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An effective way of trapping phthalocyanines inside porous silica has been achieved when an aqueous solution of these macrocyclic species is reacted in situ with silicon alkoxide. The resultant porous gel network can encapsulate a myriad of metal phthalocyanine molecules at relatively high concentrations and, most importantly, in a disaggregated way. By employing this method metal sulfophthalocyanines...
The aggregation properties of metallic 2,9,6,23-tetrasulfophthalocyanines MTSPc (M=Fe, Co, Ni, Cu and Al) embedded in transparent monolithic gels of silica prepared by the sol-gel method have been followed by UV-Vis spectroscopy. These studies are necessary to follow the various complex stages of the hydrolysis-condensation reactions forming the monolithic gels. In view of the fact that under the...
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