Nature of the Low-Temperature Emission from 9-Nitroanthracene

Article abstract of DOI:10.1021/j150613a019

A luminescence study of 9-nitroanthracene indicates that its emission from EPA glasses at 77 K is not molecular phosphorescence but anthraquinon phosphorescence formed via an efficient photochemical reaction.The quantum yield for the reaction at 77 K in ethyl alcohol is estimated to be 0.7.Evidence that 9-nitroanthracene does not phosphoresce was corroborated by forming 1:1 EDA complex with boron trichloride, which results in a stable complex that inhibits its molecular photodecomposition.