N. E. Belikov, A. Yu. Lukin, S. D. Varfolomeev, I. I. Levina, L. E. Petrovskaya, O. V. Demina, V. A. Barachevskiĭ, A. A. Khodonov, “Spectral study of the structure and properties of complexes of unsubstituted indoline spiropyran with aluminum ions”, Optics and Spectroscopy, 2022, Volume 130, Issue 5,Pages <nobr>681

5th Memorial Symposium "Molecular Photonics" dedicated to the memory of Academician A.N.Terenin, May 6, 2021 St. Petersburg, Russia
Spectroscopy of condensed state

Spectral study of the structure and properties of complexes of unsubstituted indoline spiropyran with aluminum ions

N. E. Belikov^a, A. Yu. Lukin^b, S. D. Varfolomeev^a, I. I. Levina^a, L. E. Petrovskaya^c, O. V. Demina^a, V. A. Barachevskiĭ^d, A. A. Khodonov^a

^a Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 119334 Moscow, Russia
^b MIREA — Russian Technological University, 119571 Moscow, Russia
^c M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997 Moscow, Russia
^d Photochemistry Centre, Russian Academy of Sciences, 119421 Moscow, Russia

Abstract: The methods of absorption electronic and NMR spectroscopy were used to study the processes of complexation during the interaction of molecules of unsubstituted indoline spiropyran with aluminum salts. The mechanism of formation and structure of complexes of two types has been established. Negative photochromism of the complex of the merocyanine form of spiropyran with aluminum ions was found. The stability of metal complexes to the action of various agents has been investigated.

Keywords: photochromism, spiropyrans, metal complexes, aluminum salts, electron spectroscopy, NMR spectroscopy.

Received: 23.11.2021
Revised: 26.01.2022
Accepted: 08.02.2022

DOI: 10.21883/OS.2022.05.52421.10-22