Sumitomo Chemical Company, Limited

Hokkaido University

Akitaka Ito

Yusuke Ishii

Noboru Kitamura

Eri Sakuda

Chizu Sekine

Takeo Hirokawa

Kazuyoshi Kawanishi

Disclosed is an device having high light-emitting efficiency. A metal complex represented by the following formula (1).  In the formula (1), n represents an integer of 1 to 3. Land Leach independently represent the moiety of a group bonded to an iridium atom, except for coordinating atoms. When n is 3, a metal complex represented by the following formula (1-3): 

Metal complex and device using the metal complex

Provided is an organic material which can be employed for manufacturing an organic electroluminescent device having a long luminance half-lifetime. The organic material is a composition containing: a borane compound represented by Formula (B1): wherein three Arrepresent an arylene group or a divalent aromatic heterocyclic group; and three Xrepresent an aromatic amino group, a monovalent aromatic heterocyclic group, an alkyl group, or a hydrogen atom; and a conjugated polymer compound represented by Formula (P1): wherein Arrepresents an arylene group, with the proviso that Aris different from Flu; Flurepresents a fluorenediyl group; Hetrepresents a divalent aromatic heterocyclic group; Amrepresents a divalent aromatic amine residue; n, n, nand nare numbers representing molar ratios of Ar, Flu, Hetand Am, respectively, and numbers satisfying 0.4&#x2266;n&#x2266;1, 0&#x2266;n&#x2266;0.6, 0&#x2266;n&#x2266;0.6 and 0&#x2266;n&#x2266;0.6 when defining n+n+n+n=1.

Composition containing borane compound and conjugated polymer compound, and element

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Sapporo, Japan

Akitaka Ito