申请人:Chopra Anu
公开号:US20140155598A1
公开(公告)日:2014-06-05
Various photochromic materials are provided that are essentially free of polymerizable unsaturated groups, and comprise:
a) an indeno[2′,3′:3,4]naphtho[1,2-b]pyran; and
b) an electron-withdrawing, non-conjugating group bonded at the 11-position of the indeno[2′,3′:3,4]naphtho[1,2-b]pyran.
Alternative embodiments include various substituents at other positions of the indeno[2′,3′:3,4]naphtho[1,2-b]pyran.
提供了各种光致变色材料,基本上不含可聚合的不饱和基团,包括:a)一种吲哚并[2',3':3,4]萘并[1,2-b]吡喃;以及b)与吲哚并[2',3':3,4]萘并[1,2-b]吡喃的11位结合的电子吸引、非共轭基团。其他实施方式包括在吲哚并[2',3':3,4]萘并[1,2-b]吡喃的其他位置上的各种取代基。