Block copolymer and polymeric luminescent element
AssigneeSumitomo Chemical Company, Limited
InventorsTakanobu Noguchi, Yoshiaki Tsubata, Shuji Doi
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Abstract
A block copolymer comprising two or more blocks and having fluorescence in the solid state, wherein blocks thereof may be the same or different, and 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 the polystyrene reduced number average molecular weight of at least one block is 1×103 to 1×108.
Claims28
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 1×103 to 1×108, wherein the block copolymer is represented by general formula (1a) or (1b)
- -A-block-(B)-block-C- (1a)
- (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),
- -A-block-C- (1b)
- (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, Ar2 is a divalent aromatic amine group represented by the following general formula (4), R3 and R4 each independently represent a group selected from a hydrogen atom, an alkyl group, an aryl group, a monovalent heterocyclic compound group and a cyano group, and m is 0 or 1)
- (wherein, Ar3 and Ar5 are each independently an arylene group, an aromatic compound group represented by the following general formula (5), or a group having an aromatic amine skeleton represented by the following general formula (6), and Ar4 represents an aryl group, a monovalent heterocyclic compound group, or a group having an aromatic amine skeleton represented by the following general formula (7), or a group having an aromatic ethenylene skeleton represented by the following general formula (8);
- a ring may be formed between Ar3 and Ar4, between Ar4 and Ar5, or between Ar3 and Ar5)
- (wherein, Ar6 and Ar7 each independently represent an arylene group, R5 and R6 are the same group with those of R3 and R4 and 1 is 0 or 1)
- (wherein, Ar8 and Ar9 each independently represent an arylene group, and Ar10 represent an aryl group, a ring may be formed between Ar8 and Ar10, between Ar8 and Ar9, or between Ar9 and Ar10)
- (wherein, Ar11 represents an arylene group, R7 and R8 each independently represent the same group with those of R3 and R4, and a ring may be formed between Ar11 and R7, between Ar11 and R8, or between R7 and R8)
- (wherein, Ar12 and Ar13 each independently represent an arylene group, R9 and R10 each independently represent the same group with those of R3 and R4, and p is 0 or 1).
A process for producing a block copolymer, wherein an initial polymer having a group (Y1) on the molecular terminal, is obtained by reacting a monomer (I) having two reactive groups (X1, X2) in a molecule which can react mutually, with a monomer (II) having a reactive group (X3) which is reactive with the reactive groups (X1, X2) and a group (Y1) which is not reactive with the reactive groups (X1, X2) under a reaction condition at which said reactive groups (X1, X2) can react with X3 to form a linkage;
- and said initial polymer is reacted under a condition at which group (Y1) can mutually react to form linkage.
A process for producing a block copolymer, wherein an initial polymer having a group (Y1) on the molecular terminal, is obtained by reacting a monomer (I) having two reactive groups (X1, X2) in a molecule which can react mutually, with a monomer (II) having a reactive group (X3) which is reactive with the reactive groups (X1, X2) and a group (Y1) which is not reactive with the reactive groups (X1, X2) under a reaction condition at which said reactive groups (X1, X2) can react with X3 to form a linkage;
- and said initial polymer is reacted with a monomer (III) having two groups (Y2, Y3) in a molecule which is reactive with a group (Y1) to form a linkage under a reaction condition at which groups (Y2, Y3) can react with group (Y1) to form a linkage.
Dependencies are inferred from the claim text.