Synthesis and photochromic properties of thiosemicarbazide and thiocarbazate derivatives of dithienylperfluorocyclopentene

A number of new thiosemicarbazide and thiocarbazate derivatives of dithienylperfluorocyclopentene have been synthesized. Spectral-kinetic study of photochemical transformations of these compounds was performed. All the compounds obtained exhibit photochromic properties. Dependencies of spectral characteristics of two thermally stable forms and kinetic properties of photocoloration and photodegradation processes from the nature of substituents affecting the conjugated bonds length in the molecules were found.