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Статья
2021

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


Fuwen ShiFuwen Shi, Minghao NiMinghao Ni, Zhiquan WangZhiquan Wang, Nannan HeNannan He, Xiang LiXiang Li, Jianli HuaJianli Hua, Bo LiBo Li, Ye ChenYe Chen
Российский журнал физической химии А
https://doi.org/10.1134/S0036024421080215
Abstract / Full Text

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.

Author information
  • Key Laboratory of Polar Materials and Devices (MOE), Department of Optoelectronics, East China Normal University, 200241, Shanghai, ChinaFuwen Shi, Minghao Ni, Zhiquan Wang, Xiang Li, Bo Li & Ye Chen
  • Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 200237, Shanghai, ChinaNannan He & Jianli Hua
References
  1. H. Zollinger, Color Chemistry, Syntheses, Properties, and Applications of Organic Dyes and Pigments (Wiley, New York, 2003).
  2. B. Adhikari and S. Majumdar, Prog. Polym. Sci. 29, 699 (2004).
  3. T. Gunnlaugsson et al., Coord. Chem. Rev. 250, 3094 (2006).
  4. B. N. Giepmans et al., Science (Washington, DC, U. S.) 312, 217 (2006).
  5. J. V. Frangioni, Curr. Opin. Chem. Biol. 7, 626 (2003).
  6. B. Geffroy, P. le Roy, and C. Prat, Polymer Int. 55, 572 (2006).
  7. L. Xiao et al., Adv. Mater. 23, 926 (2011).
  8. G. Horowitz, Adv. Mater. 10, 365 (1998).
  9. C. Wang et al., Chem. Rev. 112, 2208 (2012).
  10. H. Usta, A. Facchetti, and T. J. Marks, Acc. Chem. Res. 44, 501 (2015).
  11. A. Facchetti, Chem. Mater. 23, 733 (2011).
  12. P. M. Beaujuge and J. M. Fréchet, J. Am. Chem. Soc. 133, 20009 (2011).
  13. M. Albota et al., Science (Washington, DC, U. S.) 281, 1653 (1998).
  14. N. He et al., Synth. Met. 162, 217 (2012).
  15. Z. Ning and H. Tian, Cheminform 41, 5483 (2009).
  16. I. Osaka et al., Adv. Mater. 19, 4160 (2007).
  17. A. A. Kubicki, Chem. Phys. Lett. 457, 246 (2008).
  18. O. A. C. Winkworth, Chem. Phys. Lett. 85, 513 (1982).
  19. J. R. Lakowicz, Principles of Fluorescence Spectroscopy (Springer, New York, 2006); Naturwissensch. 78, 456 (1991).
  20. J. R. Mannekutla, B. G. Mulimani, and S. R. Inamdar, Spectrochim. Acta, Part A 69, 419 (2008).
  21. W. Wu et al., Dyes Pigments 111, 21 (2014).