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New Photosensitizers Based on Heteroleptic Cu$^{I}$ Complexes and CO$_{2}$ Photocatalytic Reduction with [Ni$^{II}$(cyclam)]Cl$_{2}$

Gracia, Lisa-Lou 1; Luci, Luisa 1; Bruschi, Cecilia 1; Sambri, Letizia; Weis, Patrick 2; Fuhr, Olaf 3; Bizzarri, Claudia 1
1 Institut für Organische Chemie (IOC), Karlsruher Institut für Technologie (KIT)
2 Institut für Physikalische Chemie (IPC), Karlsruher Institut für Technologie (KIT)
3 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)


Earth‐abundant metal complexes have been attracting increasing attention in the field of photo(redox)catalysis. In this work, the synthesis and full characterisation of four new heteroleptic Cu$^{I}$ complexes are reported, which can work as photosensitizers. The complexes bear a bulky diphosphine (DPEPhos=bis[(2‐diphenylphosphino)phenyl] ether) and a diimine chelating ligand based on 1‐benzyl‐4‐(quinol‐2′yl)‐1,2,3‐triazole. Their absorption has a relative maximum in the visible‐light region, up to 450 nm. Thus, their use in photocatalytic systems for the reduction of CO$_{2}$ with blue light in combination with the known catalyst [Ni$^{II}$(cyclam)]Cl$_{2}$ was tested. This system produced CO as the main product through visible light (λ =420 nm) with a TON up to 8 after 4 hours. This value is in line with other photocatalytic systems using the same catalyst. Nevertheless, this system is entirely noble‐metal free.

Verlagsausgabe §
DOI: 10.5445/IR/1000122373
Veröffentlicht am 05.08.2020
DOI: 10.1002/chem.202001279
Zitationen: 16
Web of Science
Zitationen: 14
Zitationen: 16
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Organische Chemie (IOC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000122373
HGF-Programm 43.21.04 (POF III, LK 01) Molecular Engineering
Erschienen in Chemistry - a European journal
Verlag John Wiley and Sons
Band 26
Heft 44
Seiten 9929-9937
Vorab online veröffentlicht am 16.07.2020
Schlagwörter 2018-020-022509
Nachgewiesen in Dimensions
Web of Science
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