| 摘要 |
PROBLEM TO BE SOLVED: To provide a block copolymer having fluorescence in a solid state, to provide a method for producing the same, to provide a polymeric fluorescent element using the same, and to provide a new polymeric fluorescent substance. SOLUTION: This block copolymer comprising two or more blocks, wherein in each of the blocks, one or more kinds of repeating units are bonded through conjugated bonds, and bonding between the blocks is made by junction unit having conjugated bond, and wherein the block copolymer is represented by general formula (1a) : - A-block-(B)-block-C- (1a) (wherein, A and C represent blocks ; B represents a junction unit having a conjugated bond; the fluorescence peak wavelength shown by a thin film of the polymer represented by general formula (1a) is longer by 5nm or more than the fluorescence peak wavelengths shown by either a thin film of the polymer solely composed of block A), and in the formula (1a), at least one of A and C representing the blocks has repeating units represented by general formula (2) [wherein, Ar<SB>1</SB>is an arylene group or the like; R<SB>1</SB>, R<SB>2</SB>are H, an alkyl group or the like; (n) is 0 or 1]. COPYRIGHT: (C)2008,JPO&INPIT
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