Photochromism of a protonated 5-dimethylaminoindolylfulgide: a model of a non-destructive readout for a photon mode optical memory

Abstract
The 5-dimethylaminoindolylfulgide–trichloroacetic acid (1 : 1.4) system in toluene was found to constitute a photochromic system having a non-destructive readout ability applicable to rewritable photon mode optical memories.