Synthesis, Light Emission, Explosive Detection, Fluorescent Photopatterning, and Optical Limiting of Disubstituted Polyacetylenes Carrying Tetraphenylethene Luminogens

被引：49

作者：

Chan, Carrie Y. K. ^{[1
,2
]}

Lam, Jacky W. Y. ^{[1
,2
]}

Deng, Chunmei ^{[1
,2
]}

Chen, Xiaojun ^{[2
]}

Wong, Kam Sing ^{[2
]}

Tang, Ben Zhong ^{[1
,2
,3
]}

机构：

[1] HKUST Shenzhen Res Inst, South Area, Shenzhen 518057, Peoples R China

[2] Hong Kong Univ Sci & Technol, Inst Mol Funct Mat, State Key Lab Mol Neurosci,Dept Phys, Inst Adv Study,Div Biomed Engn,Dept Chem,Div Life, Kowloon, Hong Kong, Peoples R China

[3] S China Univ Technol, State Key Lab Luminescent Mat & Devices, SCUT HKUST Joint Res Lab, Guangdong Innovat Res Team, Guangzhou 510640, Peoples R China

来源：

MACROMOLECULES | 2015年 / 48卷 / 04期

基金：

美国国家科学基金会;

关键词：

AGGREGATION-INDUCED EMISSION; POLYMERS NOBEL LECTURE; CONJUGATED POLYMERS; EMITTING POLYACETYLENES; THERMAL-STABILITY; SOLID-STATE; FILM; ELECTROLUMINESCENCE; SENSOR; SUPERAMPLIFICATION;

D O I：

10.1021/ma502341j

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Tetraphenylethene-functionalized acetylenes [(C6H5)(2)C=C(C6H5)(C6H4C equivalent to CR), R = C8H17 and C6H5] were synthesized, and their polymerizations were effected by WCl6Ph4Sn at elevated temperatures in toluene under nitrogen, furnishing polymers P1 and P2. The polymers possessed good solubility and degraded at high temperatures of up to similar to 400 degrees C under nitrogen. Both polymers emitted weakly in the solution state. Whereas the emission of P1 was enhanced when aggregated, that of P2 was quenched, demonstrating that the light emission of polyacetylenes could be varied readily by changing their molecular structure. The polymers could serve as fluorescent chemosensors for explosive detection with an amplification effect. UV irradiation of their films in air photo-oxidized and bleached the fluorescence of the exposed parts, generating fluorescent photopatterns. The polymers exhibited optical nonlinearity and could limit laser pulses.

引用

页码：1038 / 1047

页数：10

共 57 条

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