| abstract |
Photochromic compound is provided, its can be pyrans,n piperazine or fulgide.This photochromic compound has the substituting group Q that at least one is connected to it, and each Q is-N independentlyn 3 ,-CN ,-COOR ' ,-CCR ' ,-C (R ') C (R ') R ' ,-OCOR ' ,-OCOOR ' ,-SR ' ,-OS0n 2 r " '; and/or CON (R ') R '; wherein each R ' be hydrogen, replacement or the non-substituted alkyl with 1-8 carbon atom; the non-substituted or aryl that replaces; have alkenyl or the alkynyl of the non-substituted of 2-18 carbon atom or replacement, wherein this substituting group is halogen or hydroxyl and R " ' be CFn 3 or there is the perfluoroalkyl of 2-18 carbon atom.The number of integral part Q, position and characteristic depend on the structure of this photochromic compound. |