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      https://www.ias.ac.in/article/fulltext/pram/033/03/0391-0395

    • Keywords

       

      Overtone spectroscopy; CH bond lengths; thermal lens technique

    • Abstract

       

      Vibrational overtone spectra of styrene (liquid) and polystyrene (solid), studied by the laser-induced thermal lens (for ΔV=6) and the conventional near infrared absorption (for ΔV=3–5) techniques, are reported. For polystyrene, the overtone energy-bond length correlation predicts that the aryl CH bonds are ∼0.0005 Å longer than that in benzene, while no such conclusions could be drawn on styrene. Thesp3 CH overtones in polystyrene are observed on the low energy side of the aryl CH overtones.

    • Author Affiliations

       

      T M Abdul Rasheed1 2 K P B Moosad1 V P N Nampoori1 K Sathianandan1 3

      1. Department of Physics, Cochin University of Science and Technology, Cochin - 682 082, India
      2. Department of Physics, M.G.G.A. College, Mahe - 673 311, India
      3. Department of Physics, Kerala University Centre, Kariavattom, Trivandrum - 695 581, India
    • Dates

       
  • Pramana – Journal of Physics | News

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