Organic Nanocrystals with Bright Red Persistent Room-Temperature Phosphorescence for Biological Applications

被引：532

作者：

Fateminia, S. M. Ali ^{[1
]}

Mao, Zhu ^{[2
]}

Xu, Shidang ^{[1
]}

Yang, Zhiyong ^{[2
]}

Chi, Zhenguo ^{[2
]}

Liu, Bin ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore

[2] Sun Yat Sen Univ, Guangdong Engn Technol, GDHPPC Lab,Funct Films,State Key Lab OEMT,Sch Che, PCFM Lab,Res Ctr High Performance Organ & Polymer, Guangzhou 510275, Guangdong, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 40期

关键词：

bioimaging; nanocrystals; organic materials; persistent room-temperature phosphorescence; CRYSTALLIZATION-INDUCED PHOSPHORESCENCE; FLUORESCENCE; EMISSION; LUMINOGENS; STATE;

D O I：

10.1002/anie.201705945

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Persistent room-temperature phosphorescence (RTP) in pure organic materials has attracted great attention because of their unique optical properties. The design of organic materials with bright red persistent RTP remains challenging. Herein, we report a new design strategy for realizing high brightness and long lifetime of red-emissive RTP molecules, which is based on introducing an alkoxy spacer between the hybrid units in the molecule. The spacer offers easy Br-H bond formation during crystallization, which also facilitates intermolecular electron coupling to favor persistent RTP. As the majority of RTP compounds have to be confined in a rigid environment to quench nonradiative relaxation pathways for bright phosphorescence emission, nanocrystallization is used to not only rigidify the molecules but also offer the desirable size and water-dispersity for biomedical applications.

引用

页码：12160 / 12164

页数：5

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