caa a22 4500 469056568 CHVBK 20180323132845.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1163/156856792X00010 doi (NATIONALLICENCE)springer-10.1163/156856792X00010 Fluorescence spectra and chemical species of fluorescein molecules adsorbed on a calcinated porous Vycor glass [Elektronische Daten] [T. Fujii, A. Ishii, N. Takusagawa, M. Anpo] Properties of fluorescence and the excitation spectra of fluorescein molecules adsorbed onto a calcinated (773 K) porous Vycor glass have been investigated as a function of the amount of adsorbed dye (the surface coverage, θ = 0.00051 and 0.0098). The fluorescence and fluorescence-excitation spectra of fluorescein adsorbed onto Vycor glass showed the spectrum only due to cation species at θ = 0.00051. On the other hand, the spectra observed at θ = 0.0098 suggested the presence of cation, anion, and dianion species on the surface of Vycor glass. These results indicated the existence of at least two different types of adsorption sites involving the Brønsted acid site on the surfaces of Vycor glass. Springer, 1992 Fujii T. Department of Chemistry and Material Engineering, Shinshu University, 380, Wakasato, Nagano, Japan aut Ishii A. Department of Chemistry and Material Engineering, Shinshu University, 380, Wakasato, Nagano, Japan aut Takusagawa N. Department of Chemistry and Material Engineering, Shinshu University, 380, Wakasato, Nagano, Japan aut Anpo M. Department of Applied Chemistry, University of Osaka Prefecture, 591, Sakai, Osaka, Japan aut Research on Chemical Intermediates Springer Netherlands 17/1(1992-03-01), 1-14 0922-6168 17:1<1 1992 17 11164 https://doi.org/10.1163/156856792X00010 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1163/156856792X00010 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fujii T. Department of Chemistry and Material Engineering, Shinshu University, 380, Wakasato, Nagano, Japan aut NATIONALLICENCE 700 1- Ishii A. Department of Chemistry and Material Engineering, Shinshu University, 380, Wakasato, Nagano, Japan aut NATIONALLICENCE 700 1- Takusagawa N. Department of Chemistry and Material Engineering, Shinshu University, 380, Wakasato, Nagano, Japan aut NATIONALLICENCE 700 1- Anpo M. Department of Applied Chemistry, University of Osaka Prefecture, 591, Sakai, Osaka, Japan aut NATIONALLICENCE 773 0- Research on Chemical Intermediates Springer Netherlands 17/1(1992-03-01), 1-14 0922-6168 17:1<1 1992 17 11164 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer