OPTICAL 3D MEMORY COMPRISING A BLOCK COPOLYMER CONTAINING A PHOTOACTIVE MONOMER HAVING A PHOTOISOMERABLE GROUP
申请人:Le Crom Christophe
公开号:US20100119761A1
公开(公告)日:2010-05-13
The present invention relates to a block copolymer comprising: at least a bloc A having a T
g
>−60° C., preferably a T
g
>0° C., and most preferably >60°B comprising at least one photoactive monomer having a photoisomerable chromophore. The photoactive monomer having the formula (I), wherein X is H or CH
3
—; G is —O—C(═O)—, —C(═O)—O—, a phenyl group, substituted or un-substituted, or —NR—C(═O)—, NR being linked to L and R is H or a C
1-C
10
alkyl group; L is a spacer group; CR is a photoisomerable chromophore. The block copolymer provides a 3D optical memory. The invention also relates to this optical 3D memory.