Photoprocesses in Derivatives of 1,4- and 1,3-Diazadistyryldibenzenes

Levon S Atabekyan; Alexandra Y Freidzon; Dmitry S Ionov; Vyacheslav N Nuriev; Alexey V Medved'ko; Sergey Z Vatsadze; Sergey P Gromov; Alexander K Chibisov

doi:10.3390/ijms232315346

Photoprocesses in Derivatives of 1,4- and 1,3-Diazadistyryldibenzenes

Int J Mol Sci. 2022 Dec 5;23(23):15346. doi: 10.3390/ijms232315346.

Authors

Levon S Atabekyan¹, Alexandra Y Freidzon^{1

2}, Dmitry S Ionov¹, Vyacheslav N Nuriev^{1

3}, Alexey V Medved'ko^{1

4}, Sergey Z Vatsadze^{1

3}, Sergey P Gromov^{1

3}, Alexander K Chibisov¹

Affiliations

¹ Photochemistry Center of RAS, FSRC "Crystallography and Photonics", Russian Academy of Sciences, Novatorov Str. 7A-1, 119421 Moscow, Russia.
² Institute of Nanoengineering in Electronics, Spintronics and Photonics, National Research Nuclear University MEPhI, Kashirskoye Shosse, 31, 115409 Moscow, Russia.
³ Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia.
⁴ N.D. Zelinsky Institute of Organic Chemistry RAS, Leninsky Prosp. 47, 119991 Moscow, Russia.

Abstract

Photoprocesses in 1,4-diazadistyrylbenzene (1) and 1,3-diazadistyrylbenzene derivative (2) diperchlorates in MeCN were studied by absorption, luminescence, and kinetic laser spectroscopies. For compound 1, trans-cis-photoisomerization and intersystem crossing to a triplet state are observed. For compound 2, photoelectrocyclization is suggested. Quantum chemical calculations of diazadistyrylbenzene structures in the ground and excited states were carried out. The schemes for photoreactions were proposed.

Keywords: density functional theory; diazadistyrylbenzene; electrocyclization; fluorescence; laser photolysis; trans-cis-isomerization; triplet state.

MeSH terms

Kinetics
Luminescence*
Spectrum Analysis

Abstract

MeSH terms

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