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Dissertations / Theses on the topic 'Charge transfer in biology'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Zhang, Houyu. "Theories of long-range charge transfer in DNA and quantum dissipation /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202002%20ZHANG.

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Thesis (Ph. D.)--Hong Kong University of Science and Technology, 2002.<br>Includes bibliographical references (leaves 169-170). Also available in electronic version. Access restricted to campus users.

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2

Bjorklund, Chad Christopher. "The effects of nucleosome core particle packaging on DNA charge transport." Online access for everyone, 2006. http://www.dissertations.wsu.edu/Dissertations/Fall2006/c_bjorklund_120606.pdf.

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3

Amstutz, Michael D. "Development of a charge-shifting polyion-mediated intramammary gene transfer system for production of recombinant proteins in milk /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487943610785448.

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4

Güler, Gözde. "Part 1 controlling barriers to charge transfer in DNA : Part 2 : DNA-directed assembly of conducting oligomers /." Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26621.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2009.<br>Committee Chair: Schuster, Gary; Committee Member: Barry, Bridgette; Committee Member: Collard, David; Committee Member: Tolbert, Laren; Committee Member: Wartell, Roger. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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5

Roberts, Lezah Wilette. "Effect of Netropsin on One-electron Oxidation of DNA." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7228.

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One electron oxidation of DNA has been studied extensively over the years. When a charge is injected into a DNA duplex, it migrates through the DNA until it reaches a trap. Upon further reactions, damage occurs in this area and strand cleavage can occur. Many works have been performed to see what can affect this damage to DNA. Netropsin is a minor groove binder that can bind to tracts of four to five A:T base pairs. It has been used in the studies within to determine if it can protect DNA against oxidative damage, caused by one-electron oxidation, when it is bound within the minor groove o

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6

Güler, Gözde. "Part 1: Controlling barriers to charge transfer in DNA Part 2: DNA-directed assembly of conducting oligomers." Diss., Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26621.

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A series of anthraquinone-linked DNA oligonucleotides was prepared and the efficiency of long-distance radical cation migration was measured. In one set of oligonucleotides, two GG steps are separated by either a TATA or an ATAT bridge. In these two compounds, the efficiency of radical cation migration from GG to GG differs by more than an order of magnitude. Replacement of the thymines in the TATA or ATAT bridges with 3-methyl-2-pyridone (t, a thymine analog) results in the much more efficient radical cation migration across the bridge in both cases. This is attributed to a decrease in the ox

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7

Ghosh, Avik Kumar. "Charge migration and one-electron oxidation at adenine and thymidine containing DNA strands and role of guanine N1 imino proton in long range charge migration through DNA." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-05132007-000502/.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2008.<br>Wartell, Roger, Committee Member ; Bunz, Uwe, Committee Member ; Doyle, Donald, Committee Member ; Fahrni, Christoph, Committee Member ; Schuster, Gary, Committee Chair.

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8

Das, Prolay. "Long-Range Charge Transfer in Plasmid DNA Condensates and DNA-Directed Assembly of Conducting Polymers." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19856.

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Long-distance radical cation transport was studied in DNA condensates where linearized pUC19 plasmid was ligated to an oligomer and transformed into DNA condensates with spermidine. DNA condensates were detected by Dynamic Light Scattering and observed by Transmission Electron Microscopy. Introduction of charge into the condensates causes long-distance charge migration, which is detected by reaction at the remote guanines. The efficiency of charge migration in the condensate is significantly less than it is for the corresponding oligomer in solution. This result is attributed to a lower mobili

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9

Mecker, Christoph J. Chemistry Faculty of Science UNSW. "The synthesis of advanced " special pair " models for the photosynthetic reaction centre." Awarded by:University of New South Wales. School of Chemistry, 2000. http://handle.unsw.edu.au/1959.4/17835.

