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Porphyrinosilica and metalloporphyrinosilica: hybrid organic-inorganic materials prepared by sol-gel processing
IAMAMOTO,YASSUKO
SACCO,HÉRICA C.
BIAZZOTTO,JULIANA C.
CIUFFI,KATIA J.
SERRA,OSVALDO A.
Location: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000100008

New materials porphyrinosilica and metalloporphyrinosilica template have been obtained by a sol-gel processing where functionalyzed porphyrins and metalloporphyrins "building blocks" were assembled into a three-dimensional silicate network. The optimized conditions for preparation of these materials are revised. The monomer precursors porphyrinopropylsilyl and metalloporphyrinopropylsilyl preparation reactions and subsequent one pot sol-gel processing with tetraethoxysilane are discussed. In the case of metalloporphyrins the nitrogen base coordinates to the central metal and acts as a template in the molecular imprinting technique. UV-visible absorption spectroscopy, thermogravimetric analysis, electron paramagnetic resonance, nuclear magnetic spectra, infrared spectra, luminescence spectra, surface area and electron spectroscopy imaging of the materials are used to characterize the prepared materials. The catalytic activities of these metalloporphyrinosilica- template are compared.

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Porphyrinosilica and metalloporphyrinosilica: hybrid organic-inorganic materials prepared by sol-gel processing
Id. 234197
Idioma inglés
Titulo Porphyrinosilica and metalloporphyrinosilica: hybrid organic-inorganic materials prepared by sol-gel processing
Autor(es) IAMAMOTO,YASSUKO
SACCO,HÉRICA C.
BIAZZOTTO,JULIANA C.
CIUFFI,KATIA J.
SERRA,OSVALDO A.
Location http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000100008
Versión 1.0
Estado Final
Descripción New materials porphyrinosilica and metalloporphyrinosilica template have been obtained by a sol-gel processing where functionalyzed porphyrins and metalloporphyrins "building blocks" were assembled into a three-dimensional silicate network. The optimized conditions for preparation of these materials are revised. The monomer precursors porphyrinopropylsilyl and metalloporphyrinopropylsilyl preparation reactions and subsequent one pot sol-gel processing with tetraethoxysilane are discussed. In the case of metalloporphyrins the nitrogen base coordinates to the central metal and acts as a template in the molecular imprinting technique. UV-visible absorption spectroscopy, thermogravimetric analysis, electron paramagnetic resonance, nuclear magnetic spectra, infrared spectra, luminescence spectra, surface area and electron spectroscopy imaging of the materials are used to characterize the prepared materials. The catalytic activities of these metalloporphyrinosilica- template are compared.
Tipo text/html
Palabras clave metalloporphyrin silica
Tipo de recurso journal article
Tipo de Interactividad Expositivo
Nivel de Interactividad muy bajo
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Estructura Atomic
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Fecha de contribución 22-may-2005
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