| 摘要 |
The invention relates to a crosslinkable material containing a polymer onto which chromophores are laterally grafted, characterized in that each chromophore is within a polymer unit which corresponds to the following formula (I): <IMAGE> (I) in which: X represents a part of the polymer chain, A is a group -NO2, -CN, -C(CN)=C(CN)2 or -SO2R4, R4 being a C1 to C6 alkyl, D is a nitrogen, sulphur or oxygen atom, R1 is a hydrogen atom or a C1 to C6 alkyl if D is a nitrogen atom, or nothing if D is a sulphur or oxygen atom, R2 is a C1 to C6 aliphatic alkyl group, and E is a group chosen from -OH, -O-CO-(CH2)n-COOH, -O-W, -O-CO-R3O-W and -O-R3-O-W, n being an integer between 2 and 6, W being a photodimerizable group and R3 being a C1 to C6 alkyl, and the said material additionally containing complementary anchoring functional groups capable of attaching themselves to E during the crosslinking.
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