Ⅰ. INTRODUCTION The reason that a great amount of interest has been showing in the intramolecular excited energy transfer (IEET) is the intimate relationship of the energy transfer direction with the chemical reactio...Ⅰ. INTRODUCTION The reason that a great amount of interest has been showing in the intramolecular excited energy transfer (IEET) is the intimate relationship of the energy transfer direction with the chemical reaction of excited species. Spiropyrans are well known photochromic compounds and the photochromic transformation is generally considered to involve a simple rupture of the C-O bond. The initial evidence supporting this mech-展开更多
文摘Ⅰ. INTRODUCTION The reason that a great amount of interest has been showing in the intramolecular excited energy transfer (IEET) is the intimate relationship of the energy transfer direction with the chemical reaction of excited species. Spiropyrans are well known photochromic compounds and the photochromic transformation is generally considered to involve a simple rupture of the C-O bond. The initial evidence supporting this mech-