Dissertations / Theses on the topic 'Crown ethers'
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Huang, Zilin. "Synthesis and Complexation Studies of Novel Functionalized Crown Ethers and Azacrown Ethers." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5593/.
Full textOwens, K. A. "Polycyclic crown ethers incorporating cyclophane units." Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370864.
Full textWilson, Mark James. "Activity relationships for aromatic crown ethers." Thesis, University of Strathclyde, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249872.
Full textHuang, Zilin. "Synthesis and Properties of Novel Cage-Annulated Crown Ethers." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc5523/.
Full textDenike, John Kane Carleton University Dissertation Chemistry. "The synthesis and complexation of bis-crown ethers and polymers bearing pendant crown ethers and the study of molecular motion of crown ethers in solids using solid state 2H NMR." Ottawa, 1992.
Find full textJi, Mingzhe. "Explorations with optically active, cage-annulated crown ethers." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4207/.
Full textMerithew, Andrew William. "Differential Self-Assembly of Novel Redox Crown Ethers." Thesis, University of California, Santa Barbara, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3645672.
Full textRetinal prosthesis relies on the stimulation of living nerve tissue behind the rods and cones of the eye. The current state of the art relies on electrodes controlled by cameras which directly stimulate the nerve tissue to elicit a response to an image. These types of retinal implants have allowed for short-term crude vision in patients but have had limited long term success due to external battery packs and electroplating of the implanted electrodes.
Ionic stimulation is one of the principle mechanisms that sensory neurons utilize in the generation of an action potential. In a complex transduction pathway, ionic gradients are constantly altered inside the neuron by voltage sensors or mechanically controlled gates embedded in the neuronal cell membrane; responsible for the open and close state of these ion channels.
It has been demonstrated that local concentration increases of K + by direct injection proximal to the nerve can elicit nerve firing at a concentration of 15-20 mM (3-4X normal concentration) increase in K + concentration. As part of a larger concept of integrating biotechnology with nanofabrication, the materials for the development of potassium selective sequestration/storage and delivery were developed in the form of a redox-gated K+ selective crown ether.
The structure of the anthraquinone-based crown was deduced by computational simulation and stoichiometry of the complex confirmed by mass spec. along with 2D diffusion NMR techniques. In this instance, the stoichiometry could be controlled by the addition of different salts to give a 1:1 complex with large, aromatic anions and a 2:1 complex with smaller anions such as triflate. The synthesis of the molecule was optimized by computational modeling and simulations of transport through an artificial membrane. The selectivity of the architecture developed was specific for K+ over Na+, the other major ionic species present in the blood. The mechanism influencing the self-assembly of this class of compounds has much to do with the breakage of intramolecular π-stacking interactions and the formation of stronger intermolecular π-stacking interactions.
Finally, the transport of K+ through nanoporous membranes and single nanopores with novel PEG-type polymeric dispersions is demonstrated. This thesis concludes with future work toward developing more advanced transporters and proposes novel uses for anthraquinone-appended polymers as proton exchange membranes and DNA-base pair interchelators.
D'Souza, Lawrence Joseph. "Bile Acid Based Molecular Tweezers And Crown Ethers." Thesis, Indian Institute of Science, 1995. https://etd.iisc.ac.in/handle/2005/114.
Full textD'Souza, Lawrence Joseph. "Bile Acid Based Molecular Tweezers And Crown Ethers." Thesis, Indian Institute of Science, 1995. http://hdl.handle.net/2005/114.
Full textLandry, Denis Joseph Carleton University Dissertation Chemistry. "Approaches to the synthesis and sterochemical analysis of aza crown ethers." Ottawa, 1989.
Find full textMcClean, G. O. "Fluorescent sensors based on benzo-15-crown-5 ethers." Thesis, Queen's University Belfast, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403172.
Full textMoody, T. S. "Switches based on crown ethers, cyclophanes and amino acids." Thesis, Queen's University Belfast, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390876.
Full textMousley, David P. "The application of bis(benzo)-crown ethers as multireceptors." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295075.
Full textRademacher, Christine Marie Koebel. "Synthetic studies toward pederic acid and photochromic crown ethers." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1311869400.
Full textTseki, Potlaki Foster. "Metal complexes of thiophene analogues of crown ethers and cryptands." Thesis, Nottingham Trent University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386053.
Full textGhorbanian, Shohreh. "Studies of potentially useful thiol-reactive fluorescent probes and novel ion-responsive fluorescent quinoxalinone derivatives." Thesis, Brunel University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360815.
Full textYonekawa, Sayuri. "The synthesis and study of an amine functionalized crown ether." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1295147.
Full textDepartment of Chemistry
Meehan, Paul R. "Complexation of neutral and cationic scandium(III) species with macrocyclic ligands." Thesis, University of Warwick, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339827.
Full textHazlewood, Anna. "Synthesis and properties of novel cage-functionalized crown ethers and cryptands." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc2896/.
Full textBaniasadi, Hamid R. "The synthesis and study of new phosphines functionalized with crown ethers." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1398707.
