Citation: You-Hong GUO, Dong-Sheng ZHAO, Yan-Fang SHI, Ling-Ling ZHANG, Rong-Min YU. Synthesis, Structure and Photoluminescence of a Cu₂I₂ Complex with an Acridine-modified Diimine Ligand[J]. Chinese Journal of Structural Chemistry, ;2020, 39(7): 1288-1294. doi: 10.14102/j.cnki.0254–5861.2011–2552 shu

Synthesis, Structure and Photoluminescence of a Cu₂I₂ Complex with an Acridine-modified Diimine Ligand

a.
College of Pharmaceutics, Quanzhou Medical College, Quanzhou 362000, China
b.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

Corresponding author: You-Hong GUO, guo-youhong@163.com
Received Date: 29 July 2019
Accepted Date: 17 January 2020

Fund Project: the NSF 21671190

Figures(4)

A dinuclear cuprous complex [(mapypz)Cu(μ-I)₂Cu(mapypz)] (1, mapypz = 9,9-dimethyl-10-(6-(3-phenyl-1H-pyrazol-1-yl)-pyridin-3-yl)-9,10-dihydroacridine) was synthesized from the reaction of equivalent CuI and mapypz at room temperature. The compound crystallizes in monoclinic space group P2₁/c with a = 13.8300(4), b = 9.5365(2), c = 19.0833(5) Å, β = 103.017(3)º, V = 2452.23(11) Å³, Z = 2, M_r = 1237.92, D_c = 1.677 g/cm³, F(000) = 1232, μ = 11.334 mm^–1, GOOF = 1.001, the final R = 0.0330, and wR = 0.0741 for 4627 observed reflections with I > 2σ(I). The Cu(Ⅰ) atoms in the complex are four-coordinated with a distorted tetrahedral coordination geometry. The copper centers in the molecular structure are bridged by two iodide anions and each Cu(Ⅰ) is chelated further terminally by a diimine ligand. The [Cu(μ-I)₂Cu] core is planar. In the solid state, the complex exhibits orange photoluminescence with emission peak λ_max = 568 nm, lifetime τ = 16 μs and quantum yield ф = 0.22 at room temperature. The studies of varied temperature emission spectra and decay behaviours of the complex indicate that it displays thermally activated delayed fluorescence at room temperature. The results of experimental and DFT calculations suggest that the emission in the solid state originates from the ^1,3MLCT excited states.
- binuclear cuprous complex,
- crystal structure,
- emissive property,
- DFT calculation
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis, Structure and Photoluminescence of a Cu2I2 Complex with an Acridine-modified Diimine Ligand

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通讯作者: 陈斌, bchen63@163.com

Synthesis, Structure and Photoluminescence of a Cu₂I₂ Complex with an Acridine-modified Diimine Ligand