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A bistable electroc...
A bistable electrochromic material based on a hysteretic molecular switch immobilised on nanoparticulate metal oxide
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- Tsekouras, George (author)
- Uppsala universitet,Institutionen för fotokemi och molekylärvetenskap
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Minder, Nikolas (author)
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Figgemeier, Egbert (author)
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- Johansson, Olof (author)
- Uppsala universitet,Institutionen för fotokemi och molekylärvetenskap
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- Lomoth, Reiner (author)
- Uppsala universitet,Institutionen för fotokemi och molekylärvetenskap
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(creator_code:org_t)
- Royal Society of Chemistry (RSC), 2008
- 2008
- English.
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In: Journal of Materials Chemistry. - : Royal Society of Chemistry (RSC). - 0959-9428 .- 1364-5501. ; 18:47, s. 5824-5829
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Combination of an electrochemically bistable Ru polypyridyl complex (2) with the metal oxide semiconductor Sb:SnO2 formed the basis of an electrochromic hybrid material characterised by a hysteretic response to applied potential. The electrochemical bistability of the molecular component arises from redox-triggered linkage isomerisation where an ambidentate ligand changes reversibly between N- and O-coordination in the Ru(II) and Ru(III) states, respectively. Reversible oxidation and reduction result in a pronounced electrochromic effect (change in UV-Vis absorption at the metal-to-ligand-charge- transfer (MLCT) band) and the potentials for interconversion between the states are separated by similar to 0.5 V due to the linkage isomerisation reactions. With a carboxylate anchoring group on the auxiliary ligand, the bistable molecular switch was immobilised on the surface of nanoparticulate Sb:SnO2 films. This resulted in an electrode material featuring a hysteretic electrochemical response where oxidation state and colour of the electrode depended on the electrochemical history of the system.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- Chemistry
- Kemi
Publication and Content Type
- ref (subject category)
- art (subject category)
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