A Stable Room-Temperature Luminescent Biphenylmethyl Radical

被引：145

作者：

Ai, Xin ^{[1
]}

Chen, Yingxin ^{[1
]}

Feng, Yuting ^{[1
]}

Li, Feng ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Qianjin Ave 2699, Changchun 130012, Jilin, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2018年 / 57卷 / 11期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

luminescence; organic light-emitting diodes; radicals; stability; LIGHT-EMITTING-DIODES; ORGANIC ELECTROLUMINESCENT DEVICES; CARBON FREE-RADICALS; N-TYPE DOPANT; DOUBLET EXCITON; EFFICIENT; EMISSION; COORDINATION; FLUORESCENCE; TRANSISTORS;

D O I：

10.1002/anie.201713321

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

There is only one family of room-temperature luminescent radicals, the triphenylmethyl radicals, to date. Herein, we synthesize a new stable room-temperature luminescent radical, (N-carbazolyl)bis(2,4,6-tirchlorophenyl)-methyl radical (CzBTM), which has improved properties compared to the triphenylmethyl radicals. X-ray crystallography, electron paramagnetic resonance spectroscopy, and magnetic susceptibility measurements confirmed the radical structure. CzBTM shows room-temperature deep-red to nearinfrared emission in various solutions. Both thermal and photo stability were significantly enhanced by the replacement of trichlorobenzene by the carbazole moiety. The electroluminescence results of CzBTM verify its potential application to circumvent the problem of triplet harvesting in traditional fluorescent OLEDs. A new family of stable luminescent radicals based on CzBTM is anticipated.

引用

页码：2869 / 2873

页数：5

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