Surface Functionalization of Silica Particles with Phthalocyanine

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Phthalocyanine moieties have been introduced onto mesoporous sphere-shaped silica particles prepared by the controlled hydrolysis of tetraethyl orthosilicate followed by surface modification with 3-aminopropylsilane by sol–gel process. Particles from sol–gel process were of size ranging from 190 to 500 nm. The surface modification reaction with amino groups was accomplished with a content of 1.2 mmol/g. Salt linkage was successfully formed between amino group on the silica surface and sulfonate group in phthalocyanine moieties by investigation of energy dispersive spectroscopy.