Patent ID: 8617772

Claim:
A hologram recording material comprising: a radical photopolymerizable compound; and a matrix which is a dispersion medium for the radical photopolymerizable compound, wherein the radical photopolymerizable compound comprises a (meth)acrylamide derivative represented by formula (I): CH 2 â•CR 1 â€”CONR 2 â€”CH 2 â€”Oâ€”R 3 (I) wherein R 1 represents H, R 2 represents H, and R 3 represents an organic group having 3 or more carbon atoms in total, and R 3 has a polyethylene glycol unit represented by formula: â€”(CH 2 CH 2 O) n â€” where n represents a number of repeating units of ethylene oxide, wherein the (meth)acrylamide derivative represented by the formula (I) causes a cleavage reaction to yield a molecule CH 2 â•CR 1 â€”CONR 2 CH 2 OH and a molecule HOR 3 at a time of light exposure for hologram recording and/or postcure, thereby increasing a free volume, wherein the matrix is an organometallic matrix formed from a matrix-forming material comprising at least one of a metal alkoxide compound and an oligomer thereof.