| EPSRC Reference: |
GR/M56913/01 |
| Title: |
MODELS FOR POLYARYLAMINE MOLECULAR MAGNETS |
| Principal Investigator: |
Bushby, Professor RJ |
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| Project Partners: |
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| Department: |
Sch of Chemistry |
| Organisation: |
University of Leeds |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1999 |
Ends: |
30 September 2002 |
Value (£): |
52,629
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| EPSRC Research Topic Classifications: |
| Chemical Synthetic Methodology |
Materials Processing |
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| EPSRC Industrial Sector Classifications: |
| Chemicals |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Ph3C. radical and Ph3N + radical cation both tend to dimerise in solution but substitution of the benzene ring or extension of the conjugation yields triarylamminium (Ar3N.+) salts which are stable at room temperature. We have used these stable radical cations as S=1/2 spin-bearing building blocks in our high-spin polymers. In these the total moment is ca 7-% of the theoretical maximum. This is probably because the exchange coupling, is weakened by the highly extended nature of the conjugated systemand by twisting between the aromatic rings. One of the main aims of this project is to design in changes which increase the planarity of these systems and increase the strength of the exchange interactions and to check the success of these design changes by synthesising the characterising model monomers. The other main aim is to exploit the fruitful route to molecular magnets in which ferrimagnetic chains are created which contain alternating organic (polydentate) radical ligands and transition metal centres using ligands modelled on these stable (Ar3N.+) salts as the organic component.
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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.leeds.ac.uk |