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Issue 1, 2015
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Thiol–bromo click polymerization for multifunctional polymers: synthesis, light refraction, aggregation-induced emission and explosive detection

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Abstract

New multifunctional polymers PI and PII are synthesized from 4,4′-thiodibenzenethiol and 1,2-bis[4-(bromoalkoxy)phenyl]-1,2-diphenylethene through facile thiol–bromo click polymerization. The resulting polymers exhibit high refractive indices over a wide spectral region (300–1700 nm) and large Abbé numbers due to the presence of sulfur atoms and a large fraction of aromatic building blocks. The polymers also show high optical transparency in the visible region, rendering them ideal candidates for optical applications. Additionally, they demonstrate typical aggregation-induced emission (AIE) characteristics owing to the incorporation of propeller-like tetraphenylethene (TPE) moieties. The polymers are nonemissive in good solvents; however, they become highly fluorescent as aggregated suspensions whose emission is further effectively quenched by a representative explosive of picric acid (PA), exhibiting a significantly amplified superquenching effect, with the detection limit as low as 0.5 ppm. These results suggest a great promise of preparing multifunctional polymers by thiol–bromo click polymerization with a rational molecular design.

Graphical abstract: Thiol–bromo click polymerization for multifunctional polymers: synthesis, light refraction, aggregation-induced emission and explosive detection

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Publication details

The article was received on 22 Aug 2014, accepted on 07 Sep 2014 and first published on 08 Sep 2014


Article type: Paper
DOI: 10.1039/C4PY01164C
Citation: Polym. Chem., 2015,6, 97-105

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    Thiol–bromo click polymerization for multifunctional polymers: synthesis, light refraction, aggregation-induced emission and explosive detection

    Y. Zhang, G. Chen, Y. Lin, L. Zhao, W. Z. Yuan, P. Lu, C. K. W. Jim, Y. Zhang and B. Z. Tang, Polym. Chem., 2015, 6, 97
    DOI: 10.1039/C4PY01164C

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