Full textDepartment of Chemistry
Acord, Douglas A. "The synthesis and study of 5-oxime-2-methoxy-1,3-xylyl-18-crown-5." Muncie, Ind. : Ball State University, 2009. http://cardinalscholar.bsu.edu/634.
Full textAmoozgar, Zohreh. "Synthesis and study of dibenzodihydroxy-26-crown-8." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1371681.
Full textDepartment of Chemistry
Kleissler, Charles Richard. "Comparison of poly(vinyl alcohol) backbone-grafted ethers and chain-growth crown ether polymers in selective cation adsorption." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/10115.
Full textSimpson, Michael Alan. "Synthesis and characterisation of potential ion conducting materials incorporating crown ethers." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/690.
Full textChen, Zhibing. "Synthesis and host-guest interaction of cage-annulated podands, crown ethers, cryptands, cavitands and non-cage-annulated cryptands." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4229/.
Full textKeefer, Chad D. "The synthesis and study of a phosphine functionalized crown ether." Virtual Press, 2005. http://liblink.bsu.edu/uhtbin/catkey/1318448.
Full textDepartment of Chemistry
Clarkson, Richard John. "An investigation of some oxygen heterocycles : their polymerisation and effect on polymer properties." Thesis, Lancaster University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360642.
Full textShi, Danxin. "Preliminary research toward the total synthesis of a novel crown ether that is a potential fluorescent chemosensor for potassium ion recognition." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941374.
Full textDepartment of Chemistry
Lai, Huiguo. "Design and Synthesis of Novel Cage-Functionalized Crown Ethers: A New Class of Ag Complexants." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4314/.
Full textKiviniemi, S. (Sari). "Complexation of N-heteroaromatic cations with crown ethers and tetraphenylborate." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514259971.
Full textHausner, Sven H. "Part I: Dibenzotetraaza Crown Ethers. Part II: Synthesis and Characterization of Chlorophenyplumbates." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin998489402.
Full textBheda, Mukesh C. "Synthesis and characterization of novel molecular architectures : polyrotaxanes and catenanes /." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-05222007-091350/.
Full textEngen, Paul Todd. "Novel polymer architectures : polyrotaxanes /." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134515/.
Full textHan, Dong. "Synthesis of Crown Ether/Ammonium Salt for Electron Transfer Study." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3141/.
Full textPoola, Bhaskar. "Synthesis and characterization of quinoxaline-functionalized, cage-annulated oxa- and thiacrown ethers and reaction chemistry of the diphosphine ligand 2,3-bis(diphenylphosphino)-N-p-tolylmaleimide (bmi) at triosmium carbonyl clusters." Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5608/.
Full textQian, Weiguang. "A preliminary investigation of solid sampling for mass spectrometric analysis of crown ethers." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/490218.
Full textSaunders, Graham Charles. "Redox-active transition metal compounds containing crown ethers as ligands and related studies." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253407.
Full textLeeson, Philip. "Computer modelling of calixerene compounds capable of selectively extracting lanthanide metals from nuclear waste slurries." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484312.
Full textMbadike, Okey Patrick. "The preparation and study of new metal binding reagents." Virtual Press, 1990. http://liblink.bsu.edu/uhtbin/catkey/722440.
Full textDepartment of Chemistry
Cooper, Paul J. "Ligands for the coordination of lead." Thesis, University of Bath, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336265.
Full textPatel, Hitesh Kumar. "Studies towards synthetic receptors for small peptides." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240948.
Full textMcKim, Artie S. "Synthesis and Alkali Metal Extraction Properties of Novel Cage-Functionalized Crown Coronands and Cryptands." Thesis, University of North Texas, 1999. https://digital.library.unt.edu/ark:/67531/metadc277666/.
Full textShen, Ya Xi. "New polymer architectures : synthesis and characterization of polyurethane-crown ether based polyrotaxanes /." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-02052007-081239/.
Full textBryant, William Stephen. "Self-Assembly: Synthesis and Complexation of Crown Ethers and Cryptands with R2-NH2 Ions." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/77980.
Full textPh. D.
陳淑恆 and Suk-hang Chan. "Synthesis of diazacrown ether and transition metal containing polymersby atom transfer radical polymerization and other methods." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B3124287X.
Full textNkansah, Shadrack Osei. "Electrospray mass spectrometry : an investigation of non- covalent interactions of histone/crown ether complexes and applied methods of computational chemistry." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1014849.
Full textDepartment of Chemistry
Sheu, Biing-Jahn. "The synthesis and characterization by use of spectroscopic and x- ray methods of bromo, phosphine, and nitro derivatives of 13-phenyl- 1,4,7,10-tetraoxa-13-azacyclopentadecane." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834528.
Full textDepartment of Chemistry
Clapham, Bruce. "Scintillation counting in molecular recognition and combinatorial chemistry." Thesis, Nottingham Trent University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298841.
Full textChan, Suk-hang. "Synthesis of diazacrown ether and transition metal containing polymers by atom transfer radical polymerization and other methods /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25212102.
Full textHaddadian, Fereshteh. "The synthesis and characterization of phosphine functionalized crown ethers by use of spectroscopic and x-ray methods." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/958795.
Full textDepartment of Chemistry