One-Pot Self-Assembling of Mesostructured Silica Films and Membranes Functionalised with Fullerene Derivatives

P. INNOCENZI; P. FALCARO; S. SCHERGNA; M. MAGGINI; E. MENNA; H. AMENITSCH; G.J.A.A. SOLER-ILLIA; D. GROSSO; C SANCHEZ

JOURNAL OF MATERIALS CHEMISTRY

Año: 2004 vol. 14 p. 1838 - 1842

0959-9428

Three fullerene derivatives have been employed with amphiphilic block copolymers both as structuredirecting agents and doping molecules in one-pot synthesis of self-assembled 2D-hexagonal and cubic porous silica mesostructures, in the form of bulk materials, thick cast films and thin films through an evaporation-induced self-assembling procedure. Thermal calcination of the samples at 280 uC almost completely removed the block copolymer from the silica matrix without substantial loss of the fullerene additive, as demonstrated by FT-Raman spectra in which a clear signature of the fullerene Ag mode at 1467 cm21 was still clearly observed. Upon irradiation with laser light at 632.8 nm, the fullerene-doped mesostructured materials exhibited photoluminescence at room temperature, which was not observed in the silica matrix.uC almost completely removed the block copolymer from the silica matrix without substantial loss of the fullerene additive, as demonstrated by FT-Raman spectra in which a clear signature of the fullerene Ag mode at 1467 cm21 was still clearly observed. Upon irradiation with laser light at 632.8 nm, the fullerene-doped mesostructured materials exhibited photoluminescence at room temperature, which was not observed in the silica matrix.g mode at 1467 cm21 was still clearly observed. Upon irradiation with laser light at 632.8 nm, the fullerene-doped mesostructured materials exhibited photoluminescence at room temperature, which was not observed in the silica matrix.21 was still clearly observed. Upon irradiation with laser light at 632.8 nm, the fullerene-doped mesostructured materials exhibited photoluminescence at room temperature, which was not observed in the silica matrix.