| 摘要 |
A polymer for use in an optical device comprising one or more regions, where the or each region comprises (i) a first structural unit having general formula I: where m=1 or 2 and which contains at least one substituent, and the at least one substituent is selected from the group consisting of an alkyl, alkoxy, aryl, aryloxy, heteroaryl and heteroaryloxy groups, each of which may be further substituted; and (ii) a second structural unit Ar selected from the group consisting of heteroaryl, triarylamine and/or 2,7-fluorenyl; such that where m=1 the or each region comprises a unit having general formula II: wherein, the at least one substituent has a molecular weight of less than 300.
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