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Multi-step photoinduced electron transfer takes place over a large distance in the photosynthetic reaction centres (PRCs). Electron donor in this life-spending event is the photo-excited 'special pair', a unit of two electronically coupled porphyrinoid chromophores. Bacteriopheophytin and two quinone molecules function as electron acceptors and contribute to the charge separation with almost unit quantum efficiency. The natural photosynthetic reaction centre is the most sophisticated molecular electronic device to date and interest is high in increasing our understanding of the basic quantum

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10

Umeweni, Chiko. "Synthesis of Internally Linked Carbazole DNA Oligomers: A Potential Monitor for Charge Transfer in DNA Studies." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07052005-161648/.

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11

Wallrapp, Frank. "Mixed quantum and classical simulation techniques for mapping electron transfer in proteins." Doctoral thesis, Universitat Pompeu Fabra, 2011. http://hdl.handle.net/10803/22685.

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El objetivo de esta tesis se centra en el estudio de la transferencia de electrones (ET), una de las reacciones más simples y cruciales en bioquímica. Para dichos procesos, obtener información directa de los factores que lo promueves, asi como del camino de transferencia electronica, no es una tarea trivial. Dicha información a un nivel de conocimiento detallado atómico y electrónico, sin embargo, es muy valiosa en términos de una mejor comprensión del ciclo enzimático, que podría conducir, por ejemplo, a un dise

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12

Ding, Yanli. "Studies of charge translocation by Bufo marinus Na⁺/K⁺ ATPase in its Na⁺/Na⁺ exchange mode." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1258082803.

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13

Lüdemann, Gesa [Verfasser], and M. [Akademischer Betreuer] Elstner. "Light-induced Charge Transfer in Proteins of the Cryptochrome/Photolyase Family / Gesa Lüdemann. Betreuer: M. Elstner." Karlsruhe : KIT-Bibliothek, 2015. http://d-nb.info/1075253667/34.

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14

Holub, Daniel [Verfasser], and M. [Akademischer Betreuer] Elstner. "Application and Development of Charge Transfer Simulations in Biological and Organic Systems / Daniel Holub ; Betreuer: M. Elstner." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1192373723/34.

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15

Odlander, Paulina. "Optimisation and Validation of PCR Method for HLA Gene Expression to Enable PCR System Transfer and Master Mix Change." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-171826.

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Health Tech company Dynamic Code AB provides a PCR test for determination of HLA DQ-genes connected to development of celiac disease. The PCR method is probe based and in real time and is at this time carried through on the, somewhat outdated, PCR instrument from Thermo Fisher/Applied Biosystems called 7300 Real-Time PCR System. The run time for this analysis on the instrument is 1 hour and 50 minutes. The Master Mix in use is TaqMan™ Gene Expression Master Mix, from the same manufacturer. Moving on to a more modern PCR instrument is a natural step for the company and is favourable in several

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16

Mohideen, Mohamed Farhaan. "Charge transfer process." Thesis, Staffordshire University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246022.

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17

Liu, Chuan. "Charge transport and charge transfer at organic semiconductor heterojunctions." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611516.

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18

Stanger, Jonathan Jeffrey. "Charge Transfer Mechanisms in Electrospinning." Thesis, University of Canterbury. Physics and Astronomy, 2008. http://hdl.handle.net/10092/1667.

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Electrospinning is a method of producing nano structured material from a polymer solution or melt using high strength electric fields. It is a process that has yet to find extensive industrial application yet shows promise if obstacles such as low rate of production overcome perhaps by more complete theoretical modelling. This work examines the effects of adding an ionic salt to a solution of poly(vinyl alcohol) in water. The direct effect was an increase the charge density and electric current. It was found that an increase in charge density decreases the mass deposition rate and forms a

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19

Lindner, Susi. "Charge transfer at phthalocyanine interfaces." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-146526.

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Using X-ray photoelectron (XPS) and X-ray absorbtion spectroscopy (XAS) we demonstrate charge transfer at an interface between two transition metal phthalocyanines, MnPc and F16CoPc, resulting in charged MnPc + and F16CoPc -, species. Density functional theory calculations reveal that a hybrid state is formed between the two types of phthalocyanines, which causes this charge transfer. For the hybrid state the Mn3dxz interacts with the Co 3dz2 orbital leading to a two-level system. Moreover, we have prepared mixed films out of this pair, which were characterized also by means of electron energ

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20

Rickman, Edward E. "Study of resonant charge transfer." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/101461.

