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Bioanalogous Recognition with Sol-Gel Thin Films and Nanoparticles in Harsh Environments

Published online by Cambridge University Press:  01 February 2011

Peter A. Lieberzeit ,
Adeel Afzal ,
Adnan Mujahid  and
Franz Dickert
Peter A. Lieberzeit
Affiliation:
Peter.Lieberzeit@univie.ac.at, University of Vienna, Department of Analytical Chemistry and Food Chemistry, Waehringer Strasse 38, Vienna, 1090, Austria, +43/1/4277-52341, +43/1/4277-9523
Adeel Afzal
Affiliation:
adeelafzalqau@yahoo.com, University of Vienna, Department of Analytical Chemistry and Food Chemistry, Waehringer Strasse 38, Vienna, 1090, Austria
Adnan Mujahid
Affiliation:
Adnan.Mujahid@univie.ac.at, University of Vienna, Department of Analytical Chemistry and Food Chemistry, Waehringer Strasse 38, Vienna, 1090, Austria
Franz Dickert
Affiliation:
Franz.Dickert@univie.ac.at, University of Vienna, Department of Analytical Chemistry and Food Chemistry, Waehringer Strasse 38, Vienna, 1090, Austria
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Abstract

Sol-gel thin films and nanoparticles can be functionalized by imprinting strategies based on self-organization of the polymer precursors around a template compound. The resulting rugged layers are highly suitable for operating as sensor layers in harsh environments, such as engine oils. By adding e.g. dimethyl formamide or polyethylene glycol to titanate sols, the resulting layers show substantially increased sensitivity due to higher porosity and accessibility of the recognition sites. The same is true for nanoparticles, where the sensor effects are directly correlated to particle dimensions. Furthermore, also imprinted ZrO2 nanoparticles show very appreciable selectivity.

Keywords

sol-gelsensorbiomimetic (assembly)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1094: Symposium DD – From Biological Materials to Biomimetic Material Synthesis , 2008 , 1094-DD05-08
Copyright
Copyright © Materials Research Society 2008

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