Prospects for the Creation of a Photocontrolled Supramolecular Machine Based on a 1,4-Di(azastyryl)benzene Derivative and Cucurbit[7]uril

Prospects for the Creation of a Photocontrolled Supramolecular Machine Based on a 1,4-Di(azastyryl)benzene Derivative and Cucurbit[7]uril Full article

Journal

Molecules
ISSN: 1420-3049

Output data

Year: 2026, Volume: 31, Number: 9, Article number : 1464, Pages count : DOI: 10.3390/molecules31091464

Authors

Atabekyan Levon S. ¹ , Avakyan Vitaly G. ¹ , Nuriev Vyacheslav N. ^2,1 , Medved’ko Alexei V. ^3,1 , Vatsadze Sergey Z. ^2,3 , Gromov Sergey P. ^2,1

Affiliations

1	NRC “Kurchatov Institute”, Academician Kurchatov Square 1, 123182 Moscow, Russia
2	Department of Chemistry, M. V. Lomonosov Moscow State University, Vorob’evy Gory, 119899 Moscow, Russia
3	N. D. Zelinsky Institute of Organic Chemistry, 47 Leninsky Prosp., 119991 Moscow, Russia

The photophysical processes and photochemical reactions of 1,4-di(azastyryl)benzene (1) derivative {[(E,E)-1](ClO4)2} were investigated by absorption, luminescence, and laser kinetic spectroscopy in the water solution. The observed photo processes include dimerization, E-Z isomerization, and intersystem crossing to the triplet state, as well as the complexation [(E,E)-1](ClO4)2 with cucurbit[7]uril (CB[7]). The [(E,E)-1](ClO4)2 dye dimerization was shown to be energetically more favorable in the excited state than in the ground state. The reversible photoinduced migration of the dye dication in the CB[7] cavity takes place as a result of partial exit of the [(E,E)-1]2+ from the cavity and its subsequent conversion to the (E,Z)-isomer in the excited state, which undergoes conversion to the initial complex of {[(E,E)-1]@CB[7]}2+ after returning to the ground state. This photoprocess is of interest in relation to the scientific problem of designing photocontrolled supramolecular machines.

Atabekyan L.S. , Avakyan V.G. , Nuriev V.N. , Medved’ko A.V. , Vatsadze S.Z. , Gromov S.P.
Prospects for the Creation of a Photocontrolled Supramolecular Machine Based on a 1,4-Di(azastyryl)benzene Derivative and Cucurbit[7]uril
Molecules. 2026. V.31. N9. 1464 . DOI: 10.3390/molecules31091464 WOS Scopus OpenAlex

Submitted:	Apr 1, 2026
Published online:	Apr 28, 2026

≡ Web of science:	WOS:001763843800001
≡ Scopus:	2-s2.0-105038401474
≡ OpenAlex:	W7158021384