Synthesis, photophysical properties and theoretical study of blue luminescence materials based on phenanthro[9,10-d] imidazole

被引：0

作者：

Wang D.-W. ^{[1
]}

Zuo Q.-H. ^{[1
]}

Lu Y.-B. ^{[1
]}

Tian B. ^{[1
]}

Xu Y.-Z. ^{[1
]}

Weng S.-Y. ^{[1
]}

Duan Q. ^{[1
]}

Li B. ^{[2
]}

机构：

[1] School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun

[2] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2016年 / 37卷 / 11期

关键词：

Blue luminescence materials; Phenanthro[9,10-d] imidazole; Photophysical properties;

D O I：

10.3788/fgxb20163711.1346

中图分类号：

学科分类号：

摘要：

Two blue luminescence materials 2-phenyl-1H-phenanthro[9,10-d] imidazole (Phen-PI) and 2-pyridin-2-yl-1H-phenanthro[9,10-d] imidazole (Pyri-PI) were synthesized. The photophysical properties demonstrated the emission peaks of Phen-PI and Pyri-PI are 371.5, 388.5 and 403.5 nm, the photoluminescent quantum yield is 0.383 and 0.528, the fluorescence decay lifetime is 3.87 ns and 3.68 ns. The Frontier molecular orbital compositions and distribution for Phen-PI and Pyri-PI were calculated by using density functional theory (DFT). The results indicate that the introduction of pyridyl group to phenanthro[9,10-d] imidazole makes HOMO and LUMO of Pyri-PI decline 0.09 eV and 0.23 eV respectively, the energy gap between HOMO and LUMO decrease 0.14 eV, which can explaine the red-shift of Pyri-PI emission in theory. © 2016, Science Press. All right reserved.

引用

页码：1346 / 1352

页数：6

共 17 条

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