Novel tri/tetra-coordination dual-core copper [I] coordination compound blue-green materials and preparation method thereof

Abstract

The invention relates to luminescent novel material synthesis technologies and particularly relates to blue-green materials with novel tri / tetra-coordination dual-core copper [I] coordination compounds and a preparation method thereof. According to the preparation method, the novel dual-core copper [I] coordination compound blue-green materials, namely [Cu2[bmptzH][[mu]-dppm]2][ClO4]2 and [Cu2[fptz][[mu]-dppm]2][ClO4], which simultaneously have two coordination bonding manners, namely tri-coordination and tetra-coordination, and have special structures, are synthesized from functionalized pyridine triazole bidentate chelating ligands (5-tert-butyl-3-[6-methyl-pyridine-2-yl]-1,2,4-triazole and 5-trifluoromethyl-3-[pyridine-2-yl]-1,2,4-triazole) and an organic diphosphine auxiliary ligand (bis[diphenylphosphino]methane). The blue-green materials show very good photoluminescence properties in a solid state, and the photoinduced quantum efficiency is 66% and 77% respectively.

Description

technical field [0001] The invention relates to the synthesis technology of new luminescent materials, in particular to a blue-green light material with novel three- and four-coordinated binuclear copper [I] complexes and a preparation method. Background technique [0002] Due to the heavy atom effect and strong spin-orbit coupling, transition metal light-emitting complexes can make full use of singlet and triplet energy, and the luminous efficiency is greatly improved. At present, the metal atoms of 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 position of current research. Since the transition metals of the fifth and sixth periods (except for a few metals of the first and second subgroups) are scarce in the earth's crust and difficult to mine, the cost of using such noble metal luminescent complexes is relatively high, and they ar...

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Problems solved by technology

However, there are few literature reports on the controlled synthesis of monovalent copper dinuclear luminescent complexes using nitrogen heterocyclic multidentate chelating ligands and organic bisphosphine ligands.

[0005] Application of 5-tert-butyl-3-[6-methyl-2-pyridyl]-1,2,4-triazole and 5-trifluoromethyl-3-[2-pyridyl]-1,2 , 4-triazole two nitrogen heterocyclic bidentate chelating ligands, organic bisphosphine ligands are selected as auxiliary ligands, design and synthesis of monovalent copper complex luminescent materials and their synthesis methods, there is no public report yet

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