Published in

American Chemical Society, Journal of Physical Chemistry B (Soft Condensed Matter and Biophysical Chemistry), 3(109), p. 1239-1242, 2004

DOI: 10.1021/jp0471397

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Time Resolved Ultraviolet Photoluminescence of Mesoporous Silica

Journal article published in 2005 by Alberto Anedda, Carlo M. Carbonaro, Francesca Clemente, Riccardo Corpino, P. Carlo Ricci ORCID
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

We studied the optical properties of sol-gel synthesized porous silica excited by synchrotron radiation in the 4-10 eV range. The spectral and temporal characteristics of the ultraviolet photoluminescence at about 3.7 eV are reported. The UV emission results from the contribution of two different centers: the first one centered at 3.7 eV with a decay time of 2.0 ns and the second one peaked at 3.9 eV with a decay time of 20 ns. We propose to assign the observed luminescence to different interacting surface silanols.