作者:Cristina I. Martins、Paulo J. Coelho、Luis M. Carvalho、Ana M. F. Oliveira-Campos、André Samat、Robert Guglielmetti
DOI:10.1002/hlca.200390057
日期:2003.3
The synthesis and the photochromic properties of new photochromic 6,7- and 7,8-benzoindene annellated benzopyrans are described. When compared to parent indeno-fused 2H-chromenes (2H-[1]benzopyrans), compounds 10 and 12 exhibit a significant bathochromic shift of maximum-absorption wavelength, an increase in the colorability, and similar fading rates.
描述了新的光致变色6,7-和7,8-苯并茚基环化的苯并吡喃的合成和光致变色性质。当与母体茚满稠合的2 H-色烯(2 H- [1]苯并吡喃)相比时,化合物10和12表现出最大吸收波长的显着红移,着色性的提高和相似的褪色率。