properties of three multipedal host compounds have been investigated. The host compounds : hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)benzene (host 1), 1,2,3,5,6, 7-hexakis(3-hydroxy-3,3-diphenyl-2-propynyl)naphthalene (host 2), and tetra(3-hydroxy-3,3-diphenyl-2-propynyl)ethylene (host 3), are characterised by a planar electron-rich central region with bulky substituent groups attached to it. Each substituent contains a hydroxyl group capable of hydrogen bonding. These features enable the inclusion of small organic solvent molecules, with suitable functional groups, within the ho

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4

Smith, Kenneth Christopher. "Photochemistry of urea/ketone inclusion compounds." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq24919.pdf.

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5

Khan, Arjuman Ara. "Exchange reactions of urea inclusion compounds." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394381.

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6

Bourne, Susan Ann. "Inclusion properties of hydroxy host compounds." Doctoral thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/22504.

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Inclusion compounds can be defined as those in which one type of molecule is able to enclose another molecule (usually smaller) within its structure, leaving the bonding systems of both components unchanged. The molecular network and the enclosed species are usually referred to as the "host" and "guest" respectively. The ability of four hydroxyl-containing molecules to form inclusion compounds was studied. Each of these molecules has a tetrahedral carbon or silicon atom bonded to an hydroxyl group and shielded by two or three aromatic moieties. The bulkiness of these molecules prevents them fr

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7

Su, Hong. "Inclusion compounds : structure, reactivity and selectivity." Doctoral thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/9783.

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Includes bibliographical references.<br>This thesis is concerned with structure, thermodynamic and kinetic aspects of a variety of inclusion compounds which contain small organic guests. The host compounds studied are alkaline-earth metal salts of O,O’-dibenzoyl-(2R, 3R)-tartraric acid (magnesium, calcium and strontium), 1,1’-bis-(4-hydroxyphenyl)cyclohexane (DHPC) and 2,2’-dihydroxy-1,1’-binaphthyl (BINAP). The alkaline-earth metal salts form coordination complexes with 2-methoxyethanol, water or ethanol and the guests act as a part of the coordination sphere of the metal ions. The diol host

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8

Faleni, Nobathembu. "Inclusion behaviour of related organic host compounds." Thesis, Cape Peninsula University of Technology, 2007. http://hdl.handle.net/20.500.11838/739.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2007<br>The inclusion behaviour of the two host compounds, 9-(4-methoxyphenyl)-9Hxanthen- 9-o1 (A1)• and 9-(4-methylphenyl)-9H-xanthen-9-o1 (A10) were investigated. These host compounds are large, bulky, rigid and they contain functionalities that allow them to selectively interact with other molecules, such as the guests in this work. The host molecules form inclusion complexes with small organic guest molecules. The host•••guest interactions are the interesting focus of this study. The host A1 included the guests

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9

Tabner, Vivienne Amanda. "Spectroscopic studies of clathrates and inclusion compounds." Thesis, Lancaster University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280748.

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10

Nordon, Alison. "Solid-state NMR studies of inclusion compounds." Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4758/.

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The work contained within this thesis is a study of inclusion compounds using solid-state NMR. Such compounds typically exhibit static and/or dynamic disorder, which precludes the use of diffraction-based techniques to obtain detailed structural information. Hence, due to its ability to probe local environments, solid- state NMR can be used to provide information which would otherwise be inaccessible. However, the dynamic nature of the guest molecules within inclusion compounds can yield unusual results for routinely applied experiments, such as cross polarisation, heteronuclear dipolar decoup

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11

Coetzee, Anita. "Structure and reactivity of selected inclusion compounds." Doctoral thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/18110.

