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

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. This journal is © 2014 the Partner Organisations.

Año de publicación:

2014

Keywords:

    Fuente:

    scopusscopus
    googlegoogle

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Polímero
    • Ciencia de materiales

    Áreas temáticas:

    • Química analítica

    Contribuidores:

    Scherf U.Scherf U.
    Dong W.Dong W.
    Fei T.Fei T.
    Alex Palma-CandoAlex Palma-Cando