Abstract: A block copolymer includes an end group, a block that binds to the end group, and a block that does not bind to the end group. The block that does not bind to the end group contains at least one non-crosslinkable constitutional unit represented by the formula (X) and/or at least one non-crosslinkable constitutional unit represented by the formula (Z). At least one of formulas (i) XI>XII, (ii) ZI>ZII and (iii) XI+ZI>XII+ZII is satisfied when the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that does not bind to the end group are represented by XI and ZI, respectively, and the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that binds to the end group are represented by XII and ZII, respectively.

Abstract: A method of producing a polymer compound which is capable of improving yield while lowering the dispersity of the molecular weight is described.

Abstract: A light emitting device having excellent light emission efficiency contains a cathode, a first organic layer containing a compound having a cross-linkable group and a phosphorescent transition metal complex, a second organic layer containing a crosslinked body of the same compound as the compound having a cross-linkable group, and an anode in this order. The ratio of the compound having a cross-linkable group contained in the first organic layer is 2 to 10% by mass with respect to the total mass of the first organic layer. The compound having a cross-linkable group may be a compound having at least one cross-linkable group selected from cross-linkable groups represented by the formula (XL-1) to the formula (XL-19).

Abstract: A film for a light emitting device which is useful for producing a light emitting device having excellent luminance life is described. The film contains a cross-linked body of a crosslinkable material having a crosslinking group in an amount of 0.015 mmol/g to 0.05 mmol/g. A light emitting device containing the film is also described. A method for analyzing a crosslinking group in a film for a light emitting device involves: (1) a step of swelling the above-described film for a light emitting device with a solvent, and (2) a step of measuring a crosslinking group of the swollen film for a light emitting device using nuclear magnetic resonance spectroscopy.

Abstract: A film for a light emitting device which is useful for producing a light emitting device having excellent luminance life is described. The film contains a cross-linked body of a crosslinkable material having a crosslinking group in an amount of 0.015 mmol/g to 0.05 mmol/g. A light emitting device containing the film is also described. A method for analyzing a crosslinking group in a film for a light emitting device involves: (1) a step of swelling the above-described film for a light emitting device with a solvent, and (2) a step of measuring a crosslinking group of the swollen film for a light emitting device using nuclear magnetic resonance spectroscopy.

Abstract: A block copolymer includes an end group, a block that binds to the end group, and a block that does not bind to the end group. The block that does not bind to the end group contains at least one non-crosslinkable constitutional unit represented by the formula (X) and/or at least one non-crosslinkable constitutional unit represented by the formula (Z). At least one of formulas (i) XI>XII, (ii) ZI>ZII and (iii) XI+ZI>XII+ZII is satisfied when the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that does not bind to the end group are represented by XI and ZI, respectively, and the total number of non-crosslinkable constitutional units represented by formulas (X) and (Z) in the block that binds to the end group are represented by XII and ZII, respectively.

Abstract: A polymer compound having a constitutional unit represented by formula (1A) or formula (1B) and a constitutional unit represented by formula (2A) or formula (2B) is provided, wherein each of XM and XN is a crosslinkable group; and RAm, RBm, Ar1m to Ar5m, LM, ArM, m1 to m6, RAn, RBn, Ar1n to Ar5n, ArLn, LN, ArN, n1 to n6, and Ln are as defined in the specification. The polymer compound is excellent in crosslinkability and hole transportability.

Abstract: A polymer compound having an excellent crosslinking ability is provided. The polymer compound has at least one terminal constitutional unit represented by the formula (1) and a constitutional unit represented by the formula (2): In the constitutional unit represented by formula (1), mT represents an integer of 0 to 5, nT represents an integer of 1 to 4, cT represents an integer of 0 to 1, QT represents a crosslinkable group, KT represents an alkylene group or the like and ArT represents an aromatic hydrocarbon group or the like. In the constitutional unit represented by formula (2), mA represents an integer of 0 to 5, n represents an integer of 1 to 4, Ar1 represents an aromatic hydrocarbon group or the like, KA represents an alkylene group or the like and Q1 represents a crosslinkable group.

Abstract: Provided is a polymer compound useful for production of a light emitting device excellent in external quantum yield. The polymer compound includes a constitutional unit represented by the formula (1): wherein a1 and a2 represent 0 or 1, ArA1 and ArA3 represent an arylene group or the like, and in each of ArA1 and ArA3 at least one atom adjacent to an atom forming a bond to the constitutional unit adjacent to the each of ArA1 and ArA3 has an alkyl group or the like as a substituent, ArA2 represents a phenylene group, ArA4 represents an arylene group or the like, RA1, RA2 and RA3 represent an aryl group or the like, and when a2 is 0, RA1 represents an aryl group in which two or more rings are condensed (the number of carbon atoms constituting the rings of the aryl group is 10 or more) or the like.

