| EPSRC Reference: |
GR/H70416/01 |
| Title: |
SYNTHESIS AND CHARACTERISATION OF MAIN GROUP DMIT MOLECULAR MATERIALS |
| Principal Investigator: |
Tunstall, Dr D |
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| Department: |
Physics and Astronomy |
| Organisation: |
University of St Andrews |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 May 1993 |
Ends: |
30 April 1995 |
Value (£): |
6,681
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| EPSRC Research Topic Classifications: |
| Materials Synthesis & Growth |
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Summary on Grant Application Form |
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The aim of this application is to establish a programme of novel chemical synthesis of molecular materials, closely linked to a thorough programme of physical characterisation. ?The materials to be studied offer highly original structures with extensive p-delocalisation and have considerable potential as conducting solids or as nonlinear optical materials. Four complementary approaches will be adopted to synthesise main group dmit complexes with improved electronic properties. Firstly, p-block metals with variable oxidation states, eg Sb, Bi, Pb and Tc will be utilised in order to promote intra-complex charge transer and facilitate partial oxidation states. Secondly, Sc will be substituted for S to increase metal-chalcogenide bond distance and so improve the degree of planarity of the complex. Thirdly, electrochemical and chemical methods will be used to catenate the dmit complexes and so decrease the inter-complex stacking distance. Fourthly, dmit salts with p-delocalised counter-ions, eg BDET, will be investigated. Chemical characterisation by EPMA, spectroscopic techniques and chemical analysis will be followed by structural characterisation by x-ray crystallography and solid state NMR. Electrical and magnetic measurements will be routinely performed down to 4.2K. Samples indicating high conductivity will be further investigated at high pressures and appropriate midifications to the counter-ion investigated. Selected, well characterised samples, presenting particular structure types will be sent for nonlinear optical characterisation and, in addition, their chemical sensing capability investigated.
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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.st-and.ac.uk |