Multiple-resonant nitrogen embedded nanographenes with high photoluminescence efficiency and high colour purity

被引：0

作者：

Luo, Hao ^{[1
,2
]}

Wei, Jinbei ^{[1
]}

Mai, Minqiang ^{[3
]}

Zeng, Xuan ^{[3
]}

Zhang, Weifeng ^{[1
]}

Wei, Xuyang ^{[1
,2
]}

Zhang, Dongdong ^{[3
]}

Duan, Lian ^{[3
]}

Yu, Gui ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, CAS Res Educ Ctr Excellence Mol Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Chem Sci, Beijing 100049, Peoples R China

[3] Tsinghua Univ, Key Lab Organ Optoelect & Mol Engn, Minist Educ, Dept Chem, Beijing 100084, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2024年 / 12卷 / 39期

基金：

中国国家自然科学基金;

关键词：

Color - Full width at half maximum - Organic light emitting diodes (OLED) - Quantum yield;

D O I：

10.1039/d4tc02624a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A feasible approach by decorating pi-extensions with nitrogen is proposed to realize narrow-band emitting NGs with multiple resonance (MR) effect. Pure blue and green NGs were obtained under mild reaction conditions in high yields. Both NGs featured high photoluminescence quantum yields (>90%) with emission peaks at 454 and 516 nm, small full widths at half maxima (FWHMs) of 18 and 23 nm, and high colour saturation with y-coordinates of 0.083 and 0.73, respectively. OLEDs using these NGs as emitters exhibited ideal blue (459 nm) and green (532 nm) emissions with high colour purity and small FWHMs of 25 and 21 nm, respectively.

引用

页码：15888 / 15894

页数：7

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