Patent ID: 7125930
Filing Date: 2006-10-24
Classification: C09K,H01L

Abstract:
1. A block copolymer comprising two or more blocks and having fluorescence in the solid state, in each of the blocks, one or more kinds of repeating unit are bonded through conjugated bonds, and the polystyrene reduced number average molecular weight of at least one block is 1×10 3 to 1×10 8 , wherein the block copolymer is represented by general formula (1a) or (1b) (wherein, A and C represent blocks which may be the same or different; 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 5 nm or more than the fluorescence peak wavelengths shown by either a thin film of the polymer solely composed of block A, or a thin film of the polymer solely composed of block C), (wherein, A and C represent blocks which are mutually different, the fluorescence peak wavelength shown by a thin film of the polymer represented by general formula (1b) is longer by 5 nm or more than the fluorescence peak wavelength shown by a thin film of the polymer solely composed of block A), wherein at least one of A and C which represent blocks in the above formula (1a) or (1b) has one or more kinds of the repeating unit represented by the below formula (3),  (wherein, Ar  (wherein, Ar  (wherein, Ar  (wherein, Ar  (wherein, Ar  (wherein, Ar