Pyridine pyrazole dinuclear copper [1] complex luminescent material and preparation method

Abstract

The invention relates to a dinuclear copper [1] complex luminescent material containing pyridine pyrazole chelating ligand and a preparation method thereof. By the application of the functional pyridine pyrazole two-tooth chelating ligand (3-[2-pyridyl] pyrazole [pypzH for short] or 5-tertiary butyl-3-[2-pyridyl] pyrazole [pybpzH for short] or 5-trifluoromethyl-3-[2-pyridyl] pyrazole [pyfpzH for short] and organic double phosphine auxiliary ligand (1,4-double[diphenylphosphine] butane [dppb for short]), a kind of pyridine pyrazole dinuclear copper [1] complex luminescent material [Cu2[pypzH]2[u-dppb]2][ClO4]2,[Cu2 [pybpzH]2[u-dppb]2][ClO4]2 and [Cu2[pyfpzH]2[u-dppb]2][ClO4]2 is prepared. The solid state luminescence property of the luminescent material can be regulated and controlled through the change of the substituent group on the pyridine and pyrazole ring, the maximum values of the solid state luminescence wave length of the luminescent material are 500 nm, 505 nm and 494 nm, the solid state luminescence life of the luminescent material is 48 us, 19 us and 36 us, and the solid state luminescence quantum efficiency of the luminescent material is 74%, 6% and 85%.

Description

technical field

[0001] The invention relates to synthesis technology of new luminescent materials, in particular to a kind of dinuclear copper [I] complex luminescent materials containing pyridine pyrazole chelating ligands and a preparation method thereof. Background technique

[0002] Due to the heavy atom effect and strong spin-orbit coupling, the luminescent complexes based on transition metals can theoretically utilize the energy from all singlet and triplet states, and the luminous efficiency can be greatly and effectively improved. At present, the metal centers of transition metal luminescent complexes are mainly concentrated in the fifth and sixth periods, especially the transition metals of group VIII, while ruthenium, osmium, iridium and platinum occupy the central positions of current research. Since the transition metal elements of the fifth and sixth periods (except for a few metal elements of the first and second subgroups) are scarce in the earth's crust, mini...

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