| abstract |
A photochromic compound is provided. A photochromic compound, which may be pyran, oxazine or fulgide, is provided. The photochromic compound has at least one substituent Q attached thereto, each Q is independently, -N 3, -CN, -COOR ' , - CCR', - C (R ') C (R') R ′, —OCOR ′, —OCOOR ′, —SR ′, —OSO 2 R ′ ″ and / or —CON (R ′) R ′, wherein each R ′ is hydrogen, 1 to 18 An unsubstituted or substituted alkyl group having 2 carbon atoms, an unsubstituted or substituted aryl group, an unsubstituted or substituted alkene or alkyne group having 2 to 18 carbon atoms, wherein the substituent is halo or hydroxyl Yes, R ″ ′ is —CF 3 , or a perfluorinated alkyl group having 2 to 18 carbon atoms. The number, position, and type of component Q depend on the structure of the photochromic compound. [Selection figure] None |