Structure and photochromism of 2-(N-acyl-N-arylaminomethylene)benzo[b]thiophen-3(2H)-ones
作者:A. D. Dubonosov、V. P. Rybalkin、Ya. Yu. Vorob’eva、V. A. Bren’、V. I. Minkin、S. M. Aldoshin、V. V. Tkachev、A. V. Tsukanov
DOI:10.1007/s11172-005-0108-8
日期:2004.10
It was shown by electron absorption spectroscopy and X-ray diffraction analysis that steric strains in photochromic 2-(N-acyl-N-arylaminomethylene) benzo[b]thiophen-3(2H)-one molecules ortho-substituted in the N-phenyl ring increase the quantum yield of the N→O photoinduced rearrangement in accord with an increase in the steric constant of the ortho-substituent.
电子吸收光谱和X射线衍射分析表明,光致变色的2-(N-酰基-N-芳基氨基亚甲基)苯并[b]噻吩-3(2H)-1分子在N-苯基邻位取代的空间位阻环增加了 N→O 光诱导重排的量子产率,这与邻位取代基的空间常数增加一致。