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Academic literature on the topic 'Rehm-Weller equation'
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Journal articles on the topic "Rehm-Weller equation"
Huang, Heyong, Jiahong Zhou, Yan Zhou, Yanhuai Zhou, and Yuying Feng. "Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2." International Journal of Photoenergy 2010 (2010): 1–5. http://dx.doi.org/10.1155/2010/547135.
Full textNagarajan, N., G. Paramaguru, G. Vanitha, and R. Renganathan. "Photosensitization of Colloidal SnO2Semiconductor Nanoparticles with Xanthene Dyes." Journal of Chemistry 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/585920.
Full textOSAKI, Toshihiko, Yutaka TAI, Masato TAZAWA, Sakae TANEMURA, Katsuya ISHIGURO, and Yasuhiko SAWAKI. "Electron Transfer Reaction to Triplet Excited State of Fullerenes in Solution. Comparison with the Rehm-Weller Equation." Journal of the Spectroscopical Society of Japan 42, no. 6 (1993): 379–84. http://dx.doi.org/10.5111/bunkou.42.379.
Full textDufresne, Stéphane, Thomas Skalski, and W. G. Skene. "Insights into the effect of ketylimine, aldimine, and vinylene group attachment and regiosubstitution on the fluorescence deactivation of fluorene." Canadian Journal of Chemistry 89, no. 2 (2011): 173–80. http://dx.doi.org/10.1139/v10-089.
Full textCaronna, Tullio, Sergio Morrocchi, and Bruno M. Vittimberga. "Importance of acidity on the energetically unfavorable electron-transfer reaction. An extension of the Rehm-Weller equation. Photoreaction of triplet 2,4-pyridinedicarbonitrile with 2-propanol." Journal of the American Chemical Society 108, no. 9 (1986): 2205–8. http://dx.doi.org/10.1021/ja00269a013.
Full textCARONNA, T., S. MORROCCHI, and B. M. VITTIMBERGA. "ChemInform Abstract: Importance of Acidity on an Energetically Unfavorable Electron-Transfer Reaction - an Extension of the Rehm-Weller Equation. Photoreaction of Triplet 2,4-Pyridinedicarbonitrile with 2-Propanol." Chemischer Informationsdienst 17, no. 34 (1986). http://dx.doi.org/10.1002/chin.198634048.
Full textDissertations / Theses on the topic "Rehm-Weller equation"
Narayanan, Madhavan. "Study of photoinduced electron transfer in fluorescent nucleobase analogues (FBAs) and DNA photolyase." Diss., Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/119151.
Full textPh.D.
Photoinduced electron transfer (PET) plays a crucial role in a wide array of biological pathways. These electron transfer reactions happen from or to the excited state of a chromophore upon absorption of light. Hence understanding the properties of excited states is necessary in elucidating the details of such pathways. The work presented in this thesis deals with PET in two systems: Fluorescent Nucleobase Analogues (FBAs) and DNA photolyase. The introductory chapter (Chapter 1) presents some background information about the two systems and sets up the stage for the reasoning behind the problems addressed in this thesis. FBAs are fluorescent analogues of naturally occurring, weakly fluorescent native nucleic acid bases. When incorporated into single stranded (ss) or double stranded (ds) DNA, the FBA fluorescence is significantly quenched. PET has been implicated to be the cause for the observed quenching. Here we have presented our attempt to correlate the quenching behavior of free FBA: nucleic acid monophosphate (NMP) pairs with the free energies associated with excited state electron transfer delta GET. Based on the delta GET values, we have tried to assign the direction of electron transfer. The quenching behavior of the FBA:NMP pairs were studied through Stern-Volmer (SV) quenching and time-resolved fluorescence studies. The above described analysis has been applied on FBAs: 4-amino-6-methyl-8-(2'-deoxy-beta-D-ribofuranosyl)-7(8H)-pteridone (6MAP), 4-amino - 2, 6 - dimethyl - 8 - (2'-deoxy-beta-d-ribofuranosyl) -7(8H) - pteridone (DMAP), 3-methyl-8-(2'-deoxy-beta-D-ribofuranosyl) isoxanthopterin (3MI) and 6-Methyl-8-(2'-deoxy-β-D-ribofuranosyl) isoxanthopterin (6MI) (Chapter 3), 2-Aminopurine (2AP) (Chapter 4), 8-Vinyl Adenosine (8VA) (Chapter 5). The final part of this thesis (Chapter 6) is on understanding the mechanistic details of a DNA repair process that is due to photoinduced electron transfer in DNA photolyase, a flavoprotein. Before the electron reaches the damaged site in the DNA, the initial electron acceptor in this repair process has been speculated to be the adenine of the flavin adenine dinucleotide (FAD). We have tested this hypothesis by measuring and comparing the various kinetic parameters associated with this process by reconstituting into apo-photolyase the natural cofactor of photolyase (FAD) and an adenine modified flavin (Etheno FAD, epsilon FAD).
Temple University--Theses
Bourque, Alex N. "Photophysical Investigations of Thiophene Azomethine Derivatives." Thèse, 2009. http://hdl.handle.net/1866/3565.
Full textA series of sterically hindered thiophene-aniline azomethine dyads were prepared. The decay pathways that deactivate the singlet excited state were studied using UV-vis fluorescence and phosphorescence, laser flash photolysis and quantum calculations. Stern-Volmer relationships, derived from singlet and triplet state quenching experiments, showed that azomethines efficiently deactivate the singlet and triplet excited states of fluorophores with bimolecular kinetics. AM1 Semi-empirical quantum calculations examining the effect of bulky substituents on the bond rotational barriers demonstrate that bulky tert-butyl groups attached to the aniline moiety have less influence on the N-aryl bond rotation barrier than alkyl substitutions do on the thiophene-CH bond rotation barrier. Rehm-Weller calculations based on electrochemical potentials demonstrate that azomethines self-quench their excited states via fast and efficient intramolecular photoinduced electron transfer leading to complete fluorescence suppression. Metal complexes containing an azomethine ligand were also prepared. The ligand contains a hydroxyquinoline moiety linked with a thiophene ring. Photophysical investigations of the resulting metal complexes demonstrated significant bathochromic shifts in the absorbance and fluorescence spectra. Metal-ion sensing devices for water solutions were prepared by spin casting the ligand onto glass slides. The metal-ion sensor detected copper in water solutions through a bathochromic shift in the absorbance maximum.