COMPOSITION AND LIGHT-EMITTING ELEMENT USING SAME

Title:

COMPOSITION AND LIGHT-EMITTING ELEMENT USING SAME

Document Type and Number:

WIPO Patent Application WO/2016/125560

Kind Code:

A1

Abstract:

Provided is a composition useful in the manufacture of a light-emitting element having a low drive voltage. The composition comprises a phosphorescent compound represented by formula (1) and a phosphorescent compound represented by formula (2). (In formula (1), M1 represents an iridium atom or the like; n1 represents an integer equal to or greater than 1; n2 is an integer equal to or greater than 0; E1 and E2 represent a carbon atom or the like; ring R1 represents a five-membered aromatic heterocycle; ring R2 represents an aromatic hydrocarbon ring or the like; and A1-G1-A2 represents an anionic bidentate ligand; provided that at least one ring selected from the group consisting of ring R1 and ring R2 has a specific aryl group.) (In formula (2), M2 represents an iridium atom or the like; n3 is an integer equal to or greater than 1; n4 represents an integer equal to or greater than 0; E4 represents a carbon atom or the like; ring L1 represents a six-membered aromatic heterocycle; ring L2 represents an aromatic hydrocarbon ring or the like; and A3-G2-A4 represents an anionic bidentate ligand; provided that at least one ring selected from the group consisting of ring L1 and ring L2 has a specific aryl group.)

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Inventors:

SASADA TOSHIAKI (JP)
SAITO TAKAKAZU (JP)

Application Number:

PCT/JP2016/051070

Publication Date:

August 11, 2016

Filing Date:

January 15, 2016

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)

International Classes:

C09K11/06; C07F15/00; H01L51/50

Domestic Patent References:

WO2015008851A1	2015-01-22
WO2014023377A2	2014-02-13
WO2013161739A1	2013-10-31
WO2011090535A1	2011-07-28

Foreign References:

US20120292600A1	2012-11-22
JP2014075344A	2014-04-24

Other References:

MARAPPAN VELUSAMY ET AL., SYNTHESIS, STRUCTURE AND ELECTROLUMINESCENT PROPERTIES OF CYCLOMETALATED IRIDIUM COMPLEXES POSSESSING STERICALLY HINDERED LIGANDS, 2007, pages 3025 - 3034, XP002490863
See also references of EP 3235891A4

Attorney, Agent or Firm:

NAKAYAMA, Tohru et al. (JP)
Nakayama 亨 (JP)

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