| EPSRC Reference: |
GR/L77027/01 |
| Title: |
SELECTIVE, REVERSIBLE CHLORINE GAS SENSORS USING NOVEL PHTHALOCYANINES AND PORPHYRINS |
| Principal Investigator: |
Richardson, Dr TH |
| Other Investigators: |
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| Department: |
Physics and Astronomy |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
17 November 1997 |
Ends: |
16 November 1999 |
Value (£): |
110,733
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We have identified a series of phtalocynanine complexes and a series of porphyrins which show a fast response * gas-sensitive (chlorine) optical absorption at a low concentration (<10ppm) in thin film form. These films show a greater than ten-fold selectivity to chlorine in reaction to HCl and NO2 and in most cases recover fully to their original optical state, so fulfilling the main requirements of a re-useable gas sensor. This programme will concentrate on the maximisation of the chlorine gas sensitivity of the optical properties of self-assembled, LB, evaporated and spin-coated films of these materials using in-situ UV-visible spectroscopy, surface plasmon resonance and fibre optic overlay sensing. The recovery of the initial optical signal after exposure to the test gas will be studied in detail during multiple exposures to chlorine gas in the range 0-10ppm. Furthermore, the specific chlorine gas sensing capability of our materials will be optimised in relation to other gases such as NO2, SO2 and HCl.* Often <30s for saturation.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.shef.ac.uk |