Highly sensitive switching of solid-state luminescence by controlling intersystem crossing

被引：222

作者：

Zhao, Weijun ^{[1
,2
]}

He, Zikai ^{[2
,3
]}

Peng, Qian ^{[4
]}

Lam, Jacky W. Y. ^{[2
,5
,6
]}

Ma, Huili ^{[7
,8
,9
]}

Qiu, Zijie ^{[2
,5
,6
]}

Chen, Yuncong ^{[2
,5
,6
]}

Zhao, Zheng ^{[2
,5
,6
]}

Shuai, Zhigang ^{[7
]}

Dong, Yongqiang ^{[1
]}

Tang, Ben Zhong ^{[2
,5
,6
]}

机构：

[1] Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, 19 XinJieKouWai St, Beijing 100875, Peoples R China

[2] Hong Kong Univ Sci & Technol, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Hong Kong Branch, Dept Chem, Kowloon, Hong Kong, Peoples R China

[3] Harbin Inst Technol, Sch Sci, HIT Campus Univ Town, Shenzhen 518055, Peoples R China

[4] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100190, Peoples R China

[5] SCUT, NSFC Ctr Luminescence Mol Aggregates, SCUT HKUST Joint Res Inst, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[6] HKUST Shenzhen Res Inst, 9 Yuexing 1st RD,South Area,Hitech Pk Nanshan, Shenzhen 518055, Peoples R China

[7] Tsinghua Univ, Dept Chem, Key Lab Organ OptoElect & Mol Engn, Beijing 100084, Peoples R China

[8] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, KLOFE, 30 South Puzhu Rd, Nanjing 211800, Jiangsu, Peoples R China

[9] Nanjing Tech Univ NanjingTech, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, IAM, 30 South Puzhu Rd, Nanjing 211800, Jiangsu, Peoples R China

来源：

NATURE COMMUNICATIONS | 2018年 / 9卷

基金：

美国国家科学基金会; 对外科技合作项目（国际科技项目）;

关键词：

AGGREGATION-INDUCED EMISSION; HIGH-CONTRAST; MOLECULAR ASSEMBLIES; HAPTIC MEMORY; POLYMERS; CONSTRUCTION; DERIVATIVES; RELAXATION; CRYSTALS; DESIGN;

D O I：

10.1038/s41467-018-05476-y

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The development of intelligent materials, in particular those showing the highly sensitive mechanoresponsive luminescence (MRL), is desirable but challenging. Here we report a design strategy for constructing high performance On-Off MRL materials by introducing nitrophenyl groups to molecules with aggregation-induced emission (AIE) characteristic. The on-off methodology employed is based on the control of the intersystem crossing (ISC) process. Experimental and theoretical investigations reveal that the nitrophenyl group effectively opens the nonradiative ISC channel to impart the high sensitivity and contrast On-Off behavior. On the other hand, the twisted AIE luminogen core endows enhanced reversibility and reduces the pressure required for the luminescence switching. Thin films can be readily fabricated from the designed materials to allow versatile applications in optical information recording and haptic sensing. The proposed design strategy thus provides a big step to expand the scope of the unique On-Off MRL family.

引用

页数：8

共 56 条

[1] Halogen-Assisted Piezochromic Supramolecular Assemblies for Versatile Haptic Memory [J].