Unraveling the effect of solvents on the excited state dynamics of C540A by experimental and theoretical study
In this work, the excited-state dynamics including intramolecular charge transfer (ICT) and the redshift of C540A have been investigated in a series of solvents on the basis of the Kamlet-Taft solvatochromic parameters ( π *, α , β ) using femtosecond transient absorption spectra and systematic theo...
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Published in | RSC advances Vol. 13; no. 8; pp. 4924 - 4931 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
06.02.2023
The Royal Society of Chemistry |
Subjects | |
Online Access | Get full text |
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Summary: | In this work, the excited-state dynamics including intramolecular charge transfer (ICT) and the redshift of C540A have been investigated in a series of solvents on the basis of the Kamlet-Taft solvatochromic parameters (
π
*,
α
,
β
) using femtosecond transient absorption spectra and systematic theoretical calculation. We demonstrate that the redshift of the emission peak has a linear relationship with the
α
and
π
* scales and the effect of the
π
* scale is slightly stronger than that of the
α
scale. Meanwhile, the ICT rates can be suggested as relevant to not only the
α
scale but also the
π
* scale. Additionally, C540A-AN has proved that the excited state molecules have a unique inactivation mechanism because of the dark feature of the S
1
(CT) state. The valuable mechanistic information gleaned from the excited-state dynamics by the experimental and theoretical study would facilitate the design of organic materials for prospective applications in photochemistry and photobiology.
The excited-state dynamics including intramolecular charge transfer and the redshift of C540A in a series of solvents have been investigated using femtosecond transient absorption spectra and systematic theoretical calculation. |
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Bibliography: | https://doi.org/10.1039/d3ra00259d Electronic supplementary information (ESI) available. See DOI ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/d3ra00259d |