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Optical properties of protonated Rhodamine 19 isomers in solution and in the gas phaseстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 6 декабря 2018 г.
- Авторы: Chingin K., Balabin R.M., Frankevich V., Chen H., Barylyuk K., Nieckarz R., Fedorov A., Zenobi R.
- Журнал: Physical Chemistry Chemical Physics
- Том: 12
- Номер: 42
- Год издания: 2010
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 14121
- Последняя страница: 14127
- DOI: 10.1039/c0cp00482k
- Аннотация: 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.
- Добавил в систему: Балабин Роман Михайлович