Issue 24, 2005
From the journal:

Journal of Materials Chemistry

A method for the preparation of transparent mesoporous silica sol–gel monoliths containing grafted organic functional groups

Cheri W. Clavier,a   D. Lynn Rodman,a   Joseph F. Sinski,a   Leonardo R. Allain,a   Hee-Jung Im,a   Yihui Yang,a   Jason C. Clarka  and  Zi-Ling Xue*a  

* Corresponding authors

a Department of Chemistry, The University of Tennessee, Knoxville, Tennessee 37996-1600, USA
E-mail: xue@novell.chem.utk.edu

Abstract

Transparent, crack-free mesoporous silica sol–gel monolith 2 was prepared from the hydrolysis of Si(OMe)4 in MeOH containing ethylene glycol (HOCH2CH2OH). Gradual exposure of the product monolith 1 to MeOH/H2O and then H2O helps prevent cracking of the monolith. Direct reaction of chelating diamine H2N(CH2)2NH(CH2)3Si(OMe)3 with 1 gave diamine-grafted monolith 3. Imprint-grafting of monolith 1 with the Cu2+ complex Cu[H2N(CH2)3Si(OMe)3]42+ yielded monolith 5 grafted with the monoamine ligand H2N(CH2)3Si(O–)3 (APS). BET studies showed that the average pore size in amine-imprint-grafted 5 was ca. 47 Å with a specific surface area of 232 m2 g−1, and the total pore volume was 0.24 cm3 g−1 for all pores of the gel which were less than 174 Å.

Graphical abstract: A method for the preparation of transparent mesoporous silica sol–gel monoliths containing grafted organic functional groups

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Article information

DOI
https://doi.org/10.1039/B417014H
Article type
Paper
Submitted
16 Nov 2004
Accepted
15 Apr 2005
First published
27 Apr 2005

J. Mater. Chem., 2005,15, 2356-2361

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A method for the preparation of transparent mesoporous silica sol–gel monoliths containing grafted organic functional groups

C. W. Clavier, D. L. Rodman, J. F. Sinski, L. R. Allain, H. Im, Y. Yang, J. C. Clark and Z. Xue, J. Mater. Chem., 2005, 15, 2356 DOI: 10.1039/B417014H

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