Ordered mesoporous hybrid thin films with double organic functionality and mixed oxide framework

PAULA C. ANGELOMÉ; GALO J. A. A. SOLER-ILLIA

JOURNAL OF MATERIALS CHEMISTRY

ROYAL SOC CHEMISTRY

Año: 2005 vol. 15 p. 3903 - 3912

0959-9428

Highly ordered mixed framework mesoporous cubic (Im3m) or 2D hexagonal (p6m) thin films of (M12x(Si–R)x)O22x/2 bearing organic groups (M = Ti or Zr, R = propylamine, mercaptopropyl or phenyl, x¡0.2) are obtained by one-pot dip-coating. A second organic function (R9 = hexadecyl, phenyl, sulfonate…) can be added by post-grafting with a molecule presenting a chelating group capable of anchoring to theMsites (phosphate, phosphonate, polyhydroxyphenol, carboxylate…) and a second organic group. This two-step procedure leads to bifunctional accessible mesopores. The role of post-synthesis stabilisation treatments, the alternative processes for template extraction, and the pore accessibility towards a second function are presented and discussed.