Solvent Effects on Linear and Multi-branched Bithiazole-based Derivatives Fluorescence Studied by Steady-state and Time-resovled Spectroscopy
Fuwen Shi, Minghao Ni, Zhiquan Wang, Nannan He, Xiang Li, Jianli Hua, Bo Li, Ye Chen
Российский журнал физической химии А
https://doi.org/10.1134/S0036024421080215
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.
- 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
- H. Zollinger, Color Chemistry, Syntheses, Properties, and Applications of Organic Dyes and Pigments (Wiley, New York, 2003).
- B. Adhikari and S. Majumdar, Prog. Polym. Sci. 29, 699 (2004).
- T. Gunnlaugsson et al., Coord. Chem. Rev. 250, 3094 (2006).
- B. N. Giepmans et al., Science (Washington, DC, U. S.) 312, 217 (2006).
- J. V. Frangioni, Curr. Opin. Chem. Biol. 7, 626 (2003).
- B. Geffroy, P. le Roy, and C. Prat, Polymer Int. 55, 572 (2006).
- L. Xiao et al., Adv. Mater. 23, 926 (2011).
- G. Horowitz, Adv. Mater. 10, 365 (1998).
- C. Wang et al., Chem. Rev. 112, 2208 (2012).
- H. Usta, A. Facchetti, and T. J. Marks, Acc. Chem. Res. 44, 501 (2015).
- A. Facchetti, Chem. Mater. 23, 733 (2011).
- P. M. Beaujuge and J. M. Fréchet, J. Am. Chem. Soc. 133, 20009 (2011).
- M. Albota et al., Science (Washington, DC, U. S.) 281, 1653 (1998).
- N. He et al., Synth. Met. 162, 217 (2012).
- Z. Ning and H. Tian, Cheminform 41, 5483 (2009).
- I. Osaka et al., Adv. Mater. 19, 4160 (2007).
- A. A. Kubicki, Chem. Phys. Lett. 457, 246 (2008).
- O. A. C. Winkworth, Chem. Phys. Lett. 85, 513 (1982).
- J. R. Lakowicz, Principles of Fluorescence Spectroscopy (Springer, New York, 2006); Naturwissensch. 78, 456 (1991).
- J. R. Mannekutla, B. G. Mulimani, and S. R. Inamdar, Spectrochim. Acta, Part A 69, 419 (2008).
- W. Wu et al., Dyes Pigments 111, 21 (2014).