Photonic Sensors, Volume. 3, Issue 2, 168(2013)

Room Temperature Sol-Gel Fabrication and Functionalization for Sensor Applications

George HUYANG1,2, John CANNING1,2、*, Ingemar PETERMANN1,2, David BISHOP3, Andrew McDONAGH3, and Maxwell J. CROSSLEY1
Author Affiliations
  • 1School of Chemistry, The University of Sydney, NSW 2006, Australia
  • 2Interdisciplinary Photonic Laboratories (iPL), School of Chemistry, 222 Madsen Building F09, The University of Sydney, NSW 2006, Australia
  • 3University of Technology Sydney, Broadway NSW 2007, Australia
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    The structure and physical properties of a thin titania sol-gel layer prepared on silicon and silica surfaces were examined. Spectroscopic (FTIR, UV-VIS spectroscopy), refractive index (ellipsometry) and microscopic (light microscopy and SEM/EDS) tools were used to examine both chemical uniformity and physical uniformity of the sol-gel glass layers. The conditions for the fabrication of uniform layers were established, and room temperature dopant incorporation was examined. The absorption bands of porphyrin-containing titania sol-gel layers were characterized. By addition of a metal salt to the titania layer, it was possible to metallate the free-base porphyrin within and change the UV-VIS absorbance of the porphyrin, the basis of metal detection using porphyrins. The metalloporphyrins were detected by localized laser ablation inductive coupled mass spectroscopy (LA-ICP-MS), indicating fairly uniform distribution of metals across the titania surface.

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    George HUYANG, John CANNING, Ingemar PETERMANN, David BISHOP, Andrew McDONAGH, Maxwell J. CROSSLEY. Room Temperature Sol-Gel Fabrication and Functionalization for Sensor Applications[J]. Photonic Sensors, 2013, 3(2): 168

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    Paper Information

    Category: Regular

    Received: Jun. 23, 2012

    Accepted: Jul. 5, 2012

    Published Online: Oct. 24, 2013

    The Author Email: CANNING John (john.canning@sydney.edu.au)

    DOI:10.1007/s13320-012-0075-2

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