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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.)

Inventors:
SASADA, Toshiaki (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
SAITO, Takakazu (LIMITED 6, Kitahara, Tsukuba-sh, Ibaraki 94, 〒3003294, JP)
Application Number:
JP2016/051070
Publication Date:
August 11, 2016
Filing Date:
January 15, 2016
Export Citation:
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Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED (27-1, Shinkawa 2-chome Chuo-k, Tokyo 60, 〒1048260, JP)
International Classes:
C09K11/06; C07F15/00; H01L51/50
Domestic Patent References:
WO2015008851A12015-01-22
WO2014023377A22014-02-13
WO2013161739A12013-10-31
WO2011090535A12011-07-28
Foreign References:
US20120292600A12012-11-22
JP2014075344A2014-04-24
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. (LIMITED 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, 〒5418550, JP)
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