Abstract
Abstract Previous studies on photooxidation of 9,10-diethoxyanthracene (DEA) with diphenyliodonium cation revealed dealkylation of DEA radical cation. Fluorescence, dealkylation quantum yield, and laser-flash transient absorption spectroscopic studies on DEA and its dimethoxy (DMA) and diisopropoxy (DIPA) analogs, probed solvent and substituent effects on this reaction. We reconsider our original inferences as to relative rates of dealkylation and back electron transfer; the results pose new questions, e.g., as to the role of orbital symmetry in controlling rate of back electron transfer.
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