Photonic Crystals from Ordered Mesoporous Thin-Film Functional Building Blocks

Authors

  • M. C. Fuertes,

    1. Unidad de Actividad Química — Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Av. Gral Paz 1499 B1650KNA San Martín, Buenos Aires (Argentina)
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  • F. J. López-Alcaraz,

    1. Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas, Avda. Américo Vespucio s/n, Isla de La Cartuja, 41092 Sevilla (Spain)
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  • M. C. Marchi,

    1. Facultad de Ciencias Exactas y Naturales, INQUIMAE-DQIAQF, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, C1428EHA Buenos Aires (Argentina)
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  • H. E. Troiani,

    1. CONICET, Avda. Rivadavia 1917, C1033AAJ Buenos Aires (Argentina)
    2. Centro Atómico Bariloche (CNEA), and Instituto Balseiro, San Carlos de Bariloche, 8400 (Argentina)
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  • V. Luca,

    1. Australian Nuclear Science and Technology Organization, Institute of Materials & Engineering Sciences, New Illawarra Road, Lucas Heights, NSW 2234 (Australia)
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  • H. Míguez,

    1. Instituto de Ciencia de Materiales de Sevilla, Consejo Superior de Investigaciones Científicas, Avda. Américo Vespucio s/n, Isla de La Cartuja, 41092 Sevilla (Spain)
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  • G. J. A. A. Soler-Illia

    1. Unidad de Actividad Química — Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Av. Gral Paz 1499 B1650KNA San Martín, Buenos Aires (Argentina)
    2. CONICET, Avda. Rivadavia 1917, C1033AAJ Buenos Aires (Argentina)
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  • This work is protected under Spanish Patent P200602405, priority date September 22nd, 2006. This work has been realized in the framework of a joint Spanish–Argentinian cooperation project CSIC–CONICET (Grant AR2005-0078). The work is partially funded by aCONICET (PIP 5191, fellowship for M.C.F.), ANPCyT (Grants PICT 06-12057, PICT 06-12345), and Gabbos (PERiodically Organized Nanostructures project). The work is partially funded by the Spanish Ministry of Science and Education under grant MAT2004-03028. The 2D SAXS was funded by LNLS, Campinas, Brazil (D11A-SAS #4643/05 and 4785/05). Authors are indebted to Prof. I. Torriani and T. Plivelic for assistance in SAXS, and to Centro de Microscopías Avanzadas UBA, for access to the FESEM. G.J.A.A.S.I. and H.E.T. are members of CONICET. J.L.-A. thanks CSIC for a last year undergraduate scholarship.

Abstract

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.

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