Optical properties of protonated Rhodamine 19 isomers in solution and in the gas phase

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Author(s) Chingin, Konstantin, Balabin, Roman M., Frankevich, Vladimir, Chen, Huanwen, Barylyuk, Konstantin, Nieckarz, Robert, Fedorov, Alexey, Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title Optical properties of protonated Rhodamine 19 isomers in solution and in the gas phase
Author(s) Chingin, Konstantin
Balabin, Roman M.
Frankevich, Vladimir
Chen, Huanwen
Barylyuk, Konstantin
Nieckarz, Robert
Fedorov, Alexey
Zenobi, Renato
Journal or Series Title Physical chemistry, chemical physics
Volume Number 12
Issue Number 42
Start Page 14121
End Page 14127
ISSN 1463-9076
Publisher The Royal Society of Chemistry
Publication Place Letchworth, Herts.
Publication Date 2010
Abstract Visible light absorption and fluorescence of three positional isomers of protonated Rhodamine 19 (o-, m- and p-R19H(+)) were studied in solution and in the gas phase. In solution, strong solvatochromic effects lead to spectral shifts between rhodamine isomers. In contrast, in the gas phase, these species were found to exhibit very similar fluorescence, while pronounced differences were observed in the absorption spectra. The o-R19H(+) was found to have the largest Stokes shift in the gas phase (around 10 nm), suggesting that an intramolecular relaxation operates in the excited electronic state for this isomer. Several mechanisms for this relaxation are proposed, such as the change of the dihedral angle between the carboxyphenyl group and the xanthene chromophore or that between the carboxylic group and the phenyl ring.
DOI 10.1039/c0cp00482k
Additional Notes Received 7 May 2010, Accepted 1 September 2010
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03430
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NEBIS System Number 002005974
Source Database ID WOS-000283262400029
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  author = "Chingin, Konstantin and Balabin, Roman M. and Frankevich, Vladimir and Chen, Huanwen and Barylyuk, Konstantin and Nieckarz, Robert and Fedorov, Alexey and Zenobi, Renato",
  title = "{O}ptical properties of protonated {R}hodamine 19 isomers in solution and in the gas phase",
  journal = "Physical chemistry, chemical physics",
  year = 2010,
  volume = "12",
  number = "42",
  pages = "14121--14127",

E-Citations record created: Tue, 09 Nov 2010, 12:57:18 CET