TRANSITION METAL COMPLEX, AND ORGANIC LIGHT-EMITTING ELEMENT, COLOR CONVERSION LIGHT-EMITTING ELEMENT, PHOTOTRANSFORMATION LIGHT-EMITTING ELEMENT, ORGANIC LASER DIODE LIGHT-EMITTING ELEMENT, DYE LASER, DISPLAY DEVICE, LIGHTING DEVICE AND ELECTRONIC EQUIPMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a transition metal complex having high T1 level adjustable for a light-emitting material, a host material and an exciton blocking material, and to provide an organic light-emitting element, a color conversion light-emitting element, a phototransformation light-emitting element, an organic laser diode light-emitting element, a dye laser, a display device, a lighting device and electronic equipment using the same.SOLUTION: There is provided a dicarbene transition metal complex represented by the formula (1). In the formula (1), M represents a transition metal element, K represents a monodentate or bidentate ligand without electrical charge, L represents a monodentate or bidentate ligand, m and o represent an integer of 0 to 5, n represents an integer of 1 to 3, p represents an integer of 0 to 4, W- represents a counter ion, Y1 to Y4, R1 and R2 each independently represents a hydrogen atom, an alkyl group, a cycloalkyl group, a heterocycloalkyl group, an aryl group, an aralkyl group, a heteroaryl group, an alkenyl group, an alkynyl group and the like.