Trapping Copper Phthalocyanine in a Silica Sono-Xerogel |
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Authors: | R Litrán E Blanco M Ramírez-del-solar L Esquivias |
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Institution: | (1) Departamento de Física de la Materia Condensada, Universidad de Cádiz, Puerto Real, Apdo. 40, 11510 Cádiz, Spain |
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Abstract: | A copper phthalocyanine (CuPc) has been encapsulated in silica. The trapping effects were studied comparing the UV-Vis absorption
spectra of some CuPc solutions and composites prepared under different conditions. The trapped organic molecules’ stability
was monitored during the gelation and drying processes. Leachability test have been carried out with the aim of checking the
trapping efficiency. Hydrolysis water of pH=2 and a molar ratioR
w
=6 mol acid H2O/mol TMOS leads to a higher CuPc stacking angle homogeneity. The increase of Pc induces a narrower mesopore distribution
and helps the stabilization of the composite. |
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Keywords: | copper phthalocyanine sono-gel UV-Vis absorption spectra composite mesopores |
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