| Texto completo | |
| Autor(es): |
de Vries, Wilke
[1]
;
Doerenkamp, Carsten
[2]
;
Zeng, Zhaoyang
[2]
;
de Oliveira, Jr., Marcos
[3]
;
Niehaus, Oliver
[4]
;
Poettgen, Rainer
[4]
;
Studer, Armido
[1]
;
Eckert, Hellmut
[2, 3]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Munster, Inst Organ Chem, Corrensstr 40, D-48149 Munster - Germany
[2] Univ Munster, Inst Phys Chem, Corrensstr 28-30, D-48149 Munster - Germany
[3] Univ Sao Paulo, Inst Fis Sao Paulo, Ave Trabalhador Saocarlense 400, BR-13560590 Sao Carlos, SP - Brazil
[4] Univ Munster, Inst Anorgan & Analyt Chem, Corrensstr 28-30, D-48149 Munster - Germany
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Solid State Chemistry; v. 237, p. 93-98, MAY 2016. |
| Citações Web of Science: | 3 |
| Resumo | |
Inorganic-organic hybrid materials based on amorphous mesoporous silica containing organized nitroxide radicals within its mesopores have been prepared using the micellar self-assembly of TEOS solutions containing the nitroxide functionalized amphiphile (4-(N,N-dimethyl-N-hexadecylammonium)-2,2,6,6-tetramethyl-piperidin-N-ox yl-iodide) (CAT-16). This template has been used both in its pure form and in various mixtures with cetyl trimethylammonium bromide (CTAB). The samples have been characterized by chemical analysis, N-2 sorption studies, magnetic susceptibility measurements, and various spectroscopic methods. While electron paramagnetic resonance (EPR) spectra indicate that the strength of the intermolecular spin-spin interactions can be controlled via the CAT-16/CTAB ratio, nuclear magnetic resonance (NMR) data suggest that these interactions are too weak to facilitate cooperative magnetism. (C) 2016 Elsevier Inc. All rights reserved. (AU) | |
| Processo FAPESP: | 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros |
| Beneficiário: | Edgar Dutra Zanotto |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |
| Processo FAPESP: | 13/23490-3 - Técnicas de ressonância magnética empregadas no estudo da correlação estrutura/propriedades em vidros e vitrocerâmicas fotônicos |
| Beneficiário: | Marcos de Oliveira Junior |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |