Photoprocesses in Guest–Host Complexes of a Styryl Dye Thio Derivative with Cucurbiturils
- Autores: Svirida A.D.1, Ivanov D.A.1, Kryukov I.V.1, Petrov N.K.1, Aleksandrova N.A.1, Avakyan V.G.1, Gromov S.P.1,2
- 
							Afiliações: 
							- Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
- Faculty of Chemistry, Moscow State University
 
- Edição: Volume 57, Nº 2 (2023)
- Páginas: 100-107
- Seção: PHOTONICS
- URL: https://rjeid.com/0023-1193/article/view/661513
- DOI: https://doi.org/10.31857/S0023119323020146
- EDN: https://elibrary.ru/NHPEJK
- ID: 661513
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		                                					Resumo
Photoprocesses in aqueous solutions of the styryl dye 1-ethyl-4-{(E)-2-[4(methylthio)phenyl]vinyl}pyridinium perchlorate (1) and its complexes with cucurbit[n]urils (CB[n], n = 6–8) have been studied using the methods of stationary and time-resolved optical spectroscopy. The fluorescence intensity increases by approximately 3 times in 1 : 1 complexes of 1 and CB[6], whereas CB[7] has almost no effect on the fluorescence intensity. In 2 : 1 complexes with CB[8], the photocycloaddition reaction does not occur, with strong fluorescence quenching being associated with the formation of nonreactive dimers. The fluorescence decay kinetics of 1 has two characteristic times, 1.4 and ~130 ps, and changes little in the complexes. The photoinduced intramolecular charge transfer in 1 is an order of magnitude smaller than in the wellknown dye DASPI.
Sobre autores
A. Svirida
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
														Email: ivanovd@photonics.ru
				                					                																			                												                								Moscow, 119421 Russia						
D. Ivanov
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
														Email: ivanovd@photonics.ru
				                					                																			                												                								Россия, 119421, Москва, ул. Новаторов, 7А-1						
I. Kryukov
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
														Email: ivanovd@photonics.ru
				                					                																			                												                								Moscow, 119421 Russia						
N. Petrov
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
														Email: ivanovd@photonics.ru
				                					                																			                												                								Moscow, 119421 Russia						
N. Aleksandrova
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
														Email: ivanovd@photonics.ru
				                					                																			                												                								Moscow, 119421 Russia						
V. Avakyan
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences
														Email: ivanovd@photonics.ru
				                					                																			                												                								Moscow, 119421 Russia						
S. Gromov
Photochemistry Center, Russian Academy of Sciences, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences; Faculty of Chemistry, Moscow State University
							Autor responsável pela correspondência
							Email: ivanovd@photonics.ru
				                					                																			                												                								Moscow, 119421 Russia; Moscow, 119991						
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