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Photonic Crystals from Ordered Mesoporous Thin‐Film Functional Building Blocks
Author(s) -
Fuertes M. C.,
LópezAlcaraz F. J.,
Marchi M. C.,
Troiani H. E.,
Luca V.,
Míguez H.,
SolerIllia G. J. A. A.
Publication year - 2007
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200601190
Subject(s) - materials science , mesoporous material , photonics , photonic crystal , porosity , planar , band gap , molecule , sorption , thin film , optoelectronics , porous medium , nanotechnology , capillary action , composite material , organic chemistry , chemistry , computer graphics (images) , adsorption , computer science , catalysis
Environment‐sensitive Bragg reflectors are built using functional mesoporous thin films as building blocks. Tuning 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 a 10–40 nm photonic bandgap (PBG) shift. Organic functions added to the pore surface change the response, permitting tailoring of the selectivity towards small‐size molecules.