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Updated: Sep 23, 2025
A Polyaniline-based Sensor of Nucleic Acids
Published on: November 1, 2016
Conjugated polymers containing tetraphenylethylene in the backbones and side-chains for highly sensitive TNT
Wenyue Dong1, Teng Fei2, Ullrich Scherf3
1School of Materials Science and Engineering, Changchun University of Science and Technology Changchun 130022 P. R. China dongwenyue@cust.edu.cn.
Abstract:
The novel polytriphenylamines derivatives PTPA1-TPE and PTPA2-TPE with TPE as side groups and bis(tert-butyl)-TPE in the backbones have been successfully synthesized via Yamamoto-type coupling under microwave heating. The incorporation of TPE units in the backbones and side-chains endows the polymers with a distinct AIE effect and high fluorescence quantum yields in the solid state. Meanwhile, nitroaromatic explosive detection based on dispersed, electron-rich PTPA1-TPE and PTPA2-TPE nanoaggregates in THF/water was carried out. Both of them show high sensitivity towards the TNT analyte, with a maximum Stern-Volmer quenching constant K sv of up to 8.3 × 104 M-1. In addition, the paper strip test demonstrates the promising practical application of the polymers as solid state sensors towards PL-based nitroaromatic explosive detection.