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Includes bibliographical references.<br>Selected inclusion compounds of hydroxy hosts from three different classes were investigated. The host compounds in class A are 2,7-substituted 2,2'-bis(9-hydroxy-9-fluorenyl)biphenyls, with the substituents being Cl, Br or tert-butyl. They readily form inclusion compounds with a wide variety of solvents. Their inclusion compounds with 1 ,4-dioxane, 1 ,3-dioxane, 1 ,3-dioxolane and acetone were investigated. The crystal structure of an unsolvated, α-phase, of the host compound 2,2'-bis(2,7-dichloro-9-hydroxy-9-fluorenyl)biphenyl was elucidated. The host

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12

Su, Hong. "Structure and decomposition of diol inclusion compounds." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/27009.

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The inclusion properties of the host, trans-9, 10-dihydroxy-9, 10-diphenyl-9,10- dihydroanthracene, with various guest molecules, namely cyclohexanone, 2- methylcyclohexanone, 3-methylcyclohexanone and 4-methylcyclohexanone, were investigated. The host to guest ratios were determined by programmed temperature thermogravimetry. Two of the four molecular structures were elucidated using single crystal X-ray diffraction. All the inclusion compounds were also characterised by differential scanning calorimetry, hotstage microscopy and Xray powder diffraction. The kinetics of decomposition of the in

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13

Schubert, Wolf-Dieter. "Structure and thermodynamics of Diol inclusion compounds." Master's thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/16007.

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Includes bibliographical references.<br>This work is predominantly concerned with the structural analysis of the coordinatoclathrates formed by the host compound trans-9,10-dihydroxy-9,10-diphenyl- 9,10-dihydroanthracene (1) with compounds containing neutral nitrogen atoms (Lewis bases). The structures of inclusion compounds with two nitriles (acetonitrile and 3- hydroxypropionitrile), with pyridine and with three substituted pyridines (3- methylpyridine, 2,4-dimethylpyridine and 2,6-dimethylpyridine) have been solved by single crystal X-ray diffraction methods. The crystal packing modes and h

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14

Clarke, Ronald James. "Kinetic and equilibrium studies of cyclodextrin-azo dye inclusion complexes /." Title page, contents and abstract only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phc5992.pdf.

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Thesis (Ph. D.)--University of Adelaide, Dept. of Physical and Inorganic Chemistry, 1985.<br>Offprints of two author's journal articles inserted at end of the v. Includes bibliographical references (leaves 10-12).

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15

Harris, Kenneth David Maclean. "Studies of urea inclusion compounds and other solids." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305478.

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16

Donnelly, Mary-Ellen. "Neutron diffraction of hydrogen inclusion compounds under pressure." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/31471.

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When ice is compressed alongside a gas, crystalline 'host - guest' inclusion compounds known as gas clathrate hydrates form. These compounds are of interest not only for their environmental and possible technological impact as gas storage and separation materials, but also for their ability to probe networks not readily adopted by the pure `host' water molecules, and to study the interactions between water and gas molecules. Despite the pressure dependent crystal structures being fully determined for a large variety of `guest' gas species there is still relatively little known about the crysta

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17

Odounga, Jean-Eudes Odounga. "Synthon formation in inclusion compounds of Phenylsuccinic acid." Thesis, Cape Peninsula University of Technology, 2019. http://hdl.handle.net/20.500.11838/2986.

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Thesis (MSc (Chemistry))--Cape Peninsula University of Technology, 2019<br>The effect of chirality was investigated on selected physico-chemical properties by designing, synthesizing and analysing a series of racemic multicomponent crystals and their chiral counterparts. Eleven new crystalline materials were synthesised by combining phenylsuccinic acid (racemate or the S-enantiomer), a dicarboxylic acid, with primary or aromatic amines (aniline, pyridine, 4-picoline, 2,4-lutidine, 3,4-lutidine and 3,5-lutidine) and a drug pyrazine carboxamide (PCA). The carboxylic acids were combined with the

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18

Jacobs, Ayesha. "Structure and reactivity of selected organic inclusion compounds." Doctoral thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/6313.

