CPC C07C 271/48 (2013.01) [C07C 69/54 (2013.01); C07C 323/62 (2013.01); G03F 7/025 (2013.01); G03F 7/027 (2013.01); G03H 1/0248 (2013.01); G03H 2001/0264 (2013.01); G03H 2260/12 (2013.01)] | 7 Claims |
1. A recording material for writing a volume Bragg grating, the material comprising a transparent support, a polyurethane matrix, and a photopolymerizable imaging precursor compound of Formula II(b):
wherein in Formula II(b):
at least one of R1 and R2 comprises a group selected from
at least one of R1 and R2 comprises a polymerizable or crosslinkable group selected from optionally substituted alkenyl, optionally substituted cycloalkenyl, optionally substituted alkynyl, optionally substituted acrylate, optionally substituted methacrylate, optionally substituted styrene, optionally substituted epoxide, optionally substituted thiirane, optionally substituted glycidyl, optionally substituted lactone, optionally substituted lactam, and optionally substituted carbonate.
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