• Semiconductive properties of biologically important compounds: Gas adsorption effect on vitamin A (alcohol and acetate)

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    • Keywords


      Organic semiconductors; gas adsorption effect; gas adsorption kinetics; semiconductive study

    • Abstract


      The change in semiconductive properties of vitamin A (alcohol and acetate) after adsorption of various vapours on its crystallite surface has been studied at a constant sample temperature. A rapid enhancement in the semi-conductivity has been observed. The rise in conductivity has been found to be exponential with increasing vapour pressure of the adsorbed gas. It has been suggested that charge transfer (CT) interaction may be responsible for such conductivity change. The adsorption process being efficiently reversible this CT complex is weakly bound.

      The biological implication of these observations is discussed.

    • Author Affiliations


      Biswanath Mallik1 Alpana Ghosh1 T N Misra1

      1. Optics Department, Indian Association for the Cultivation of Science, Jadavpur, Calcutta - 700 032
    • Dates

  • Journal of Chemical Sciences | News

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