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Excitonic Coupling and Femtosecond Relaxation of Zinc Porphyrin Oligomers Linked with Triazole Bridge: Dynamics and Modelingстатья
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: 28 октября 2016 г.
- Авторы: Bukreev Alexey, Mikhailov Konstantin, Shelaev Ivan, Gostev Fedor, Polevaya Yuliya, Tyurin Vladimir, Beletskaya Irina, Umansky Stanislav, Nadtochenko Victor
- Журнал: The Journal of Physical Chemistry A: Molecules, Clusters, and Aerosols
- Том: 120
- Номер: 12
- Год издания: 2016
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 1961
- Последняя страница: 1970
- DOI: 10.1021/acs.jpca.5b11025
- Аннотация: The synthesis of new zinc porphyrin oligomers linked by a triazole bridge was carried out via "click" reaction. A split in the porphyrin oligomer B-band was observed. It was considered as evidence of exciton-excitonic coupling. The relaxation of excited states in Q-band porphyrin oligomers was studied by the femtosecond laser spectroscopy technique with a 20 fs pump pulse. The transient oscillations of two B-band excitonic peaks have a pi-radian shift. For explanation of the coherent oscillation, a theoretical model was developed. The model considered the combination of the exciton-excitonic coupling between porphyrin rings in dimer and weak exciton-vibronic coupling in one porphyrin ring. By varying the values of the structural parameters of porphyrins (the strength values of this couplings and measure of symmetry breaking), we obtained correspondence between the, experimental data (phase shift and amplitudes of the spectrum oscillations) and the predictions of the-model developed here.
- Добавил в систему: Тюрин Владимир Сергеевич