CPC C09K 9/02 (2013.01) [C07F 7/0816 (2013.01); C09K 2211/1018 (2013.01); G02C 7/102 (2013.01)] | 5 Claims |
1. A photochromic compound represented by the following Formula (IIb),
wherein,
R1 independently for each n, and R2 independently for each m, are selected from the group consisting of,
hydrogen;
linear or branched C1-C6 alkyl;
substituted or unsubstituted C3-C6 cycloalkyl;
linear or branched C1-C8 perhaloalkyl;
—O—R10′, and
substituted or unsubstituted phenyl;
wherein each cycloalkyl substituent, and each phenyl substituent, is independently selected from the group consisting of at least one of linear or branched C1-C6 alkyl, —O—R10′, and combinations thereof, where each R10′ is independently as described as follows;
wherein each R10′, of —O—R10′, is hydrogen, or linear or branched C1-C6 alkyl;
M is Si or Ge;
R3 and R4 are each independently selected from the group consisting of, hydrogen; and linear or branched C1-C8 alkyl; and
B and B′ are in each case independently selected from the group consisting of,
unsubstituted phenyl,
phenyl substituted with linear or branched C1-C6 alkoxy,
phenyl substituted with linear or branched C1-C6 perhaloalkyl,
phenyl substituted with morpholino, and
phenyl substituted with piperidino.
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