Synthesis of porphyrin-bridged periodic mesoporous organosilica and their catalytic applications

Synthesis of porphyrin-bridged periodic mesoporous organosilica and their catalytic applications Periodic mesoporous organosilicas (PMOs) were prepared by cooperative assembly with corresponding organosilane precursors in the presence of surfactants. Recently, approaches for the preparation of a new class of porphrin-bridged PMOs have been developed. Porphyrin-bridged PMOs were synthesized by direct co-condensation using a thermal sol–gel method or a rapid microwave-assisted method with tetrakis(carboxyphenyl)porphyrin(TCPP)-silsesquioxane (TCPPS) and various silica sources in the presence of templates. These porphyrin PMO exhibited high catalytic activities and selectivity and could be used repeatedly in many kinds of applications owing to easy accessibility, rapid diffusion, and favorable mass transfer for substrates into and out of the mesopores. In addition, the TCPPS incorporated into the PMO walls could effectively defend damage of the ordered structure and also inhibit the leaching of active sites. The current review deals with recent development in the synthesis, characterization, and applications such as hydrogenation, photocatalysis, chiral catalysis, and Baeyer–Villiger oxidation of each of these types of porphyrin-bridged periodic mesoporous silica materials. Research on Chemical Intermediates Springer Journals

Synthesis of porphyrin-bridged periodic mesoporous organosilica and their catalytic applications

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Springer Netherlands
Copyright © 2011 by Springer Science+Business Media B.V.
Chemistry; Physical Chemistry; Catalysis; Inorganic Chemistry
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