CO2 as a supramolecular assembly agent: a route for lamellar materials with a high content of amine groups.
The uptake of carbon dioxide on N-(2-aminoethyl)-3-aminopropyltrimethoxysilane 1 and N-(6-aminohexyl)-3-aminopropyltrimethoxysilane 2 afforded a supramolecular network of bis-silylated ammonium carbamate salts, the hydrolytic polycondensation of which gave rise to structured hybrid materials. Subsequent loss of CO2 was readily achieved upon heating, thus generating materials in which the structure was maintained (well-defined lamellar structure from 2) and contains free amino groups. The accessibility of amine-functionalized groups was shown by their ability to complex transition metal or lanthanide salts.
Alauzun
Johan
J
Laboratoire de Chimie Moléculaire et Organisation du Solide, UMR 5637 CNRS, Université Montpellier II, Sciences et Techniques du Languedoc, Place E. Bataillon, F-34095 Montpellier Cedex 5, France.
Mehdi
Ahmad
A
Reyé
Catherine
C
Corriu
Robert J P
RJ