| abstract |
A novel photochromic compound is provided. The present invention relates to compounds represented by the following formulas (I) and (II), wherein ring A of formulas I and II can be, for example, an aryl group, and Q ′ and Q ′ ″ are each independently And a group such as halogen, —OH, —CN, amine group, amide group, carboxylic acid ester group, carboxylic acid group, alkenyl group, alkynyl group, carbonate group, sulfide group and sulfonic acid ester group. The present invention also relates to photochromic compositions and photochromic articles that include one or more photochromic compounds as represented by Formula II. [Selection figure] None |