Abstract: A polymer compound having a constitutional unit represented by formula (1A) or formula (1B) and a constitutional unit represented by formula (2A) or formula (2B) is provided, wherein each of XM and XN is a crosslinkable group; and RAm, RBm, Ar1m to Ar5m, LM, ArM, m1 to m6, RAn, RBn, Ar1n to Ar5n, ArLn, LN, ArN, n1 to n6, and Ln are as defined in the specification. The polymer compound is excellent in crosslinkability and hole transportability.

Abstract: A polymer compound having an excellent crosslinking ability is provided. The polymer compound has at least one terminal constitutional unit represented by the formula (1) and a constitutional unit represented by the formula (2): In the constitutional unit represented by formula (1), mT represents an integer of 0 to 5, nT represents an integer of 1 to 4, cT represents an integer of 0 to 1, QT represents a crosslinkable group, KT represents an alkylene group or the like and ArT represents an aromatic hydrocarbon group or the like. In the constitutional unit represented by formula (2), mA represents an integer of 0 to 5, n represents an integer of 1 to 4, Ar1 represents an aromatic hydrocarbon group or the like, KA represents an alkylene group or the like and Q1 represents a crosslinkable group.

Abstract: Provided is a polymer compound useful for production of a light emitting device excellent in external quantum yield. The polymer compound includes a constitutional unit represented by the formula (1): wherein a1 and a2 represent 0 or 1, ArA1 and ArA3 represent an arylene group or the like, and in each of ArA1 and ArA3 at least one atom adjacent to an atom forming a bond to the constitutional unit adjacent to the each of ArA1 and ArA3 has an alkyl group or the like as a substituent, ArA2 represents a phenylene group, ArA4 represents an arylene group or the like, RA1, RA2 and RA3 represent an aryl group or the like, and when a2 is 0, RA1 represents an aryl group in which two or more rings are condensed (the number of carbon atoms constituting the rings of the aryl group is 10 or more) or the like.

Abstract: A polymer compound comprising a constitutional unit having a group represented by the formula (1): wherein Ring A1A and Ring R2A represent an aromatic hydrocarbon ring or a heterocyclic ring and these rings each optionally have a substituent, nA represents an integer of 0 to 5, nB represents an integer of 1 to 5, LA and LB represent an alkylene group, a cycloalkylene group, an arylene group, a divalent heterocyclic ring group, a group represented by —NR?—, an oxygen atom or a sulfur atom, and R? represents a hydrogen atom, an alkyl group or the like, and Q1 represents a crosslinkable group.

Abstract: A polymer compound comprising a constitutional unit having a group represented by the formula (1): wherein Ring A1A and Ring R2A represent an aromatic hydrocarbon ring or a heterocyclic ring and these rings each optionally have a substituent, nA represents an integer of 0 to 5, nB represents an integer of 1 to 5, LA and LB represent an alkylene group, a cycloalkylene group, an arylene group, a divalent heterocyclic ring group, a group represented by —NR?—, an oxygen atom or a sulfur atom, and R? represents a hydrogen atom, an alkyl group or the like, and Q1 represents a crosslinkable group.

Abstract: A polymer compound comprising a constituent unit represented by the formula (1?) and a constituent unit having a mono-valent cross-linkable group: wherein R1? to R4? represent an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a mono-valent heterocyclic group, R5 to R10 represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a mono-valent heterocyclic group, RA and RB represent a hydrogen atom, an alkyl group, an aryl group, a mono-valent heterocyclic group, and Ar1 and Ar2 represent an arylene group, a di-valent heterocyclic group.

Abstract: A polymer compound comprising a constituent unit represented by the formula (1?) and a constituent unit having a mono-valent cross-linkable group: [wherein R1? to R4? represent an alkyl group, an alkoxy group, an aryl group, an aryloxy group or a mono-valent heterocyclic group, R5 to R10 represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group or a mono-valent heterocyclic group, RA and RB represent a hydrogen atom, an alkyl group, an aryl group or a mono-valent heterocyclic group, and Ar1 and Ar2 represent an arylene group or a di-valent heterocyclic group.].