Radiationless transitions in aromatic molecules with nonbonding electrons: Role of vibronically active outhyphen;ofhyphen;plane modes

摘要

By virtue of their large frequency change and equilibrium displacement, the vibronically active outhyphen;ofhyphen;plane bending modes are argued to be important accepting modes for radiationless transitions of aromatic molecules with nonbonding electrons. The conclusion is shown to be consistent with the position dependence of the deuterium isotope effect inT1(pgr;pgr;ast;) rarr;S0radiationless transitions of nitrogenhyphen;heterocyclic and aromatic carbonyl compounds.