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Includes bibliographical references.<br>The inclusion behaviour of the two host compounds 1,1 ,6,6-tetraphenylhexa-2,4- diyne-l,6-diol and cyclotriveratrylene (2,3,7,8,12,13-hexamethoxy-5,lO-dihydro- 15H-tribenzo[ a,d,g]cyclononene) was studied. Small organic guests were complexed with these hosts and their crystal structures determined. The stability and reactivity of these inclusion compounds were investigated. Kinetics of desolvation were determined for some of the inclusion compounds using both isothermal and non-isothermal methods. Rate laws were proposed and activation energies establish

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19

Le, Roex Tanya. "The physio-chemical properties of organic inclusion compounds." Doctoral thesis, University of Cape Town, 2004. http://hdl.handle.net/11427/15435.

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Includes bibliographical references.<br>In this thesis the inclusion properties of the host compounds trans-9,10-dihydroxy-9,10-bis(p-tert-butylphenyl)-9, 10-dihydroanthracene (TBDDDA), 9.9'-(Biphenyl-4,4'diyl) difluoren-9-ol (WEB24) and 1â ´ ,1â ¶,5â ´,5â ¶-tetrahydroxy-2,4,6,8-tetrapentyl-3â ´,3â ¶,7â ´,7â ¶-tetra(p-toluenesulfonyl-oxy)-1,3,5, 7(1,3)-tetrabenzenacyclooctaphane (TTRSC) were investigated. Each of these host compounds is bulky and rigid and in addition contains high-affinity functional groups which can engage in specific host-guest interactions, such as hydrogen bonding.

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20

Scott, Janet Lesley. "Inclusion compounds of cholic acid and methyl cholate." Thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/25589.

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21

Meade, Thomas Joseph. "Inclusion complexes of molecular transition metal hosts /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262513406675.

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22

Chao, Mao-Hsun. "New insights into structural properties of incommensurate inclusion compounds." Thesis, University of Birmingham, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274597.

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23

Süss, Heike Ingrid. "Property directed inclusion formation by channel forming host compounds /." [S.l.] : [s.n.], 2004. http://www.zb.unibe.ch/download/eldiss/04suess_hi.pdf.

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24

Silwana, Nothemba. "Structure and thermal stability of selected organic inclusion compounds." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/2618.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2012.<br>Crystal engineering is the synthesis of new crystalline materials with specific chemical and physical properties which allows the comprehensive understanding of the non covalent interactions that occur between molecules in the crystalline state. This has lead to extensive work being done in terms of host design. The study of non-covalent interactions formed by - these materials is crucial to understanding many biological processes. This study focuses on the inclusion compounds of 1, 4-bis (diphenylhydroxymethyl)

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25

Shannon, Ian James. "Structural and chemical properties of solid organic inclusion compounds." Thesis, University of St Andrews, 1995. http://hdl.handle.net/10023/15459.

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Urea and thiourea form inclusion compounds in which organic and organometallic guest molecules are confined within non-intersecting, unidirectional tunnels within a solid urea or thiourea host structure. In this thesis, studies have been undertaken using a variety of techniques to examine the properties of urea and thiourea inclusion compounds, with a view to improving the understanding of the forces controlling the ordering of these systems on a molecular scale. From single crystal X-ray diffraction studies of urea inclusion compounds carried out at room temperature, different modes of orderi

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26

Johnson, Louise. "The inclusion behaviour of "wheel-and-axle" host compounds." Thesis, University of Cape Town, 1992. http://hdl.handle.net/11427/23257.

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The inclusion behaviour of three "wheel-and-axle" host molecules was investigated. By virtue of their shape and the way in which they pack these host molecules are able to entrap guest molecules into a host-guest array. The host compounds were: 1,1,6,6-tetraphenyl-hexa-2,4-diyne-1,6-diol (HOST1), 4,4'-bis(diphenylhydroxymethyl)biphenyl (WEB11 ), 4,4'-bis(diphenylmethyl)biphenyl (WEB10). The WEB 11 host compound was found not to include guest molecules. The crystal structures of the non-porous α-phases of these three host compounds and the inclusion compounds were elucidated using single crysta

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27

Janjic, Nikolina. "Structures and thermal stability of selected organic inclusion compounds." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/14968.

