HIGH-EFFICIENCY THERMALLY ACTIVATED DELAYED FLUORESCENCE OF A COPPER(I) COMPLEX BASED ON OCTACHLORO-1,10-PHENANTHROLINE

被引：3

作者：

Petyuk, M. Yu. ^{[1
]}

Rakhmanova, M. I. ^{[1
]}

Sadykov, E. Kh. ^{[1
]}

Bagryanskaya, I. Yu. ^{[2
]}

Sokolov, M. N. ^{[1
]}

Brylev, K. A. ^{[1
]}

Stass, D. V. ^{[3
,4
]}

Artem'ev, A. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk, Russia

[2] Russian Acad Sci, Vorozhtsov Novosibirsk Inst Organ Chem, Siberian Branch, Novosibirsk, Russia

[3] Russian Acad Sci, Voevodsky Inst Chem Kinet & Combust, Siberian Branch, Novosibirsk, Russia

[4] Novosibirsk State Univ, Novosibirsk, Russia

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2023年 / 64卷 / 12期

基金：

俄罗斯科学基金会;

关键词：

thermally activated delayed fluorescence; copper(I) complexes; octachloro-1,10-phenanthroline; diphosphine ligands; X-ray luminescence; crystal structure; CU(I) COMPLEXES; METAL; LIGANDS; IMPACT;

D O I：

10.1134/S0022476623120144

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A [Cu(phen-Cl-8)(Xantphos)]PF6 center dot 2CH(2)Cl(2) (1 center dot 2CH(2)Cl(2)) complex based on octachloro-1,10-phenanthroline (phen-Cl-8) and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (Xantphos) is prepared and studied. At 298 K, the crystalline form of the complex exhibits intense thermally activated delayed fluorescence (TADF) in the orange-red region with a quantum yield of 67% and a decay time of 2 mu s. Upon cooling down to 77 K, the emission maximum exhibits a bathochromic shift from 622 nm to 650 nm, and the decay time increases up to 550 mu s. Photoluminescence of the synthesized complex is additionally studied in the poly(methyl methacrylate) (PMMA) matrix and in a CH2Cl2 solution; the complex is shown to be X-ray luminescent. The spectral data and quantum chemical calculations show that the observed TADF is due to the charge transfer from the metal and phosphine ligand to the diimine group.

引用

页码：2427 / 2437

页数：11

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