| 摘要 |
A light-emitting device comprising a pair of electrodes and one or more organic layers disposed between the electrodes, the one or more organic layers comprising a light-emitting layer. At least one of the organic layers comprises a transition metal complex containing a moiety represented by the following formula (1): wherein M11 represents a transition metal ion; and R11, R12, R13, R14, R15, R16 and R17 represent a substituent or a single bond, respectively, or a tautomer thereof.
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