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Dynamic dimer coppe...
Dynamic dimer copper coordination redox shuttles
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Benesperi, Iacopo (författare)
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- Michaels, Hannes (författare)
- Uppsala universitet,Fysikalisk kemi
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- Edvinsson, Tomas, Professor, 1970- (författare)
- Uppsala universitet,Oorganisk kemi,Fasta tillståndets fysik
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Pavone, Michele (författare)
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Probert, Michael R. (författare)
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Waddell, Paul (författare)
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Muñoz-García, Ana Belén (författare)
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- Freitag, Marina (författare)
- Uppsala universitet,Fysikalisk kemi
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Chem. - : Elsevier. - 2451-9308 .- 2451-9294. ; 8:2, s. 439-449
- Relaterad länk:
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https://www.scienced...
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http://www.cell.com/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Summary Conventional redox mediators based on metal coordination complexes undergo electron transfer through the change in oxidation state of the metal center. However, electron transfer kinetics are offset toward preferred oxidation states when preorganized ligands constrain the reorganization of the coordination sphere. In contrast, we report here on dimeric copper(II/I) redox couples, wherein the extent of oxidation/reduction of two metal centers dictates the dynamic formation of dimer and monomer complexes: the dimeric (Cu(I))2 transitions to monomers of Cu(II). The bis(thiazole/pyrrole)-bipyridine tetradentate ligands stabilize both oxidation states of the unique redox systems. The dynamic dimer redox mediators offer a viable two-electron redox mechanism to develop efficient hybrid solar cells through inhibited recombination and rapid charge transport. Density functional theory calculations reveal inner reorganization energies for single-electron transfer as low as 0.27 eV, marking the dimeric complexes superior redox systems over single complexes as liquid and potentially solid-state electrolytes.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- coordination chemistry
- copper complex
- redox chemistry
- electrolyte
- dye-sensitized solar cell
- coordination complexes
- redox mediators
- solar cells
- charge transfer
- dye-sensitized solar cells
- copper complexes
- low recombination
- sustainable materials
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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