| EPSRC Reference: |
GR/L69077/01 |
| Title: |
SILAFLUORENE CONTAINING POLYMERS FOR LED APPLICATIONS |
| Principal Investigator: |
Billingham, Professor NC |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Chemistry |
| Organisation: |
University of Sussex |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 1997 |
Ends: |
28 February 1999 |
Value (£): |
47,232
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| EPSRC Research Topic Classifications: |
| Materials Synthesis & Growth |
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Summary on Grant Application Form |
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This project involves the synthesis of the -2,7-diboronic acid and -2,7-divinyl derivatives of 9, 9-dialkyl-9H, 9-silafluorenes and their carbon-based analogues, 9, 9-diakylfluorenes. Characterisation will include UV/Vis spectroscopy, photoluminescence and UV stability. Using these monomers a wide range of fully conjugated polymers will be prepared via Susuki coupling of the dibromides with the diboronic acids and metathesis polymerisation of the divinyl monomers. This will provide a range of silafluorene- and fluorene-containing conjugated polymers. The high electron accepting ability of the silole ring will lower the band gap position of the poly (silafluorene)s and poly (silafluenevinylene)s relative to the poly(fluorene)s and poly(fluorenevinylene)s, respectively making charge injection is easier. Aside from conventional polymer characterisation techniques to determine molecular weights (gel permeation chromatography) and thermal stabilities (DSC and TGA), the polymers will be assessed as candidates for the emissive layer or emissive/electron transport layer in LED devices. The solution state properties and stability will be investigated by UV/Vis and photoluminescence spectroscopies. Solid state (bulk and thin film) properties will be assessed by photoluminescence and electroluminescence as well as cyclic voltammetry. LED devices will be constructed from the most promising samples and their efficiencies and stabilities determined.
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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.sussex.ac.uk |