Photophysics of a pyrene probe grafted onto silanized glass fiber surfaces

Glass fibers have been silanized with γ-aminopropyltriethoxysilane. 1-pyrenesulphonyl chloride (PSC) has been grafted onto the fibers via adduct formation with the amine functionality. Absorption spectra from SPC stock solutions shows aggregation. Emission spectra from the fibers also reveal aggregation of the cromophore at extremely low concentration (10⁻⁹ mol/g).This work has been supported by projects CAM 247/92 and CICYT MAT93-0823