| EPSRC Reference: |
GR/R33182/02 |
| Title: |
New hybrid phenanthroline/macroline ligands for supramolecular photochemistry |
| Principal Investigator: |
Ward, Professor MD |
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| Department: |
Chemistry |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 August 2003 |
Ends: |
30 September 2004 |
Value (£): |
29,161
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Summary on Grant Application Form |
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This project is to prepare an extensive new series of ligands in which the peripheral (OH)2 site of 5,6-dihydroxynaphthalene is converted to a crown-ether type macrocycle or a cryptand by reaction with ditosylates of the form Ts0(CHZCH2X)nCHZCH20Ts. By varying the number (n) and nature (X = 0, S, NH) of the donor sets an unprecedented variety of ligands can be prepared which contain a macrocyclic or cryptand site with up to three externally-directed phenanthroline units for attachment to luminophoric fragments such as {Ru(bipy)2)z+, (Re(CO)3CI) or {Ru(CN)4)2-. The effects of attaching secondary metal ions to the macrocycle on the luminescence and redox properties of the luminophore will be examined, as well as the possibility of inter-component photoinduced electron- and energy-transfer to transition-metal ions. Further conversion of the aza-crowns (X = NH) to polyaminocarboxylates will provide an effective binding site for luminescent lanthanide ions such as Tb, Nd and Y such that Ru/lanthanide energy-transfer can be evaluated. The possibility of attaching quencher groups to the luminophores via H-bonding to the pendant crown ether, which will allow photoinduced processes to occur between non-covalently assembled components, will also be 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.shef.ac.uk |