We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Photoprocesses in Guest–Host Complexes of a Styryl Dye Thio Derivative with Cucurbiturils.
- Authors
Svirida, A. D.; Ivanov, D. A.; Kryukov, I. V.; Petrov, N. Kh.; Aleksandrova, N. A.; Avakyan, V. G.; Gromov, S. P.
- Abstract
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 well-known dye DASPI.
- Subjects
RING formation (Chemistry); INTRAMOLECULAR charge transfer; CUCURBITURIL; OPTICAL spectroscopy; TIME-resolved spectroscopy; FLUORESCENCE quenching; DYES &; dyeing
- Publication
High Energy Chemistry, 2023, Vol 57, Issue 2, p109
- ISSN
0018-1439
- Publication type
Article
- DOI
10.1134/S0018143923020145