Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Modification of molecular sieves MCM-41 and SBA-15 with covalently grafted pyromellitimide and 1,4,5,8-naphthalenediimide

Texto completo
Autor(es):
Trindade, Fabiane Jesus [1] ; Rey, Jose Fernando Queiruga [1] ; Brochsztain, Sergio [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Fed ABC, Petr Nanotechnol Grp, BR-09210170 Santo Andre, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Journal of Colloid and Interface Science; v. 368, p. 34-40, FEB 15 2012.
Citações Web of Science: 10
Resumo

This article describes the covalent grafting of pyromellitimide and 1,4,5,8-naphthalenediimide, which are organic semiconductors with very interesting electro-optical properties, onto the walls of mesoporous molecular sieves. The mesoporous materials MCM-41 and SBA-15 were first treated with 3-aminopropyl-triethoxysilane, generating materials with a surface coverage of primary amino groups. These materials were further reacted with either pyromellitic dianhydride or 1,4,5,8-naphthalenetetracarboxylic dianhydride, generating surface-bound pyromellitimide or 1,4,5,8-naphthalenediimide, respectively. The success of the modification reactions was confirmed by elemental and thermogravimetric analyses, X-ray diffraction patterns and infrared, reflectance and fluorescence spectroscopies. The results indicated that the mesoporous structure of the new materials was preserved after the modification reactions and that the chromophores were included inside the mesoporous channels with stacked aromatic rings. (C) 2011 Elsevier Inc. All rights reserved. (AU)

Processo FAPESP: 08/57940-7 - Produção de biocombustíveis por craqueamento fotoquímico de óleos vegetais utilizando imidas aromáticas suportadas em sílicas mesoporosas como sensitizadores
Beneficiário:Sergio Brochsztain
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Regular
Processo FAPESP: 05/51104-4 - Preparação de cápsulas ocas revestidas com camadas de imidas aromáticas para o armazenamento de energia solar
Beneficiário:Sergio Brochsztain
Linha de fomento: Auxílio à Pesquisa - Regular