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Includes bibliographical references.<br>The crystal structures of 1,1 ,6,6-Tetraphenyl-hexa-2,4-diyne-1 ,6-diol and 5-(3,5- Dicarboxyphenylethynyl)-isophthalic acid hosts with various guests have been elucidated. Depending on their structural properties and the way in which the host components pack, the guests may become trapped in spaces or voids, stacked in channels or sandwiched between layers of hosts. The crystal structures are stabilised by hydrogen bonding networks created by host-guest intermolecular interactions. The host hydroxy moieties adopt a trans conformation in 1,1 ,6,6-Tetraph

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28

Wang, Bo. "Synchrotron studies of "self-compression" in urea inclusion compounds." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/35597.

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Doctor of Philosophy<br>Department of Chemistry<br>Mark D. Hollingsworth<br>Urea inclusion compounds (UICs) are classic examples of nanoporous, host:guest materials in which the linear channels of the honeycomb structure of the urea host can include various types of long-chain compounds (the guests). By using synchrotron X-ray radiation sources, a deeper understanding of these materials is made possible through detailed structural studies. In particular, this dissertation describes a series of structural phase transitions that occur upon cooling two related UICs containing alkanedione guest

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29

Brereton, Ian Malcolm. "A multinuclear NMR study of inclusion processes /." Title page, contents and introduction only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phb841.pdf.

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30

Morte, Rodenas Anabel. "Solid-state studies of inclusion compounds and other organic materials." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/55030/.

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This thesis comprises the results of research on various aspects of solid inclusion compounds and other organic materials. Chapter 1 is an introduction to solid-state inclusion compounds, in particular describing the main characteristics of urea inclusion compounds and thiourea inclusion compounds. The experimental techniques utilized during the research are described in Chapter 2. These techniques include X-ray diffraction techniques (single crystal X-ray diffraction, powder X-ray diffraction and the characteristics of synchrotron radiation) and thermal analysis techniques (differential scann

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31

Adams, Angela Dee. "Synthesis of guest molecules for studies of urea inclusion compounds." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/10724.

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Master of Science<br>Department of Chemistry<br>Mark D. Hollingsworth<br>Most urea inclusion compounds (UICs) are known to share a common packing arrangement in which the urea host forms helical ribbons held together by hydrogen bonds to form a series of linear, hexagonal tunnels. Because UICs can encapsulate a wide variety of linear guest molecules, they serve as useful model systems for probing mechanisms of crystal growth and molecular recognition. In this thesis, the syntheses (or attempts thereof) of six compounds that will serve as consequential guest molecules in studies of UICs are p

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32

Rush, Jeremy Richard. "Crystal growth, guest ordering and ferroelastic properties of urea inclusion compounds." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/526.

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33

Lubhelwana, Siyanda. "Crystal isostructurality and X-ray diffraction studies of cyclodextrin inclusion compounds." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/6324.

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Includes bibliographical references.<br>The first part of this dissertation is an update on the isostructurality method of PXRD analysis (lsoPXRD), the last update having been published in 2001 The scope of the isostructurality part of this dissertation includes organic inclusion complexes of all three natural cyclodextrins (a-,

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34

Groeneman, Ryan H. "Investigating the inclusion chemistry of multi-dimensional coordiation polymers /." free to MU campus, to others for purchase, 2000. http://wwwlib.umi.com/cr/mo/fullcit?p9999289.

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35

Schiller, Robert Lindsay. "Kinetic and equilibrium studies of some dye-cyclodextrin inclusion complexes /." Title page, contents and abstract only, 1986. http://web4.library.adelaide.edu.au/theses/09PH/09phs334.pdf.

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36

Calderini, Adriana. "Encapsulação e caracterização fisico-quimica do farmaco vasodilatador minoxidil em ciclodextrinas." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250348.

