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Photoinduced electron transfer in rigidly linked dimethoxynapthalene-N-methylpyridinium donor-acceptor molecules

✍ Scribed by Andrew H.A. Clayton; Kenneth P. Ghiggino; Gerard J. Wilson; Peter J. Keyte; Michael N. Paddon-Row

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 316 KB
Volume: 195
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(92)86144-7

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✦ Synopsis

Photoinduced electron transfer (ET) is studied in a series of novel molecules containing a dimethoxynaphthalene (DMN) donor and either a pyridine (P) or N-methylpyridinium (P-Me + ) acceptor covalently linked via a rigid norbornalogous bridge (n sigma bonds in length). ET rates of the order of l0 ~° s -~ were measured for the DMN-n-P-Me + series (n=4, 6), while no appreciable ET was observed for the DMN-n-P compound. Electronic and nuclear factors are discussed and the results rationalized in terms of Marcus-Hush and non-adiabatic ET theories.

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