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Abstract
A suprarnolecular complex [Ru(dcb)2(a-CD-5-bPY)]Cl2 (1-α-CD) (dcb=4,4'-dicarboxyl-2,2'-bipyfidine, α-CD-5-bpy= 6-mono[5-methyl(5'-methyl-2,2'-bipyridyl)]-permethylated α-CD) (CD: cyclodextrin) based on a ruthenium tris-bipyridyl core with an appended α-CD cavity is designed and synthesisled, in order to facilitate dye/redox couple interaction and dye regeneration in nanocrystalline TiO2 solar cells. The luminescent complex is fully characterized and anchored on mesoporous titania electrodes showing increased power-conversion efficiency in solid-state dye-sensitized solar cells using a composite polymer electrolyte. Direct comparison of the properties of the CD complex with an analogous ruthenium complex [Ru(dcb)2(5,5'-dmbpy)] Cl2 (2) (5,5'-dmbpy = 5,5'-dimethylbipyridin) without the CD cavity reveals that the photovoltaic performance of 1-α- CD is enhanced by about 40 % compared, to 2. Independent studies have shown complexation of the iodide redox couple to the CD in 1-α-CD. These results indicate that the CD moiety is able to act as a mediator and fine tune the photoelectrolyte interface.
Original language | English |
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Pages (from-to) | 54-58 |
Number of pages | 5 |
Journal | Advanced Functional Materials |
Volume | 17 |
Issue number | 1 |
Early online date | 15 Nov 2006 |
DOIs | |
Publication status | Published - 5 Jan 2007 |
Keywords
- Nanocrystalline materials
- Ruthenium complexes
- Solar cells, dye‐sensitized
- Titanium oxides
Fingerprint
Dive into the research topics of 'Functional supramolecular ruthenium cyclodextrin dyes for nanocrystalline solar cells'. Together they form a unique fingerprint.Projects
- 1 Finished
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Wires at the Nanoscale: Fabrication and Function (Linked with RRAH11013)
Engineering & Physical Science Research Council
1/05/05 → 31/10/07
Project: Research Councils