Disilane-bridged architectures with high optical transparency for optical limiting

被引：13

作者：

Feng, Hongjie ^{[1
,2
]}

Zhou, Zhikuan ^{[1
,2
]}

May, Aviwe K. ^{[3
]}

Chen, Jiaying ^{[1
,2
]}

Mack, John ^{[3
]}

Nyokong, Tebello ^{[3
]}

Gai, Lizhi ^{[1
,2
]}

Lu, Hua ^{[1
,2
]}

机构：

[1] Hangzhou Normal Univ, Key Lab Organosilicon Chem & Mat Technol, Minist Educ, 2318 Yuhangtang Rd, Hangzhou 311121, Peoples R China

[2] Hangzhou Normal Univ, Key Lab Organosilicon Mat Zhejiang Prov, 2318 Yuhangtang Rd, Hangzhou 311121, Peoples R China

[3] Rhodes Univ, Inst Nanotechnol Innovat, Dept Chem, ZA-6140 Makhanda, South Africa

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2021年 / 9卷 / 20期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

AGGREGATION-INDUCED EMISSION; 2-PHOTON ABSORPTION; SILICON; FLUORESCENCE; DESIGN;

D O I：

10.1039/d1tc01488a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel tetraphenylethylene (TPE) architecture that makes use of a disilane bridge was developed to successfully prepare organic optical power limiting (OPL) materials with high transparency. The sigma-bridged TPE derivatives exhibit enhanced solid-state emission efficacies up to 4 times that of TPE. Due to the unique sigma-electron delocalization, the incorporated Si-Si bridge gives rise to intense nonlinear optics (NLO) properties. These compounds show favorable optical transparency in the visible region, since the sigma-pi interaction has a relatively minor effect on the absorption properties of TPE. The poly(bisphenol A carbonate) (PBC) thin films of disilane-bridged compounds exhibit significant reverse saturable absorbance (RSA) responses during Z-scan measurements at 532 nm. In contrast, negligible OPL properties were observed in tetrahydrofuran (THF) solution and when a PBC thin film was prepared with TPE. The disilane-bridged molecular system represents a novel and easily prepared architecture for the construction of solid-state optical limiting materials.

引用

页码：6470 / 6476

页数：7

共 37 条

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