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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/104/02/0143-0152

    • Keywords

       

      Charge transfer state; acetophenone derivatives

    • Abstract

       

      Stationary fluorescence spectra of four acetophenone derivatives were measured in a number of solvents at several temperatures. For 4′-(1-pyrenyl) acetophenone (PYRA) nanosecond fluorescence decay curves and picosecond time-resolved spectra were recorded. Quantum chemical (INDO/S) calculations of the energies, electronic transitions, oscillator strengths and dipole moments were performed for four different conformers of PYRA. Two models are discussed: (i) TICT state formation; (ii) inversion of two low-lying singlet states.

    • Author Affiliations

       

      J Dobkowski1 Z R Grabowski1 J Waluk1 W Kühnle2 W Rettig3 C Rullière4 W Yang4 J Adamus5 J Gebicki5

      1. Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw - 01-224, Poland
      2. Max-Planck-Institute for Biophysical Chemistry, Göttingen, Germany
      3. Iwan N. Stranski-Institute for Physical and Theoretical Chemistry, Technical University of Berlin, Berlin-12 - 1000, Germany
      4. Centre de Physique Moléculaire Optique et Hertzienne, Université de Bordeaux I, Talence - 33405, France
      5. Institute of Applied Radiation Chemistry, Technical University, Lódź, Poland
    • Dates

       
  • Journal of Chemical Sciences | News

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