Npm. Huck et Bl. Feringa, DUAL-MODE PHOTOSWITCHING OF LUMINESCENCE, Journal of the Chemical Society, Chemical Communications, (11), 1995, pp. 1095-1096
The fluorescence and chirality of photoswitchable inherently dissymmet
ric alkenes cis 1 and aphtho[2,1-b]thiopyran-1'-ylidene)-9H-thioxanthe
ne 2 are reversibly modulated by irradiation whereas photoresponsive e
ffects and emission are regulated by reversible protonation.