Matrix and temperature effects on the relaxation of large molecules: A simultaneous time and spectral study Academic Article uri icon


  • We present data of picosecond time-resolved unrelaxed and relaxed emission spectra of naphthazarin (H2NP) in low-temperature matrices. Risetime and decay rates of the fluorescence originating from individual excited state vibronic levels suggest that the relaxation does not follow the predicted statistical behavior, but rather proceeds via a specific pathway. The kinetic data also suggests that the proton translocation between the two oxygens may be described by a quantum mechanical mechanism. Variations with temperature and size of the host matrix molecules have been studied and their influence on the relaxation mechanism is discussed. © 1986 American Institute of Physics.

author list (cited authors)

  • Huppert, D., & Rentzepis, P. M.

citation count

  • 1

publication date

  • January 1987