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Issue 13, 2014
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Aggregation induced emission and amplified explosive detection of tetraphenylethylene-substituted polycarbazoles

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Abstract

Novel conjugated polymers based on 3,6-carbazole repeat units were synthesized by nickel-catalyzed Yamamoto coupling under microwave heating. The resulting poly(3,6-carbazole)s contain tetraphenylethylene (TPE) units in their side chains. The resultant polymers show aggregation induced emission (AIE) behavior. Hereby, the photoluminescence (PL) intensity of PCzTPE0.5 in 90% water–THF is 35 times higher than that in pure THF, connected to the introduction of TPE side chains. The ability of polymer PCzTPE0.5 for explosive sensing was also studied. A maximum Stern–Volmer quenching constant of 1.26 × 106 M−1 was observed for PL quenching of PCzTPE0.5 aggregates by trinitrobenzene (TNB). A solid state paper strip test based on PCzTPE0.5 and PCzTPE also demonstrates effective PL quenching towards both TNB vapor and solution.

Graphical abstract: Aggregation induced emission and amplified explosive detection of tetraphenylethylene-substituted polycarbazoles

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Publication details

The article was received on 19 Feb 2014, accepted on 11 Mar 2014 and first published on 12 Mar 2014


Article type: Paper
DOI: 10.1039/C4PY00251B
Citation: Polym. Chem., 2014,5, 4048-4053
  • Open access: Creative Commons BY license
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    Aggregation induced emission and amplified explosive detection of tetraphenylethylene-substituted polycarbazoles

    W. Dong, T. Fei, A. Palma-Cando and U. Scherf, Polym. Chem., 2014, 5, 4048
    DOI: 10.1039/C4PY00251B

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