Excited Doublet States of Electrochemically Generated Aromatic Imide and Diimide Radical Anions
Autor: | Mark P. Niemczyk, Walter A. Svec, Aaron S. Lukas, Michael R. Wasielewski, David Gosztola |
---|---|
Rok vydání: | 2000 |
Předmět: | |
Zdroj: | The Journal of Physical Chemistry A. 104:6545-6551 |
ISSN: | 1520-5215 1089-5639 |
Popis: | The radical anions of aromatic diimides have been implicated recently in a wide variety of photochemical electron transfer reactions. Photoexcitation of these radical anions produces powerfully reducing species. Yet, the properties of the π* excited doublet states of these organic radical anions remain obscure. The radical anions of three aromatic imides with increasingly larger π systems, N-(2,5-di-tert-butylphenyl)phthalimide, 1, N-(2,5-di-tert-butylphenyl)-1,8-naphthalimide, 2, and N-(2,5-di-tert-butylphenyl)perylene-3,4-dicarboximide, 3, as well as the three corresponding aromatic diimides, N,N‘-bis(2,5-di-tert-butylphenyl)pyromellitimide, 4a, N,N‘-bis(2,5-di-tert-butylphenyl)-naphthalene-1,8:4,5-tetracarboxydiimide, 5a, and N,N‘-bis(2,5-di-tert-butylphenyl)perylene-3,4:9,10-tetracarboxydiimide, 6, were produced by electrochemical reduction of the neutral molecules in an optically transparent thin layer electrochemical cell. The radical anions of these imides and diimides all exhibit intense visible a... |
Databáze: | OpenAIRE |
Externí odkaz: |