Chromophores for photochromic compositions useful for three dimensional display applications

A chromophore represented by formula (II):

• wherein Ben is
• wherein:
• A1 is optionally substituted alkyl, optionally substituted alkenyl, optionally substituted heteroalkyl, or optionally substituted carbonyl;
• A2 is —H, —F, or —CF3;
• X1 is CR1 or N, X2 is CR2 or N, X3 is CR3 or N, X4 is CR4 or N, provided that at least one of X1-X4 is N;
• R1-R8 are each independently hydrogen, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted heteroalkyl, optionally substituted amido, optionally substituted alkoxy, optionally substituted carbonyl, and optionally substituted carboxy, optionally substituted aryloxy, optionally substituted acyloxy, optionally substituted ketone, optionally substituted ester, optionally substituted ether, —F, —CN, or —CF3, provided that at least one of R5-R8 is not hydrogen.