An AIE-active acridine functionalized spiro[fluorene-9,9′-xanthene] luminophore with mechanoresponsive luminescence for anti-counterfeiting, information encryption and blue OLEDs

被引：14

作者：

Liang, Xiaozhong ^{[1
]}

Dong, Bizheng ^{[1
]}

Wang, Hua ^{[1
]}

Zhang, Zheng ^{[1
]}

Wang, Sijing ^{[1
]}

Li, Jie ^{[1
]}

Zhao, Bo ^{[1
]}

Li, Zhijun ^{[1
]}

Xing, Yifan ^{[1
]}

Guo, Kunpeng ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Interface Sci & Engn Adv Mat, Minist Educ, Taiyuan 030024, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2022年 / 10卷 / 20期

基金：

中国国家自然科学基金;

关键词：

AGGREGATION-INDUCED EMISSION; QUANTUM EFFICIENCY;

D O I：

10.1039/d2tc00876a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multifunctional aggregation induced emission (AIE)-active luminophores have drawn great interest in materials science. In this work, a new three-dimensional (3D) luminophore of 9,9'-dimethyl-9,10-dihydroacridine substituted spiro(fluorene-9,9'-xanthene) (SFX-Ad) was synthesized and characterized. The highly twisted 3D configuration endows SFX-Ad with typical AIE activity, which exhibits weak emission in dilute solution and enhanced emission in the H-aggregate state. More importantly, the weakly emissive herringbone packing of SFX-Ad in the solid state displays mechanoresponsive luminescence (MRL) turn-on behavior, and underwent a crystal-to-amorphous transition. Based on its unique MRL behavior, using the samples of SFX-Ad in distinct luminescent states as the codes, anticounterfeiting and information-encryption applications were realized. Additionally, taking its suitable molecular orbital energy levels and bright emission together, a blue organic light emitting diode (lambda(EL) = 421 nm, CIE (0.15, 0.10)) based on an SFX-Ad emitter yields a maximum current efficiency, power efficiency, and external quantum efficiency of 3.22 cd A(-1), 2.30 lm W-1, and 2.58%, respectively.

引用

页码：7857 / 7865

页数：9