Issue 11, 2018

Conjugated polymers containing tetraphenylethylene in the backbones and side-chains for highly sensitive TNT detection

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 Ksv 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.

Graphical abstract: Conjugated polymers containing tetraphenylethylene in the backbones and side-chains for highly sensitive TNT detection

Article information

Article type
Paper
Submitted
21 dic. 2017
Accepted
27 ene. 2018
First published
02 feb. 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 5760-5767

Conjugated polymers containing tetraphenylethylene in the backbones and side-chains for highly sensitive TNT detection

W. Dong, T. Fei and U. Scherf, RSC Adv., 2018, 8, 5760 DOI: 10.1039/C7RA13536J

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