Interhyphen; and Intramolecular Energy Transfer Processes. I. Nitrohyphen;Compounds and Hydrocarbons

摘要

The addition compounds of aromatic nitrohyphen;compounds and hydrocarbons fluoresce appreciably only if the hydrocarbon component itself has a possible transition lying in the region where the nitrohyphen;complex might be expected from its absorption to emit. The resulting emission spectrum is very similar to that of the hydrocarbon component but much more strongly allowed. This is attributed to the breaking down of theSlarr;Tselection rule as the complex dissociates.