| 摘要 |
An acenaphthene compound of the following formula (1), <IMAGE> (1) wherein Ar1 is an aryl group which may have a substituent; Ar2 is a phenylene, naphthylene, biphenylene or anthrylene group which may have a substituent; R1 is a hydrogen atom, a lower alkyl group or a lower alkoxy group; X is a hydrogen atom, an alkyl group which may have a substituent or an aryl group which may have a substituent; and Y is an aryl group which may have a substituent or a group of the formula (2), <IMAGE> (2) wherein R2 is a hydrogen atom, a lower alkyl group or a lower alkoxy group, R3 is a hydrogen atom, a halogen atom or a lower alkyl group, Z is a hydrogen atom or an aryl group which may have a substituent, and m and n are an integer of from 0 to 4.
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