“Photonic Crystals from Ordered Mesoporous Thin Film Functional Building Blocks”

M.C. FUERTES, F.J. LÓPEZ-ALCARAZ, M.C. MARCHI, H. E. TROIANI, V. LUCA, H. MÍGUEZ, G. J. , G. J. A.A. SOLLER ILLIA

ADVANCED FUNCTIONAL MATERIALS

WILEY-V C H VERLAG GMBH

Año: 2007 p. 1247 - 1254

1616-301X

Environmental sentitive Bragg reflectors are buiild using mesoporous thin films as building blocks. Tunning of optical properties is achieved by changing the composition or porosity of the slabs or the introduction of planar defects. Sorption or capillary condensation of molecules into the pore system results in 10-40 nm photonic band gap (PBG)shift. Organic functions added to the pore surface change the response, permiting tailoring of the selectivity towards small size molecules.