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Preparation of donor–acceptor polyfluorenes with pendant carboxyl or amine functionalities and their photoluminescence properties

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Abstract

Pendant carboxyl groups were introduced into donor–acceptor polyfluorene carrying benzothiadiazole as an acceptor moiety. The emission color from its solution was different depending on the solvent. While the methanol solution of the polymer exhibited blue emission, yellow emission was observed from its tetrahydrofuran solution. Influence of solvent polarity, solution concentration, temperature, and addition of acid on photoluminescence properties indicated that the observed change in emission color was due to polymer aggregation coming from inter and/or intramolecular interaction between pendant carboxyl groups. Polyfluorene carrying benzothiadiazole moiety with pendant amino groups also exhibited emission color change and was useful as a fluorimetric sensor for polyacid.

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Authors and Affiliations

  1. Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, 514-8507, Japan

    Daiki Ando, Jumpei Ijichi, Takahiro Uno, Takahito Itoh & Masataka Kubo

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  1. Daiki Ando
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  2. Jumpei Ijichi
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  3. Takahiro Uno
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  4. Takahito Itoh
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  5. Masataka Kubo
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Correspondence to Masataka Kubo.

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Ando, D., Ijichi, J., Uno, T. et al. Preparation of donor–acceptor polyfluorenes with pendant carboxyl or amine functionalities and their photoluminescence properties. Polym. Bull. 76, 6137–6151 (2019). https://doi.org/10.1007/s00289-019-02701-6

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  • DOI: https://doi.org/10.1007/s00289-019-02701-6

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