个人简介

B.S., 1973, University of Wisconsin at River Falls Ph.D., 1977, University of Wisconsin at Madison Postdoctoral Fellow, 1977-1979, Texas Christian University

研究领域

Physical Organic Chemistry

Organic Photochemistry is a multidisciplinary field that draws upon quantum mechanics, kinetics, spectroscopy, synthesis, and organic structure determination. Our specific interest and approach is to combine physical and theoretical concepts with structure reactivity correlations to design new electron-transfer sensitizers. The electrochemical (cyclic voltammetry) and photophysical (fluorescence, phosphorescence, laser flash photolysis) characteristics of these new sensitizers are determined and are then tested for their utility to promote organic electron transfer reactions. We are also interested in more applied uses of these new materials to mineralize organic pollutants and as components in supramolecular systems designed to enhance charge separation which is a fundamental challenge in the construction of artificial photosynthetic devices.

近期论文

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S. F. Nelsen, E. L. Clennan, L. Echegoyen, L. A. Grezzo, "Effects of Structure on the Ease of Electron Removal from o-Phenylene Diamines", J. Org. Chem. 43, 2621 (1978). DOI: 10.1021/jo00407a015 S. F. Nelsen, E. L. Clennan, D. H. Evans, "Low Temperature Cyclic Voltammetry. 3. Quantitative Comparison of Cyclic Voltammetry and Nuclear Magnetic Resonance as Methods for Conformational Equilibrium and Rate Constant Measurements", J. Am. Chem. Soc., 100, 4012 (1978). DOI: 10.1021/ja00481a005 S. F. Nelsen, E. L. Clennan, "Conformational Analysis of Bridgehead Diaza-Decalin Derivatives by 13C-Nuclear Magnetic Resonance", J. Am. Chem. Soc. 100, 4004 (1978). DOI: 10.1021/ja00481a004 S. F. Nelsen, L. Echegoyen, E. L. Clennan, D. H. Evans, D. H. Corrigan, "Low Temperature Cyclic Voltammetry II. Conformational Analysis of Cyclic Tetraalkylhydrazines", J. Am. Chem. Soc. 99, 1130 (1977). DOI: 10.1021/ja00446a026 S. F. Nelsen, G. R. Weisman, E. L. Clennan, V. E. Peacock, "13C-NMR Studies of 9-Methyl-9-azabicyclo[3.3.1]nonane and Related Compounds", J. Am. Chem. Soc. 98, 6893 (1976). DOI: 10.1021/ja00438a022 J. W. Pavlik and E. L. Clennan, "Photochemical Rearrangements of Pyrylium Cations", J. Am. Chem. Soc. 95, 1697 (1973). DOI: 10.1021/ja00786a076 Edward L. Clennan, Will Welch, Tamer T. El-Idreesy, Navomoney Arulsamy, "Regiochemistry and substituent effects on pyrylogen and thiopyrylogen stability and electronic character." Can. J. Chem. In Press (2014). DOI: 10.1139/cjc-2014-0338 Xiaoping Zhang, Edward L. Clennan, Navamoney Arulsamy, "Photophysical and Electrochemical Characterization of a Helical Viologen, N, N’-Dimethyl-5,10-diaza[5]helicene.” Org. Lett. 16(17), 4610-4613 (2014). DOI: 10.1021/ol502180y Edward L. Clennan, “1,2-Dioxatrisulfane (thiaperoxide) intermediates in type I and II photooxygenation reactions”, in Patai's “The Chemistry of Peroxides”, ed. I. Marek, John Wiley & Sons Ltd: Chichester, UK, 2014. DOI: 10.1002/9780470682531.pat0876 Edward L. Clennan, “Synthesis, Characterization, Photophysics, and Photochemistry of Pyrylogen Electron Transfer Sensitizers, Photochem. Photobiol. 90, 344-357 (2014). DOI: 10.1111/php.12174 Edward L. Clennan, 2012, “Photooxygenations of Sulfur Compounds.”, in CRC Handbook of Organic Photochemistry and Photobiology, 3rd edition, Eds. M. Oelgemoeller, A. Greisbeck, F. Ghetti, Taylor and Francis, Chapter 32, pp. 789-808. ISBN: 1439899339 Tamer T. El-Idreesy, Edward L. Clennan, “Hydrolytic Stability of N-Methyl-2,6-Dimesityl-4,4’-Pyrylogen bis(Tetrafluoroborate).” J. Org. Chem. 76, 7175-7179 (2011). DOI: 10.1021/jo201180j S. Ciorba, Edward L. Clennan, U. Mazzucato, A. Spalletti, “Induced phosphorescence of some aza- and thio-stilbenes embedded in Thallium-exchanged zeolites.” J. Luminescence, 131, 1193-1197 (2011). DOI: 10.1016/j.jlumin.2011.02.017 Edward L. Clennan, Tamer T. El-Idreesy, “Computational and Experimental Evidence for the First Direct Spectroscopic Detection of the Pyrylogen Neutral Redox Partner.” Photochem. Photobiol. Sci. 9, 796-800 (2010). DOI: 10.1039/C0PP00068J Tamer T. El-Idreesy, Edward L. Clennan, “A new free and immobilized pyrylogen electron transfer sensitizer.” Tetrahedron Lett. 51, 1249-1251 (2010). DOI: 10.1016/j.tetlet.2009.12.102 Ajaya Kumar Sankara Warrier, Edward L. Clennan, “Synthesis, structural, electrochemical, and photophysical properties of 4,2’-thiopyrylogens-a novel class of sensitizers for photoinduced electron transfer reactions.” J. Phys. Org. Chem. 24, 22-28 (2011). DOI: 10.1002/poc.1697 Edward L. Clennan, Ajaya Kumar Sankara Warrier, “Synthesis, photophysical, and electrochemical properties of the sulfur analogues of the new 4,4’-pyrylogen electron-transfer sensitizers” J. Sulfur Chem. 30, 212-224 (2009).DOI: 10.1080/17415990902774228 Edward L. Clennan, Ajaya Kumar Sankara Warrier, “The Syntheses and Properties of the New Electron Transfer Sensitizers; 4,2’-Pyrylogens.” Org. Lett. 11, 685-688 (2009). DOI: 10.1021/ol802763r Ajaya Kumar Sankara Warrier, Edward L. Clennan, “ N-Methyl-2,6-di-tert-butyl-4,4’-pyrylogen. A dialkyl example of a new class of electron transfer sensitizers. Arkivoc, (8), 95-111 (2009). ISSN: 1551-7012 NV-3557GP Chen Liao, Shao-Zhong Zhang, Eric Block, Edward L. Clennan “Photooxygenation of 1,5-Thiaselenocane.” J. Org. Chem. 73, 8587-8590 (2008). DOI: 10.1021/jo801429b