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Polysiloxane‐Modified Tetraphenylethene: Synthesis, AIE Properties, and Sensor for Detecting Explosives
Author(s) -
Li Qiaosheng,
Yang Zhaomin,
Ren Zhongjie,
Yan Shouke
Publication year - 2016
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201600378
Subject(s) - aggregation induced emission , materials science , thermal stability , emission intensity , homo/lumo , fluorescence , annealing (glass) , explosive material , photochemistry , condensation polymer , polymer , polymer chemistry , optoelectronics , chemistry , organic chemistry , molecule , optics , photoluminescence , composite material , physics
Polysiloxane‐modified tetraphenylethene (PTPESi) is successfully synthesized by attaching tetraphenylethene (TPE) units onto methylvinyldiethoxylsiloxane and subsequent polycondensation. Introducing polysiloxane into TPE has minimal effect on the photophysical properties and aggregation‐induced emission behavior of TPE. The highest occupied and lowest unoccupied molecular orbital (HOMO and LUMO) energy levels of PTPESi are located mainly on the tetraphenylethene moieties. The fluorescence intensity and the half width of the emission peak of PTPESi before and after annealing at 120 °C for 12 h are nearly the same, indicating high thermal stability and morphological stability. In addition, use of PTPESi film as a sensor toward the vapor‐phase detection of explosives is also studied and it displays quite high fluorescence quenching efficiency and good reversibility.