On the ionization potential of a solute molecule in hydrocarbon solutions: Effect of temperature and phase |
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Authors: | J Bullot M Gauthier |
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Institution: | Laboratoire de Physico-Chimie des Rayonnements, Associé au CNRS, Université Paris-Sud, 91405-Orsay, France;E.R. 98, Laboratoire de Chimie Physique, Université Paris-Sud, 91405-Orsay, France |
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Abstract: | It is shown that the ionization potential I of N,N,N′,N′-tetramethylparaphenylenediamine (TMPD) dissolved in several hydrocarbons is constant in the solid phase from 77 K up to the melting point TM and suffers an abrupt decrease at this temperature ranging from 0.65 eV for tetramethylsilane to 0.42 eV for n-hexane. The meaning of the I jump at TM is discussed. From the invariance of I, it is concluded that the energy of the excess electron, V0, is constant in the solid phase. |
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