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Issue 11, 2018
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Conjugated polymers containing tetraphenylethylene in the backbones and side-chains for highly sensitive TNT detection

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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

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Publication details

The article was received on 21 Dec 2017, accepted on 27 Jan 2018 and first published on 02 Feb 2018


Article type: Paper
DOI: 10.1039/C7RA13536J
RSC Adv., 2018,8, 5760-5767
  • Open access: Creative Commons BY-NC license
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    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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