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Dissertations / Theses on the topic 'Charge transfer or electron donor-acceptor complex'

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1

Furman, Gary S. "The contribution of charge-transfer complexes to the color of kraft lignin." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/5644.

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2

Bhattacharyya, Anjan Kumar. "Intramolecular and intracomplex electron transfer in water soluble redox proteins." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184339.

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Electron transfer to and between the redox centers of milk xanthine oxidase was investigated by laser flash-photolysis. Evidence is presented for slow equilibration of electrons (k < 38 s⁻¹) between the various redox centers of the enzyme. The enzyme-bound flavin and the heme moieties of the flavoprotein and cytochrome subunits of p-cresol methyl hydroxylase from Pseudomonas putida are both reduced rapidly in a second order manner by 5-dRF generated by the laser flash, followed by slower first order intramolecular electron transfer (k = 220 s⁻¹) from the protein-bound neutral flavin radical to
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3

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

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Charge transfer (CT) complexes have been used in a number of radiation polymerisation processes including grafting and curing. The complexes studied include donor (D) monomers like vinyl ethers and vinyl acetate (VA) with acceptor (A) monomers such as maleic anhydride (MA). Both UV and EB have been utilised as radiation sources. The complexes are directly grafted to these substrates in the presence of radiation. The complexes yield novel copolymers when radiation cured with concurrent grafting improving the properties of the finished product. The term cure grafting has been proposed for this c
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4

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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5

Svarovsky, Serge A. "Structure, stability and reactivity of small organic sulfinic and sulfonic acids toxicological implications ; Role of charge transfer complexes in oxidation cleavage of benzpinacols by iron (III) trispenanthroline /." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1231.

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6

Khajehpour, Mazdak. "Solvent effects upon the charge-transfer reaction of the ADMA molecule in the excited state /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3025621.

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7

Kinayyigit, Solen. "Platinum (II) charge transfer chromophores electrochemistry, photophysics, and vapochromic sensing applications /." Bowling Green, Ohio : Bowling Green State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1182802954.

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8

Buker, Nicholas D. "Guanidine donors in nonlinear optical chromophores /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/8669.

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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

Soper, Jake D. "Reactions at nitrogenous ligands on oxidizing group 8 metal centers /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/8589.

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11

D'Acchioli, Jason S. "On the nature of the electronics structure of metal-metal quadruply bonded complexes." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1126621699.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xii, 286 p.; also includes graphics (some col.). Includes bibliographical references (p. 273-286). Available online via OhioLINK's ETD Center
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12

Göransson, Erik. "Bridge Mediated Electron Transfer in Conjugated and Cross-Conjugated Donor-Acceptor Compounds." Doctoral thesis, Uppsala universitet, Fysikalisk kemi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-180442.

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Detailed understanding of electron transfer reactions is important in many aspects of chemistry, biology and solar energy conversion. The main aim of this thesis is to provide further insight into electron transfer through highly conjugated bridge structures. Towards this end, three series of donor-acceptor dyads have been studied, all using an oligo(1,4-phenylene-ethynylene) moiety as the bridge. A common theme in these series is that they explore the effects of having either an ethynylene or phenylene as the attachment group between the bridge and the donor or acceptor. Photophysical charact
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13

Shao, Shuai. "Synthesis and Studies of Wide-Band Capturing BODIPY-Fullerene Based Donor-Acceptor Systems." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703394/.

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Artificial photosynthesis is the process, which mimics the natural photosynthesis process in order to convert solar energy to chemical energy. This process can be separated into four parts, which are antenna system, reaction center, water oxidation center, and proton reduction center. If we only focus on the ‘antenna system and reaction center' modules, expanding the absorption band in antenna system and generating long-lived charge separated state in reaction center are two fantastic strategies to design the molecules in order to improve the efficiency of the artificial photosynthesis process
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14

Wallin, Staffan. "The Fate of Electronically Excited States : Ultrafast Electron and Energy Transfer in Solvated Donor-Acceptor Systems." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis (AUU) : Universitetsbiblioteket [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6135.

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15

Gobeze, Habtom Berhane. "Ultrafast Photoinduced Energy and Electron Transfer Studies in Closely Bound Molecular and Nanocarbon Donor-Acceptor Systems." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248516/.