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Orientador: Francisco Benedito Teixeira Pessine<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-07T11:44:21Z (GMT). No. of bitstreams: 1 Calderini_Adriana_M.pdf: 3626167 bytes, checksum: 65a0e866a04669d0055a59e424f4d2c5 (MD5) Previous issue date: 2006<br>Mestrado<br>Físico-Química<br>Mestre em Química

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37

Yang, Xiaorong. "Solid state NMR studies of the guest molecules in urea inclusion compounds." Berlin Logos-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2938394&prov=M&dok_var=1&dok_ext=htm.

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Tonkins, Alexander John. "Synthesis of novel spirobisfluorenes as precursors to microporous polymers and inclusion compounds." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54245/.

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39

Palmer, Benjamin Alexander. "Structural properties, X-ray birefringence and crystal growth of solid organic inclusion compounds." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/37422/.

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This thesis presents several new insights into the behaviour and properties of solid organic inclusion compounds and explores some of the potential applications of these properties. The thesis considers the structural properties, X-ray birefringence and crystal growth of urea and thiourea inclusion compounds. Chapter 1 provides an introduction to organic solid inclusion compounds, surveying the physico-chemical properties and applications of urea and thiourea inclusion compounds. In Chapter 2, the basic theory of the experimental techniques utilized in this thesis is introduced. These techniqu

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40

Brown, Gavin Robert. "The physicochemical characterisation of cyclodextrin inclusion compounds with non-steroidal anti-inflammatory drugs." Thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/23177.

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The cyclodextrins and their derivatives have been utilised as complexing agents for a wide range of pharmaceutical compounds, through their ability to include small molecular weight molecules inside an annular cavity formed by linked glucose residues of varying number. The non-steroidal anti-inflammatory drugs (NSAIDs), a group of agents that share a similar therapeutic effect in the management of inflammatory processes in the body, have been studied as guest molecules for inclusion in cyclodextrins, due to a number of potential advantages that are conferred by complexation, such as improved b

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41

Edwards-Gau, Gregory R. "X-ray Birefringence Imaging and other fundamental aspects of solid organic inclusion compounds." Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/75370/.

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This thesis presents new experimental techniques and utilizes these strategies in the analysis of solid organic inclusion compounds. This thesis also reports the production of a new series of co-crystals and examines their crystal structures. Chapter 1 acts as an introduction to the materials studied in this research. It explains the properties of inclusion compounds and lists the chemical materials used for these experiments. Chapter 2 explains the experimental techniques used in this research. Specifically it explains X-ray diffraction, X-ray birefringence and in-situ solid-state NMR. Chapte

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42

Yang, Xiaorong [Verfasser]. "Solid-state NMR studies of the guest molecules in urea inclusion compounds / Xiaorong Yang." Berlin : Logos-Verl, 2007. http://d-nb.info/997157755/34.

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43

Grandelli, Heather Eilenfield. "Formation of Cyclodextrin-Drug Inclusion Compounds and Polymeric Drug Delivery Systems using Supercritical Carbon Dioxide." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23891.

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New methods for the preparation of porous biomedical scaffolds have been explored for applications in tissue engineering and drug delivery. Scaffolds with controlled pore morphologies have been generated which incorporate cyclodextrin-drug inclusion complexes as the drug delivery component. Supercritical CO2 was explored as the main processing fluid in the complex formation and in the foaming of the polymer scaffold. The co-solvents, ethanol, ethyl acetate and acetone, were explored in each stage, as needed, to improve the solvent power of CO2. The first goal was to promote cyclodextri

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44

Alquist, Keith Eldred III. "Structural studies of phase behavior in 1,6-dicyanohexane/urea and 1,6-diisocyanohexane/urea inclusion compounds." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18814.

