High molecular compound, method for producing same, and light-emitting element

Patent metadata

Field	Value
Publication number	US-9478744-B2
Application number	US-201113989987-A
Country	US
Kind code	B2
Filing date	Nov 28, 2011
Priority date	Nov 30, 2010
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A polymer compound is provided for achieving satisfactory brightness even at a low driving voltage when applied to a light-emitting device. A preferred embodiment includes multiple first groups and a block (A) having a structure in which the first groups are linked by a second group represented by formula (0-0), and includes at least one of a group represented by formula (0-1) or a group represented by formula (0-2) as the first group;

wherein Ar 0 represents an optionally substituted arylene group or divalent aromatic heterocyclic group having a structure different from the first group; n represents an average chain length of Ar 0 and equals 1.0 to 8.0; and X 11 to X 16 and X 21 to X 25 each represent a carbon atom or a nitrogen atom, where two or three of X 11 to X 16 are a nitrogen atom and three of X 21 to X 25 are a nitrogen atom.

First claim

The invention claimed is:

1. A polymer compound comprising a block (A) comprising a structure comprising two or more first groups and a second group represented by formula (0-0) linking the first groups, and
wherein the polymer compound comprises as the first groups at least one of a group represented by formula (0-1) and a group represented by formula (0-2);

wherein
in formula (0-0), Ar 0 represents an arylene group or a divalent aromatic heterocyclic group having a structure different from that of the first group and may have an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group as a substituent; n represents an average chain length in terms of Ar 0 and is a numerical value of 1.0 or more and 8.0 or less; and
in formulas (0-1) and (0-2), X 11 , X 12 , X 13 , X 14 , X 15 , X 16 , X 21 , X 22 , X 23 , X 24 and X 25 each independently represent a carbon atom or a nitrogen atom, where two or three of X 11 , X 12 , X 13 , X 14 , X 15 and X 16 are a nitrogen atom and three of X 21 , X 22 , X 23 , X 24 and X 25 are a nitrogen atom; and the group represented by formula (0-1) and the group represented by formula (0-2) may have an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group as a substituent, wherein the block (A) comprises multiple constitutional units represented by formula (0);

wherein
in formula (0), Z represents the group represented by formula (0-1) or the group represented by formula (0-2);
Ar 0a and Ar 0b each independently have the same definition as the Ar 0 and are each independently a group having a structure different from that of Z; when multiple Ar 0a and Ar 0b groups are present, the groups may be the same or different; and s 1 and s 2 each independently represent 1 or 2, further comprising: a block (B) having a structure different from that of the block (A),
wherein the block (B) is contained so that a value represented by expression (VII) becomes 0.5 or less;
[B]/[A]  (VII)

wherein
in expression (VII), [A] represents a mol % of the constitutional unit represented by formula (0) contained in the block (A); and [B] represents a mol % of the constitutional unit represented by formula (0) in the block (B).

2. The polymer compound according to claim 1 , wherein the n is a numerical value of 1.0 or more and 6.5 or less.

3. The polymer compound according to claim 2 , wherein the n is a numerical value of 1.5 or more and 5.0 or less.

4. The polymer compound according to claim 1 , wherein the Ar 0a and Ar 0b are each independently at least one group selected from the group consisting of a phenylene group, a naphthalene-diyl group, a fluorene-diyl group and a dihydrophenanthrene-diyl group.

5. The polymer compound according to claim 1 , comprising as the constitutional unit represented by formula (0) a constitutional unit represented by formula (2);

wherein
in formula (2), Ar 2a and Ar 2b have the same definition as the Ar 0a and the Ar 0b , respectively, where Ar 2a and Ar 2b are groups different from a 1,3,5-triazine-diyl group; Ar 2c represents an aryl group or a monovalent aromatic heterocyclic group, and may have an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group as a substituent; when multiple Ar 2a and Ar 2b groups are present, the groups may be the same or different; and t 1 and t 2 each independently represent 1 or 2.

6. The polymer compound according to claim 5 , wherein the Ar 2a and Ar 2b are each independently at least one group selected from the group consisting of a phenylene group, a naphthalene-diyl group, a fluorene-diyl group and a dihydrophenanthrene-diyl group.

7. The polymer compound according to claim 5 , wherein the block (A) comprises the constitutional unit represented by formula (2) and a constitutional unit represented by formula (I);
Ar 1   (I)

wherein
in formula (1), Ar 1 represents an arylene group or a divalent aromatic heterocyclic group, and may have an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group as a substituent.

8. The polymer compound according to claim 7 , comprising as the constitutional unit represented by formula (I) at least one constitutional unit selected from the group consisting of a constitutional unit represented by formula (3); and a constitutional unit represented by formula (4), which is different from the constitutional unit represented by formula (2) and the constitutional unit represented by formula (3);

wherein
in formula (3), Ar 3a represents an arylene group or a divalent aromatic heterocyclic group, and may have an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group as a substituent; R 3a is an alkyl group, an aryl group or a monovalent aromatic heterocyclic group and is a group substituted at a substitution site neighboring a site forming a bonding to another constitutional unit in Ar 3a ; when multiple R 3a groups are present, the groups may be the same or different; g is an integer of 1 to 4; and
in formula (4), Ar 4a represents an arylene group or a divalent aromatic heterocyclic group, and may have an alkyl group, an aryl group, a monovalent aromatic heterocyclic group, an alkoxy group, an aryloxy group, an aralkyl group, an arylalkoxy group, a substituted amino group, a substituted carbonyl group, a substituted carboxyl group, a fluorine atom or a cyano group as a substituent; when multiple Ar 4a groups are present, the groups may be the same or different; and k is an integer of 1 to 3.

9. The polymer compound according to claim 8 , wherein the constitutional units represented by formula (3) are present adjacent to both sides of the constitutional unit represented by formula (2).

10. The polymer compound according to claim 8 , wherein the constitutional units represented by formula (2) are present adjacent to both sides of the constitutional unit represented by formula (3) or both sides of the constitutional unit represented by formula (4).

11. The polymer compound according to claim 8 , comprising as the constitutional unit represented by formula (3) at least one constitutional unit selected from the group consisting of the constitutional unit represented by formula (1) and a constitutional unit represen

Assignees

• Goto Osamu
• Kako Fumiko
• Soga Masayuki
• Ohuchi Kazuei
• Sumitomo Chemical Co

Inventors

• Goto Osamu
• Kako Fumiko
• Soga Masayuki
• Ohuchi Kazuei

Classifications

• H10K50/10

  OLEDs or polymer light-emitting diodes [PLED] · CPC title

• H10K85/151

  Copolymers · CPC title

• C08G61/12 Primary

  Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule · CPC title

• C08G2261/3221

  containing one or more nitrogen atoms as the only heteroatom, e.g. pyrrole, pyridine or triazole · CPC title

• H01L51/0039

  Electricity · mapped topic