Delayed fluorescence of dibenzocycloheptene


Bayrakçeken F., Güney M.

Asian Journal of Spectroscopy, vol.15, no.1-4, pp.21-26, 2011 (Refereed Journals of Other Institutions) identifier

  • Publication Type: Article / Article
  • Volume: 15 Issue: 1-4
  • Publication Date: 2011
  • Title of Journal : Asian Journal of Spectroscopy
  • Page Numbers: pp.21-26
  • Keywords: 5H-Dibenzo(a,d)cycloheptene, B-type of delayed fluorescence, Phosphorescence, Prompt fluorescence, Raman scattering, Triplet decay

Abstract

Some photophysical and photochemical properties of 5H-dibenzo(a,d) cycloheptene have been measured including anti-Stokes scattering, prompt fluorescence, B-type of delayed fluorescence, phosphorescence and T1 - Tn absorption spectra. Quantum yield and decay parameters for the triplet state as a function of temperature have also been measured. The results are discussed and compared to those of molecules with similar structures and decay time of B-type fluorescence is reported here for the first time for dibenzocycloheptene. Stokes and anti-Stokes Raman scattering is observed on phosphorescence spectrum at 77K in methylcyclohexane.and anti-Stokes Raman scattering is observed very strongly on phosphorescence spectrum.