Laser-induced absorption and fluorescence studies of photochromic Schiff bases

K. Kownacki, A. Mordzinski, R. Wilbrandt, A. Grabowska

    Research output: Contribution to journalJournal articleResearch


    Three photochromic Schiff bases: N-salicylideneaniline (SA), N-salicylidene-1-naphthylamine (SN), and N,N-bis-(salicylidene)-p-phenylenediamine (Bsp), were studied in acetonitrile by means of steady-state and time-resolved absorption and fluorescence spectroscopy, as well as semiempirical quantum chemical calculations. In all these molecules, the transient absorption and two-step laser-induced fluorescence spectra of long-lived transients are remarkably similar. The photochromic species is tentatively assigned to the non-hydrogen bonded form of the proton transfer reaction product with a considerable contribution of zwitterionic character.
    Original languageEnglish
    JournalChemical Physics Letters
    Issue number3
    Pages (from-to)270-276
    Publication statusPublished - 1994


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