• Correlative studies on the absorption and emission characteristics of isomeric chlorobenzonitriles

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      https://www.ias.ac.in/article/fulltext/jcsc/095/04/0409-0419

    • Keywords

       

      Isomeric chlorobenzonitriles; dipolemoment; charge transfercharacter; internal heavy atom effect; radiative and nonradiative rates

    • Abstract

       

      Absorption, fluorescence and phosphorescence characteristics of isomeric chlorobenzonitriles have been studied and similarities and differences in these have been noted and compared with those of analogous compounds reported in the literature. The variations in absorption spectral characteristics have been explained and the correlation between the dipole moments of the molecules and the energy of the energy of the para isomers has been elucidated. Analyses of the phosphorescence data have led to the conclusion that internal heavy atom spin-orbit coupling effect is important in the chlorobenzonitriles and that the radiative and nonradiative rates from their triplet states may be reasonably rationalized on this basis.

    • Author Affiliations

       

      A K Maiti1 S K Sarkar1 G S Kastha1

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

       
  • Journal of Chemical Sciences | News

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