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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis and characterization of amorphous mesoporous silica using TEMPO-functionalized amphiphilic templates

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Author(s):
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]
Total Authors: 8
Affiliation:
[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
Total Affiliations: 4
Document type: Journal article
Source: Journal of Solid State Chemistry; v. 237, p. 93-98, MAY 2016.
Web of Science Citations: 3
Abstract

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)

FAPESP's process: 13/23490-3 - Magnetic resonance techniques for the study of Structure/Property correlations in photonic glassy and glass ceramic materials
Grantee:Marcos de Oliveira Junior
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:Edgar Dutra Zanotto
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC