Kinetics and mechanism of donoracceptor azulenic optical limiting molecules Academic Article uri icon


  • The transient absorption spectra and kinetics of ten new donor-acceptor azulenic molecules, after excitation of the charge-transfer band, have been studied by means of ultrafast transient spectroscopy. All of the molecules show intense and broad reverse saturable absorption bands in the visible region, which appear within the excitation pulse (=1 ps), and decay with picosecond lifetimes. The early time steps of the photochemical mechanism of these azulenes are proposed. Owing to the high absorption cross-section, fast kinetics and broad spectral response, these molecules may serve as the active media for optical limiting devices.

published proceedings

  • Chemical Physics Letters

author list (cited authors)

  • Oulianov, D. A., Asato, A. E., & Rentzepis, P. M.

citation count

  • 9

complete list of authors

  • Oulianov, DA||Asato, AE||Rentzepis, PM

publication date

  • September 2000