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Experimental measurements ol N₂ resonant charge transfer cross sections were performed. It was found that the energy of electrons used to produce the N₂⁺ ions is an important variable with respect to cross section. An examination of the experimental precision was performed and it was found that the precision of measurement was insufficient to determine the exact form of this relationship. The effect of ion energy (collisional energy) was too small to be seen. Modulated detection was used to improve precision and permit measurement at high noise levels. A description of the apparatus is provi

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21

Zhu, Yongbao. "Charge transfer in conjugated organometallic materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/NQ56656.pdf.

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22

Bradley, J. P. "Charge transfer during ion-atom collisions." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426960.

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23

Kambhampati, Patanjali. "Adsorbate-substrate charge transfer excited states /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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24

Adamczyk, Katrin. "Ultrafast charge transfer processes in solution." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2010. http://dx.doi.org/10.18452/16202.

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Die Reaktionspfade und Reaktionsdynamik photoinduzierter bimolekularer Ladungstransferreaktionen werden mit Hilfe der ultraschnellen polarisationsabhängigen UV-Pump/IR-Probe-Spektroskopie charakterisiert. Allgemein akzeptierte Modelle zur Beschreibung von bimolekularen Elektrontranserreaktionen nehmen an, dass Ladungstrennung in polaren Lösungsmitteln zu zwei Arten von Ionenpaaren führt, den lockeren (LIPs) und den engen Ionenpaaren (TIPs). TIPs und LIPs können durch die Beobachtung von Schwingungsmoden spektroskopisch unterschieden werden. Allerdings deuten die multiplen Zeitskalen sowohl für

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25

Taylor, Gordon. "Simulation of charge transfer at ultramicrointerfaces." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/13078.

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This work details the simulation of charge transfer at ultramicrointerfaces. A novel algorithm is presented for the simulation of electrochemical techniques applied to both ultramicrodisc and ultramicropipette electrodes. <i>Numerical Method</i>. The simulations employ the Crank-Nicolson finite differences or the Alternating Direction Implicit (ADI) method extended to include expansion of the space grid in two dimensions, a n-point current calculation and implicit determination of boundary conditions. The effects are determined of; point separation, choice of grid expansion equation, boundary

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26

Clay, R. T., A. B. Ward, N. Gomes, and S. Mazumdar. "Bond patterns and charge-order amplitude in quarter-filled charge-transfer solids." AMER PHYSICAL SOC, 2017. http://hdl.handle.net/10150/623194.

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Most quasi-one-dimensional (quasi-1D) quarter-filled organic charge-transfer solids (CTS) with insulating ground states have two thermodynamic transitions: a high-temperature metal-insulator transition followed by a low-temperature magnetic transition. This sequence of transitions can be understood within the 1D Peierlsextended Hubbard (PEH) model. However, in some quasi-1D CTS both transitions occur simultaneously in a direct metal to spin-gapped insulator transition. In this second class of materials the organic stack bond distortion pattern does not follow the pattern of a second dimerizati

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27

Preuss, Kathryn Elvia. "Sulfur nitrogen heterocycles as charge transfer materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/NQ53510.pdf.

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28

Schirra, Laura Kristy. "Charge Transfer at Metal Oxide/Organic Interfaces." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/217090.

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Interfacial charge transfer between metal oxides and organic semiconductors has been found to limit the efficiency of organic optoelectronic devices. Although a number of investigations of inorganic/organic systems exist, very few generally applicable rules for oxide/organic interfaces have been developed and many questions about these systems remain unanswered. Thus the studies presented in this dissertation were designed to improve the understanding of the fundamental interface physics of metal oxide/organic systems. Single molecule fluorescence microscopy was employed to determine the charg

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29

Williams, Alvin Scott. "Charge transfer induced osmylation of aromatic compounds." Thesis, University College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309472.

