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CONTRIBUTION A L'ETUDE DE LA LUMINESCENCE DIFFEREE DE COLORANTS EN MILIEU RIGIDE. PHOTOIONISATION DE LA FLUORESCEINE DANS L'ACIDE BORIQUE PAR UN PROCESSUS A DEUX PHOTONS
Author(s) -
LESCLAUX ROBERT,
OHAYON SYLVAIN,
JOUSSOTDUBIEN JACQUES
Publication year - 1970
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1970.tb06012.x
Subject(s) - luminescence , thermoluminescence , chemistry , proton , photochemistry , materials science , physics , optics , quantum mechanics
— A study of the delayed luminescence and thermoluminescence of fluorescein and others dyes in boric acid glass gives evidence of photoionisation of these compounds. To account for the energetic aspect of the photoionisation, a two photon process involving solute‐solvent proton exchange is proposed. The participation of the heterogeneous structure of the glass in the mechanism of the photoionisation is confirmed.