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Solvent Effects on Linear and Multi-branched Bithiazole-based Derivatives Fluorescence Studied by Steady-state and Time-resovled Spectroscopy

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Abstract

Steady-state absorption, emission, and time-resolved spectroscopy were utilized to study the dynamics of excited states of linear and multi-branched bithiazole derivatives in different solvents at room temperature. In the studied compounds, triphenylamine and bithiazole groups act as donor and acceptor, respectively. BTZ-I and II have similar linear molecular structures, while BTZ-III and BTZ-IV have multi-branched structures. The difference is that the donor and acceptor units are connected by a single bond or a triple bond, respectively. With increase in solvent polarity, the fluorescence spectra exhibit a red shift and the fluorescence lifetime increases. Our results suggest there is intra-molecular charge transfer (ICT) processes in these four samples.

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ACKNOWLEDGMENTS

This work was supported by the National Key Research and Development Program of China (grand no. 2016YFB0501604), and the National Natural Science Foundation of China (grand nos. 11575062, 61227902).

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Authors and Affiliations

  1. Key Laboratory of Polar Materials and Devices (MOE), Department of Optoelectronics, East China Normal University, 200241, Shanghai, China

    Fuwen Shi, Minghao Ni, Zhiquan Wang, Xiang Li, Bo Li & Ye Chen

  2. Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 200237, Shanghai, China

    Nannan He & Jianli Hua

Authors
  1. Fuwen Shi
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  2. Minghao Ni
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  3. Zhiquan Wang
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  4. Nannan He
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  5. Xiang Li
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  6. Jianli Hua
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  7. Bo Li
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  8. Ye Chen
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Correspondence to Bo Li or Ye Chen.

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Shi, F., Ni, M., Wang, Z. et al. Solvent Effects on Linear and Multi-branched Bithiazole-based Derivatives Fluorescence Studied by Steady-state and Time-resovled Spectroscopy. Russ. J. Phys. Chem. 95, 1641–1645 (2021). https://doi.org/10.1134/S0036024421080215

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  • DOI: https://doi.org/10.1134/S0036024421080215

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