| EPSRC Reference: |
GR/L94772/01 |
| Title: |
SELECTIVE REVERSIBLE CHLORINE GAS SENSORS USING NOVEL PHTHALOCYANINES AND PORPHYRINS |
| Principal Investigator: |
Ashwell, Professor G |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Sch of Engineering |
| Organisation: |
Cranfield University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 1998 |
Ends: |
31 August 2001 |
Value (£): |
58,499
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
Materials Processing |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We have identified a series of phthalocyanine complexes and porphyrins which show a gas-sensitive (chlorine) optical absorption at low concentration (<10ppm) and a fast response (<20s for saturation) in thin film form. These films show a greater than tenfold selectivity to chlorine in relation to HC1 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 spun-coated films 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 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 HC1
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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 |
| Summary |
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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.cranfield.ac.uk |