Positive Hole Transfer Upon Irradiation of Frozen Alkylbenzene Solutions in Freonic Matrices at 77 K |
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| Authors: | A V Egorov A A Zezin and V I Feldman |
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| Institution: | (1) Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 123057, Russia;(2) Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, ul. Profsoyuznaya 70, Moscow, 117393, Russia;(3) Karpov Institute of Physical Chemistry, Russian Federal Research Center, ul. Vorontsovo pole 10, Moscow, 103064, Russia |
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| Abstract: | The process of positive hole transfer between alkylbenzene molecules of various structures occurring upon irradiation in electron-scavenging (freonic) matrices at 77 K was studied by ESR. The factors controlling the efficiency and direction of this process were analyzed. In the case of the ethylbenzene–toluene pair, it was shown that the direction of hole transfer depends on the conformation of the ethylbenzene radical cation. If the conformation effects are absent, the hole transfer occurs in accordance with the gas-phase ionization potentials (IP) and appears to be efficient, provided that the difference in the IP values is greater than 0.3 eV. |
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