Light-emitting material comprising orthometalated iridium complex, light-emitting device, high efficiency red light-emitting device, and novel iridium complex
   
   

A light-emitting material comprises a compound having a partial structure represented by the following formula (1) or tautomer thereof: ##STR1##

Um material light-emitting compreende um composto que tem uma estrutura parcial representada disso pela seguinte fórmula (1) ou pelo tautomer: ## do ## STR1
 
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