Journal of Physical Chemistry A

, volume 123 , issue 25 , pages 5199-5205

Radiation-Induced Transformations of C6H6 Molecules in Solid Noble-Gas Matrices: Is Benzene Intrinsically Resistant in Condensed Media?

Irina A Lukianova ¹

Mariia A Lukianova ¹

Elizaveta V Sanochkina ¹

Vladimir I. Feldman ¹

Hide authors affiliations Show authors affiliations: 1 affiliation

Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia |

Publication type: Journal Article

Publication date: 2019-05-31

American Chemical Society (ACS)

Journal of Physical Chemistry A

scimago Q2

wos Q2

SJR: 0.634

CiteScore: 4.8

Impact factor: 2.8

ISSN: 10895639, 15205215

DOI: 10.1021/acs.jpca.9b01137

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PubMed ID: 31150245

Physical and Theoretical Chemistry

Abstract

The radiation resistance of aromatic compounds is one of the key concepts of basic and applied radiation chemistry in condensed phases. Usually, it is attributed to the intrinsic radiation stability of the benzene ring. In this work, we have demonstrated for the first time that the isolated benzene molecules undergo rather efficient radiation-induced degradation in rigid inert media at cryogenic temperatures (comparable to that of aliphatic hydrocarbons), and their stability is essentially determined by the intermolecular relaxation correlating with matrix polarizability. The principal primary products of benzene radiolysis in matrices are phenyl radicals and fulvene. The matrix environment strongly affects the proportion of these species because of external heavy atom effect on the intersystem crossing, which may trigger further reaction pathways. The obtained results may have important implications for the prediction of radiation stability of complex organic systems and polymers. Furthermore, they may contribute to a better understanding of the radiation-induced evolution of aromatic species in cold interstellar media.

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4 citations

Tyurin Daniil

🥼 🤝

PhD in Chemistry

72 publications, 683 citations

h-index: 15

Lomonosov Moscow State University

Computational chemistry

Computational methods in chemistry

Cryogenic technology

EPR spectroscopy

High-performance computing

IR spectroscopy

Interaction of X-ray and synchrotron radiation with matter

Matrix isolation

Molecular modeling

Molecular spectroscopy

Non-covalent Interactions

Non-valent interactions

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Lukianova M. A. et al. Radiation-Induced Transformations of C6H6 Molecules in Solid Noble-Gas Matrices: Is Benzene Intrinsically Resistant in Condensed Media? // Journal of Physical Chemistry A. 2019. Vol. 123. No. 25. pp. 5199-5205.

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Lukianova I. A., Lukianova M. A., Sanochkina E. V., Feldman V. I. Radiation-Induced Transformations of C6H6 Molecules in Solid Noble-Gas Matrices: Is Benzene Intrinsically Resistant in Condensed Media? // Journal of Physical Chemistry A. 2019. Vol. 123. No. 25. pp. 5199-5205.

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