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Master of Science<br>Department of Chemistry<br>Mark Hollingsworth<br>The crystal structures of the inclusion compounds 1,6-diisocyanohexane/urea and 1,6-dicyanohexane/urea were refined at several temperatures from X-ray data. These urea inclusion compounds are commensurate structures with host:guest ratios of 6:1. In contrast with the ordinary helical topology of the urea host, these structures have stacked loop topologies of the host hydrogen bonds and crystallize in space group P21/n. At room temperature, both structures are distorted along [001] from hexagonal metric symmetry. As in ea

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45

Jesus, Marcelo Bispo de 1980. "Preparação, caracterização e avaliação da formulação anti-helmintica de praziquanel em beta-ciclodextrina." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314152.

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Orientador: Eneida de Paula<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-06T15:54:34Z (GMT). No. of bitstreams: 1 Jesus_MarceloBispode_M.pdf: 3394057 bytes, checksum: 4efc7e982e2ad581d46398e2f54babbe (MD5) Previous issue date: 2006<br>Resumo: As parasitoses provocadas por helmintos são um problema médico e de saúde pública em todo o mundo. Cerca de 10 % das pessoas infectadas com esquistossomose sofrem sérios danos e cerca de 500.000 mortes ocorrem no mundo todos os anos, sendo 200 milhões de pessoas infectadas pe

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Smart, Sharon Patricia. "Structural and dynamic properties of alpha, omega-dibromoalkanes and other guest molecules in their urea inclusion compounds." Thesis, University of St Andrews, 1993. http://hdl.handle.net/10023/14930.

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The work described in this thesis focuses on the urea inclusion compounds of α, ω-dibromo-n-alkanes: Br(CH2)[sub]nBr/urea, where n=7-10. The structural and dynamic properties of the host and guest have been studied using complementary techniques. Photographic single crystal x-ray diffraction shows that, in the regions of three- dimensional guest molecular ordering, there is a well-defined offset, Δg, along the channel axis, c, between guest molecules in adjacent channels. Δg is exactly one-third of the periodic repeat distance along c of the basic guest structure: this represents a new mode of

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Ribeiro, Anderson Orzari. "Interação entre α-ciclodextrina e compostos de terras raras luminescentes." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-14052002-102246/.

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O estudo dos processos de transferência de energia por íons opticamente ativos em matrizes rígidas vem recebendo bastante atenção por parte de pesquisadores, devido a importância destes processos em dispositivos de estado sólido, tais como laseres e materiais ópticos e eletrônicos. Esses materiais luminescentes (luminóforos) em solução aquosa podem ainda ser muito úteis como sensores ou sondas para análises de biomateriais. Neste contexto, íons de terras raras (TR) e as ciclodextrinas (CD) são muito importantes, já que podem participar no estado sólido e em solução. Algumas TRs como o európ

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Valeri, Fabiana Cristina Bonilha. "Utilização de sensores biológicos baseados em células de resposta imune no estudo da atividade antialérgica de substâncias naturais." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-28052009-153502/.

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Neste trabalho foram investigadas a atividade antialérgica de extratos, ou substâncias isoladas, obtidos de fontes naturais. Para isso foi utilizado o sistema biossensor baseado em mastócitos os quais liberam a enzima beta-hexosaminidase usada como marcador da degranulação. Para algumas substâncias naturais da classe dos flavonóides (quercetina-Qc e rutina-Rt) e ácidos polifenólicos (ácido dimetoxicinâmico-Dm e ácido cafeico-Cf), os ensaios biológicos foram conduzidos na presença de beta-ciclodextrina (beta-CD) a fim de estudar a eficiência do ensaio biológico e o efeito de complexação na ativ

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Granero-García, Rubén. "Investigating the hydration and structural changes of molecular organic materials under high-pressure conditions." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://hdl.handle.net/11858/00-1735-0000-002B-7CB2-2.

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Paula, Elgte Elmin Borges de. "Encapsulação de moléculas com atividade antileishmania e antimalárica em ciclodextrinas: preparo, caracterização físico-química e avaliação biológica." Universidade Federal de Juiz de Fora (UFJF), 2013. https://repositorio.ufjf.br/jspui/handle/ufjf/4433.

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