Smart structures for sensing environmental pollution

WILKOP, T., YATES, R., RAY, A., HASSAN, A. K. and ALEKSEY, N. (1999). Smart structures for sensing environmental pollution. In: VARADAN, V. K., (ed.) Smart Structures and Materials 1999: Smart Electronics and Mems. Proceedings of the Society of Photo-Optical Instrumentation Engineers (Spie), 3673 . SPIE, 327-334.

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We present a novel composite sensing agent consisting of calix[4]resorcinarene (C[4]RA) and the conducting polyorthomethoxyaniline (POMA) and propose different sensing mechanisms that can take advantage of its nanoporosity and unique complexation reactions. The two main purposes of combining the materials are, to improve the deposition of the materials as Langmuir-Blodgett (LB) films and to create a nanoporous material that improves on the absorbtion / desorbtion behaviour of the films giving higher gas diffusion coefficients. LB films offer the highest control of film properties in comparison to alternative deposition methods and the inclusion of flexible calixarene in the polymer structure offers enhanced response and recovery times in comparison to straight chain molecules than steric acid. Further effects such as conductivity increases of the material of up to two orders of magnitude upon exposure to saturated vapours are also described. The results of the present studies are encouraging and promise potential for extended studies with alternative composites utilising different electroactive conjugated polymers and varying crown size calixarenes, but using the same deposition method.

Item Type: Book Section
Additional Information: Smart Structures and Materials 1999 Conference MAR 01-04, 1999 NEWPORT BEACH, CA
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
Page Range: 327-334
Depositing User: Helen Garner
Date Deposited: 21 May 2010 10:33
Last Modified: 18 Mar 2021 21:15

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