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Photochemical Properties of 1-(9-Phehanthryl)-2-(2-Quinolyl)ethylene

  • Photochemistry
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Abstract

Spectral and photochemical properties of 1-(9-phehanthryl)-2-(2-quinolyl)ethylene (9Ph2QE) in neutral and protonated forms have been investigated. It has been found that both isomers of 9Ph2QE are photoactive. The quantum yield of trans–cis photoisomerization (ϕ tc = 0.47) in the neutral form is typical of the diabatic photoisomerization; on passing to the protonated form, ϕ tc increases up to 0.70. Thus, the double annelation of the 2-styrylquinoline phenyl group to form 9Ph2QE makes it possible to conserve the α-effect, which consists in an increase in the quantum yield to ϕ tc > 0.5 on passing from the neutral to protonated form, whereas the effect disappears for other types of annelation (naphthylquinolylethylenes, 1-(9-anthryl)-2-(2-quinolyl)ethylene).

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    M. F. Budyka & V. M. Li

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  1. M. F. Budyka
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  2. V. M. Li
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Correspondence to M. F. Budyka.

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Original Russian Text © M.F. Budyka, V.M. Li, 2018, published in Khimiya Vysokikh Energii, 2018, Vol. 52, No. 2, pp. 89–93.

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Budyka, M.F., Li, V.M. Photochemical Properties of 1-(9-Phehanthryl)-2-(2-Quinolyl)ethylene. High Energy Chem 52, 103–107 (2018). https://doi.org/10.1134/S0018143918020066

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  • DOI: https://doi.org/10.1134/S0018143918020066

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