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30

Pradhan, Sulolit. "Solid state charge transfer in nanoparticle solids /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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31

Treadway, Christopher Ryan Gray Harry B. Barton Jacqueline K. "Spectroscopic characterization of DNA-mediated charge transfer /." Diss., Pasadena, Calif. : California Institute of Technology, 2003. http://resolver.caltech.edu/CaltechETD:etd-05252003-231704.

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32

Morgenstern, Frederik Stephan Franz. "Charge transfer dynamics in hybrid nanocrystal systems." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708746.

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33

Batty, Simon V. "The investigation of novel charge transfer systems." Thesis, Sheffield Hallam University, 1991. http://shura.shu.ac.uk/19330/.

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In this project a number of synthetic procedures were investigated with a view to preparing a new type of charge transfer polymer system having a structure based on that of side chain liquid crystal polymers, in that the hoped for polymer was composed of charge transfer acceptors connected to a polymer backbone via a flexible alkyl spacer linkage. As part of this work new charge transfer complexes were prepared some of which have shown possible novel properties, such as, co-operative magnetic effects and film forming capabilities. Finally, in order to characterise materials prepared, a Faraday

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34

Campbell, J. A. "Charge transfer processes at liquid/liquid interfaces." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/13298.

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An approximate analytical expression for the current potential characteristic for charge transfer at a microdisc interface under steady state conditions is given for reversible, quasireversible and irreversible kinetics. The quasireversible expression is proposed as a simple means for analysis of experimental voltammograms thus gaining access to the potential dependent forward rate constant and the charge transfer coefficient, α. It is used to analyse simulated data and the results compared to the simulation parameters. The mathematics of the linear diffusion of cyclic voltammetry for electron

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35

Rice, Elisabeth. "Computational modelling of electronic states, charge transfer and charge transport in organic semiconductors." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/59946.

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In this thesis, we model electronic states, charge transfer and charge transport in organic semiconductors (OSCs). We are interested in the effect of chemical structure, molecular packing and different types of disorder on the charge transport in these materials, which is an important factor determining the efficiencies of devices made with OSCs. This is an intrinsically multiscale problem, and we use computational methods than span length and time-scales. We investigate the effect of molecular packing and crystal structure on charge carrier mobility in molecular crystals. We also model the el

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36

Cao, Huachuan. "Probe Oxidative Damage in DNA Charge Transfer Process." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6983.

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As a hydrophilic biopolymer, a DNA molecule is surrounded by water molecules in aqueous solution. The charge hopping mechanism indicates the competition between radical cation quenching by water molecules and migration along DNA partially determines the distance and efficiency of charge transport in DNA. Lipid can effectively bind DNA to induce hydrophobic environment around the DNA helix and reduce the water contact with bases in the DNA duplex. Therefore, the effect of water molecules on charge transport can be studied by comparison between nature DNA and DNA-lipid complexes. We synthesized

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37

Appling, Jeffrey Robert. "Gaseous charge transfer reactions of multiply charged ions." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/27382.

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38

Ieta, Adrian C. "Charge transfer & dielectric properties in hydrocarbon mixtures." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ39835.pdf.

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39

Pearson, C. "Langmuir-Blodgett films of organic charge-transfer complexes." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5390/.

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This thesis is concerned with the preparation of floating films of electrically conductive organic charge-transfer complexes and their subsequent transfer to solid substrates by the Langmuir-Blodgett (LB) technique. Characterisation of the morphology (using ellipsometry, surface profiling, optical and scanning electron microscopy, energy dispersive spectroscopy and optical absorption spectroscopy) and electrical properties (at room temperature and low temperature) of the resulting multilayer structures is discussed. Three different systems were investigated: (i) mixed films containing the long

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40

Couves, John W. "Photocurrent processes in macrocylic and charge transfer complexes." Thesis, University of Kent, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328637.

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41

Wilkins, P. M. "Double detachment and charge transfer from H'- ions." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373903.

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42

Gregory, David. "Charge transfer studies of alkali-metal/semiconductor interfaces." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240051.

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43

Zilic, Elvis. "Radiation curing and grafting of charge transfer complexes." View thesis, 2008. http://handle.uws.edu.au:8081/1959.7/19385.

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Thesis (Ph.D.)--University of Western Sydney, 2008.<br>Thesis submitted to the University of Western Sydney, College of Health and Science, School of Natural Sciences, in fulfilment of the requirements for admission to the Doctor of Philosophy. Includes bibliography.

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44

Gillespie, Peter N. O. "Theory of charge transfer in solar energy materials." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/22771/.

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45

Speck, J. Matthäus. "Ferrocenyl-substituted Thiophenes – Electrochemical Behavior and Charge Transfer." Doctoral thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-208811.

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Die vorliegende Dissertation beschäftigt sich mit dem elektrochemischen Verhalten verschiedener Ferrocenyl-substituierter Thiophene. Dabei wird sich zunächst mit dem elektrochemischen Verhalten der Serie der Ferrocenylthiophene beschäftigt, die Anzahl der Ferrocenyleinheiten variiert von n = 1 – 4. Die Abhängigkeit der elektronischen Eigenschaften von numerischen und konstitutionellen Veränderungen der redox-aktiven Gruppen wird evaluiert. Daraus resultierend wird sich einer eingehenderen Untersuchung und Modifikation des 2,5-Diferrocenylthiophen-Motivs zugewandt. Diese Modifikationen werden i

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46

Siles, P. F., T. Hahn, G. Salvan, M. Knupfer, F. Zhu, D. R. T. Zahn, and O. G. Schmidt. "Tunable charge transfer properties in metal-phthalocyanine heterojunctions." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-219903.

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Organic materials such as phthalocyanine-based systems present a great potential for organic device applications due to the possibility of integrating films of different organic materials to create organic heterostructures which combine the electrical capabilities of each material. This opens the possibility to precisely engineer and tune new electrical properties. In particular, similar transition metal phthalocyanines demonstrate hybridization and charge transfer properties which could lead to interesting physical phenomena. Although, when considering device dimensions, a better understandin

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47

Schlientz, Nathan William. "Charge Migration through Duplex DNA: A Study of the Mechanism for Charge Migration and Oxidative Damage." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-05182006-164757/.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2007.<br>Laren M. Tolbert, Committee Member ; Uzi Landman, Committee Member ; Nicholas V. Hud, Committee Member ; David M. Collard, Committee Member ; Gary B. Schuster, Committee Chair.

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48

Florentin, Emmanuel. "Régulation de l'activité de la Protéine humaine de Transfert des Esters de Cholestérol (CETP) :Interactions électrostatiques avec les dérivés carboxylés (acides gras non estérifiés et rétinoïdes)." Phd thesis, Université de Bourgogne, 1997. http://tel.archives-ouvertes.fr/tel-00297283.

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Dans le plasma, la protéine humaine de transfert des esters de cholestérol joueun rôle central dans le métabolisme des lipoprotéines plasmatiques en catalysant le transfert net massique d'esters de cholestérol des HDL vers les lipoprotéines contenant de l'Apo.B, et de triglycérides des VLDL vers les HDL et LDL. Bien que le rôle de la CETP sur l'athérogénicité du profil lipoprotéique reste à l'heure actuelle encore ambigu, l'étude des mécanismes de régulation de cette protéine suscite un intérêt croissant d'un point de vue pharmacologique en particulier en ce qui concerne le développement d'inh

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49

Fonari, Alexandr. "Theoretical description of charge-transport and charge-generation parameters in single-component and bimolecular charge-transfer organic semiconductors." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54323.

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In this dissertation, we employ a number of computational methods, including Ab Initio, Density Functional Theory, and Molecular Dynamics simulations to investigate key microscopic parameters that govern charge-transport and charge-generation in single-component and bimolecular charge-transfer organic semiconductors. First, electronic (transfer integrals, bandwidths, effective masses) and electron-phonon couplings of single-component organic semiconductors are discussed. In particular, we evaluate microscopic charge-transport parameters in a series of nonlinear acenes with extended pi-conjuga

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50

Mason, Brian L. "An experimental investigation of charge transfer during ice contact interactions /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/9769.

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