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Maity N, Polok K, Piatkowski P, Smortsova Y, Miannay FA, Gadomski W, Idrissi A. Effect of Mixture Composition on the Photophysics of Indoline Dyes in Imidazolium Ionic Liquid-Molecular Solvent Mixtures: A Femtosecond Transient Absorption Study. J Phys Chem B 2024. [PMID: 38687688 DOI: 10.1021/acs.jpcb.4c00320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
We conducted a study on the photophysics of three indoline dyes, D102, D149, and D205, in binary mixtures of ionic liquids (IL) and polar aprotic molecular solvents (MS). Specifically, we examined the behavior of these dyes in IL-MS mixtures containing four different imidazolium-based ILs and three different polar aprotic MSs. Our investigation involved several techniques, including stationary absorption and emission measurements, as well as femtosecond transient absorption (TA) spectroscopy. Through our analysis, we discovered a peculiar behavior of several photophysical properties at low IL mole fractions (0 < XIL < 0.2). Indeed, in this range of mixture composition, the absorption maximum wavelength decreases noticeably, while the emission maximum wavelength and the Stokes shift, expressed in wavenumbers, reach a maximum. while a minimum occurs in the relative quantum yield and the excited state lifetime. These results indicate that the solvation of dye undergoes a large change in this range of mixture composition. We found that, at high ionic liquid content, the excited relaxation times are correlated with the high viscosity, while at low content, it is the polarity of the solvent that influences the behavior of the excited relaxation times. At a mixture composition of around 0.10, the behavior of the photophysical properties of the studied IL-MS mixtures indicates a crossover between situations where the solvation is dominated by that of ions and that dominated by the solvent.
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Affiliation(s)
- Nishith Maity
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Kiel 24118, Germany
| | - Kamil Polok
- Faculty of Chemistry, Laboratory of Spectroscopy and Intermolecular Interactions, University of Warsaw, ̇wirki i Wigury 101, Warsaw 02-089, Poland
| | - Piotr Piatkowski
- Faculty of Chemistry, Laboratory of Spectroscopy and Intermolecular Interactions, University of Warsaw, ̇wirki i Wigury 101, Warsaw 02-089, Poland
| | | | - François-Alexandre Miannay
- CNRS, UMR 8516-LASIRe, Laboratoire Avancé de Spectroscopie pour les Interactions, la réactivité et l'Environement, Universiy of Lille, Lille F-59000, France
| | - Wojciech Gadomski
- Faculty of Chemistry, Laboratory of Spectroscopy and Intermolecular Interactions, University of Warsaw, ̇wirki i Wigury 101, Warsaw 02-089, Poland
| | - Abdenacer Idrissi
- CNRS, UMR 8516-LASIRe, Laboratoire Avancé de Spectroscopie pour les Interactions, la réactivité et l'Environement, Universiy of Lille, Lille F-59000, France
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Hu K, Kong M, Qin M, Zeng J, Ai B, Zhang J, Zhang H, Zhong F, Wang G, Zhuang L. Experimental and theoretical studies of chitosan dissolution in ionic liquids: Contribution ratio effect of cations and anions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang X, Zhang S, Yao J, Li H. The Polarity of Ionic Liquids: Relationship between Relative Permittivity and Spectroscopic Parameters of Probe. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00485] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xinyu Wang
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P.R. China
| | - Songna Zhang
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P.R. China
| | - Jia Yao
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P.R. China
| | - Haoran Li
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University, Hangzhou 310027, P.R. China
- State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P.R. China
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Wang YT, Li KL, Wei LG, Ma YC. Probing Molecular Interactions in 1-Butyl-3-methylimidazolium Chloride-Water and 2,6-Dimethoxyphenol Mixtures Using Attenuated Total Reflection Infrared Spectroscopy. CHINESE J CHEM PHYS 2017. [DOI: 10.1063/1674-0068/30/cjcp1611203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Yan-tao Wang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
- Laboratory of EA4297 TIMR, University of Technology of Compiègne, Compiègne 60200, France
| | - Kun-lan Li
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Li-gang Wei
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Ying-chong Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
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