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As part of the study, photosynthetic system constructs based on BF2-chelated dipyrromethene (BODIPY), BF2-chelated azadipyrromethene (AzaBODIPY), porphyrin, phthalocyanine, oxasmaragdyrin, polythiophene, fullerene (C60), single-walled carbon nanotube and graphene are investigated. Antenna systems of BODIPY dyads and oligomers having BODIPY as an excitation energy donor connected to different acceptors including BODIPY, azaBODIPY, oxasmaragdyrin and aluminum porphyrin are studied. Different synthetic methodologies are used to afford donor-acceptor systems either directly linked with no spacer o
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16

GALLONI, PIERLUCA. "Construction of electron-active complex systems as model for artificial photosynthesis." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2004. http://hdl.handle.net/2108/202905.

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La fotosintesi artificiale è un obiettivo ambizioso per la scienza moderna, che richiede una comprensione completa dei sistemi naturali. La comprensione di tutte le diverse reazioni del sistema è uno degli aspetti fondamentali nella ricerca chimica, fisica e biologica. Lo studio delle reazioni di trasferimento elettronico tra un accettore e un donatore è un punto cruciale, sia per lo sviluppo di sistemi artificiali sintetici, sia per possibili applicazioni nella costruzione di dispositivi elettronici e materiali fotosensibili. Lo scopo di questa tesi è stato quello di investigare reazioni di t
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17

Karlsson, Susanne. "Single and Accumulative Electron Transfer – Prerequisites for Artificial Photosynthesis." Doctoral thesis, Uppsala universitet, Kemisk fysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122206.

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Photoinduced electron transfer is involved in a number of photochemical and photobiological processes. One example of this is photosynthesis, where the absorption of sunlight leads to the formation of charge-separated states by electron transfer. The redox equivalents built up by successive photoabsorption and electron transfer is further used for the oxidation of water and reduction of carbon dioxide to sugars. The work presented in this thesis is part of an interdisciplinary effort aiming at a functional mimic of photosynthesis. The goal of this project is to utilize sunlight to produce rene
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18

Borgström, Magnus. "Controlling Charge and Energy Transfer Processes in Artificial Photosynthesis : From Picosecond to Millisecond Dynamics." Doctoral thesis, Uppsala University, Department of Physical Chemistry, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6017.

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<p>This thesis describes an interdisciplinary project, where the aim is to mimic the initial reactions in photosynthesis. In photosynthesis, the absorption of light is followed by the formation of charge-separated states. The energy stored in these charge-separated states is further used for the oxidation of water and reduction of carbon dioxide. In this thesis the photo-induced processes in a range of supramolecular complexes have been investigated with time resolved spectroscopic techniques. The complexes studied consist of three types of units; photosensitizers (P) capable of absorbing ligh
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19

Biswas, Debanjan. "A Modified Procedure for the Synthesis of Bis(phenylenedioxy)tetrathiafulvalene (BPDO-TTF): an Electron Donor for Charge Transfer Organic Complexes." [Johnson City, Tenn. : East Tennessee State University], 2002. http://etd-submit.etsu.edu/etd/theses/available/etd-0710102-123535/restricted/BixwasD073102.pdf.

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20

D'Alessandro, Deanna Michelle. "Stereochemical effects on intervalence charge transfer /." 2005. http://eprints.jcu.edu.au/1289.

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21

Zilic, Elvis, University of Western Sydney, College of Health and Science, and School of Natural Sciences. "Radiation curing and grafting of charge transfer complexes." 2008. http://handle.uws.edu.au:8081/1959.7/19385.

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Charge transfer (CT) complexes have been used in a number of radiation polymerisation processes including grafting and curing. The complexes studied include donor (D) monomers like vinyl ethers and vinyl acetate (VA) with acceptor (A) monomers such as maleic anhydride (MA). Both UV and EB have been utilised as radiation sources. The complexes are directly grafted to these substrates in the presence of radiation. The complexes yield novel copolymers when radiation cured with concurrent grafting improving the properties of the finished product. The term cure grafting has been proposed for this c
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22

Mecker, Christoph J. "The synthesis of advanced "special pair" models for the photosynthetic reaction centre /." 2000. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20011128.150754/index.html.

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23

Pandey, Ravindra. "Probing The Equilibrium Geometry Of Weakly Interacting Systems In Solution By Hyper-Rayleigh Scattering." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2365.

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Under the electric dipole approximation, second harmonic of the incident light is scattered by a collection of randomly oriented molecular dipoles in solution due to instantaneous orientational fluctuation which is directional. If two such dipoles are correlated in space through intermolecular or other interactions, the intensity of the second harmonic scattered light (SHSL) will be related to the extent of such interactions. If two dipoles are arranged in a particular geometry by design, the geometry will determine the intensity of the SHSL. If a molecule has no dipole moment, the intensity o
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24

Pandey, Ravindra. "Probing The Equilibrium Geometry Of Weakly Interacting Systems In Solution By Hyper-Rayleigh Scattering." Thesis, 2011. http://hdl.handle.net/2005/2365.

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Under the electric dipole approximation, second harmonic of the incident light is scattered by a collection of randomly oriented molecular dipoles in solution due to instantaneous orientational fluctuation which is directional. If two such dipoles are correlated in space through intermolecular or other interactions, the intensity of the second harmonic scattered light (SHSL) will be related to the extent of such interactions. If two dipoles are arranged in a particular geometry by design, the geometry will determine the intensity of the SHSL. If a molecule has no dipole moment, the intensity o
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25

Alsulami, Qana. "Ultrafast Photoinduced Electron Transfer in Bimolecular Donor-Acceptor Systems." Diss., 2016. http://hdl.handle.net/10754/621960.

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The efficiency of photoconversion systems, such as organic photovoltaic (OPV) cells, is largely controlled by a series of fundamental photophysical processes occurring at the interface before carrier collection. A profound understanding of ultrafast interfacial charge transfer (CT), charge separation (CS), and charge recombination (CR) is the key determinant to improving the overall performances of photovoltaic devices. The discussion in this dissertation primarily focuses on the relevant parameters that are involved in photon absorption, exciton separation, carrier transport, carrier recombin
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26

Huang, Chi-Ling, and 黃芝綾. "Study of Charge Transfer in Photoinduced Electron Transfer Dialkylsilylene-Spaced Donor-Acceptor Oligomers with Time-Correlated Single Photon Counting." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/79795665430231274428.

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碩士<br>國立清華大學<br>化學系<br>103<br>We used time-correlated single photon counting to investigate two photoinduced electron transfer dialkylsilylene-spaced donor-acceptor oligomers DA and DAD. The aniline is the electron Donor (D), trans-stilbene is the electron Acceptor (A) and SiMe2 as a spacer. We excited DA and DAD with a 266 nm laser beam. In non-polar solvents only the locally excited State (LE state) emits.The observed lifetimes, arranged from short to long are assigned to, the isomerization lifetime of trans-stilbene (τi) around 80-150 ps and the acceptor and donor fluorescence lifetime (τ0)
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27

Bheemaraju, Amarnath. "Effect of side chains on organic donor (D) and acceptor (A) complexes and photophysical properties of D-A dyads." 2011. https://scholarworks.umass.edu/dissertations/AAI3482586.

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This dissertation aims to understand the effect of incompatible side chains on the complexes of π-conjugated electron-rich donors and electron-deficient acceptors in solution. The role of incompatible side chains were studied in simple mixtures of organic donor and acceptor molecules that form donor-acceptor complexes. The incompatible branched and linear alkane side chains on the acceptor and donor respectively prevented complex formation between naphthalene diimide acceptor and naphthalene ether donor. However, the incompatible hydrocarbon-fluorocarbon and polar-non polar side chain pairs di
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28

"A Modified Procedure for the Synthesis of Bis(phenylenedioxy)tetrathiafulvalene (BPDO-TTF): An Electron Donor for Charge Transfer Organic Complexes." East Tennessee State University, 2002. http://etd-submit.etsu.edu/etd/theses/available/etd-0710102-123535/.

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29

Warzecha, Tomáš. "Syntéza pi-elektronových oligomerů a studium jejich vlastností." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-310422.

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The pi-electron oligomers: Their synthesis and properties This diploma thesis is focused on the synthesis of p-oligophenyleneethynylene rods (dimer and trimer) containing laterally attached naphtalenediimide units as electron acceptor groups. These functionalised short oligomers are intended to serve as model oligodentate acceptors in the study on multiple interactions with electron rich molecules. The oligomers were assembled from building blocks such as aryl iodides and aryl alkynes bearing a naphthalenediimide unit. The functionalised monomers were combined in a stepwise way by using Sonoga
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