| Title: |
Dual Role of a Novel Heteroleptic Cu(I) Complex in Visible‐Light‐Driven CO 2 Reduction |
| Authors: |
Bruschi, Cecilia; Gui, Xin; Rauthe, Pascal; Fuhr, Olaf; Unterreiner, Andreas‐Neil; Klopper, Wim; Bizzarri, Claudia |
| Contributors: |
Deutsche Forschungsgemeinschaft |
| Source: |
Chemistry – A European Journal ; volume 30, issue 44 ; ISSN 0947-6539 1521-3765 |
| Publisher Information: |
Wiley |
| Publication Year: |
2024 |
| Collection: |
Wiley Online Library (Open Access Articles via Crossref) |
| Description: |
A novel mononuclear Cu(I) complex was synthesized via coordination with a benzoquinoxalin‐2’‐one‐1,2,3‐triazole chelating diimine and the bis[(2‐diphenylphosphino)phenyl] ether (DPEPhos), to target a new and efficient photosensitizer for photocatalytic CO 2 reduction. The Cu(I) complex absorbs in the blue‐green region of the visible spectrum, with a broad band having a maximum at 475 nm (ϵ =4500 M −1 cm −1 ), which is assigned to the metal‐to‐ligand charge transfer (MLCT) transition from the Cu(I) to the benzoquinoxalin‐2’‐one moiety of the diimine. Surprisingly, photo‐driven experiments for the CO 2 reduction showed that this complex can undergo a photoinduced electron transfer with a sacrificial electron donor and accumulate electrons on the diimine backbone. Photo‐driven experiments in a CO 2 atmosphere revealed that this complex can not only act as a photosensitizer, when combined with an Fe(III)‐porphyrin, but can also selectively produce CO from CO 2 . Thus, owing to its charge‐accumulation properties, the non‐innocent benzoquinoxalin‐2‐one based ligand enabled the development of the first copper(I)‐based photocatalyst for CO 2 reduction. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1002/chem.202400765 |
| Availability: |
https://doi.org/10.1002/chem.202400765 |
| Rights: |
http://creativecommons.org/licenses/by-nc/4.0/ |
| Accession Number: |
edsbas.6FD5560E |
| Database: |
BASE |