화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.297, 155-160, 1997
The Effect of Substituents on the Ring-Closure Reaction of Photoactivated Diarylnaphthopyrans
A kinetic study of a few photochromic diarylnaphthopyrans is reported. Upon exposure to ultraviolet radiation, the diarylnaphthopyran derivatives are transformed into open chain, colored forms, which undergo ring closure into the colorless pyran forms. The rate of the ring closure has been determined for a few diarylnaphthopyrans. The effect of substituents on this reaction is briefly investigated.