Issue 32, 2010
From the journal:

Dalton Transactions

Self-assembly of layered organosilicas based on weak intermolecular interactions

Eric Besson,a   Ahmad Mehdi,*a   Catherine Reyé,a   Philippe Gaveaub  and  Robert J. P. Corriua  

* Corresponding authors

a Institut Charles Gerhardt, Chimie Moléculaire et Organisation du Solide, Université Montpellier 2, cc 1701. Place E., Bataillon, Montpellier Cedex 5, France
E-mail: ahmad.mehdi@univ-montp2.fr
Fax: +33 4 6714 38 52
Tel: _33 4 67 14 38 32

b Institut Charles Gerhardt, RMN du Solide, Université Montpellier 2, cc 026. Place E., Bataillon, Montpellier Cedex 5, France
Tel: +33 4 67 14 35 45

Abstract

New layered hybrid organic–inorganic materials were obtained directly by hydrolysis and polycondensation of monosilylated precursors of type (EtO)3Si(CH2)3NH(C[double bond, length as m-dash]O)NHCnH2n+1 (n = 3, 8, 12 and 16). These precursors were easily prepared by reaction between commercially available triethoxysilylpropylisocyanate and primary aminoalkanes. The obtained materials were characterized by combining elemental analysis, X-ray powder diffraction, 13C, 29Si NMR and FT-IR spectroscopies. They were found to be well condensed, and stable in water. We showed that their formation results from a cooperative effect between hydrogen bonding interactions originating from ureido groups and hydrophobic interactions between the long alkyl chains. There is no formation of material when n = 2, or from (EtO)3SiCnH2n+1 when n = 18, thus proving that both types of weak intermolecular interactions are required. The chelating property of these materials towards europium(III) ions was tested.

Graphical abstract: Self-assembly of layered organosilicas based on weak intermolecular interactions

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Article information

DOI
https://doi.org/10.1039/C0DT00117A
Article type
Paper
Submitted
11 Mar 2010
Accepted
11 Jun 2010
First published
08 Jul 2010

Dalton Trans., 2010,39, 7534-7539

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Self-assembly of layered organosilicas based on weak intermolecular interactions

E. Besson, A. Mehdi, C. Reyé, P. Gaveau and R. J. P. Corriu, Dalton Trans., 2010, 39, 7534 DOI: 10.1039/C0DT00117A

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