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    STUDIA PHYSICA - Issue no. SPECIAL ISSUE / 2001  
         
  Article:   MICROSCOPIC PARAMETERS IN THE EXCITED STATES OF SOME ANTHRACENE DERIVATIVES.

Authors:  DANA DOROHOI, DAN DIMITRIU.
 
       
         
  Abstract:  The results obtained by Takehiro Abe’s model for a non-polar, isotropic liquid and spectral measurements in the visible vibronic band of some anthracene derivatives were used to estimate the electric dipole moments and the polarizabilities in the molecular excited electronic states. The study pointed out the applicability of the Takehiro Abe model in the case of non-polar solutions of the anthracene derivatives. The value of microscopic parameters obtained using the three vibrational electronic bands emphasized very closed values for the electric dipole moment and for the polarizability in the first excited state of anthracene, comparable with those estimated using the value of the wavenumber corresponding to the pure electronic transition (calculated from the wavenumbers of absorption and fluorescence bands). The values of the pure electronic transition in each solvent were used to estimate microscopic parameters of the anthracene derivatives.  
         
     
         
         
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