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Structure‐Activated Copper Photosensitisers for Photocatalytic Water Reduction
Author(s) -
Chen NanYu,
Xia LiangMin,
Lennox Alastair J. J.,
Sun YuanYuan,
Chen Hao,
Jin HaiMing,
Junge Henrik,
Wu QinAn,
Jia JianHong,
Beller Matthias,
Luo ShuPing
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602598
Subject(s) - photocatalysis , steric effects , copper , chemistry , phenanthroline , denticity , turnover number , inorganic chemistry , nitrogen , photochemistry , noble metal , hydrogen production , catalysis , hydrogen , ligand (biochemistry) , metal , polymer chemistry , organic chemistry , biochemistry , receptor
Abstract A series of phenanthroline‐based ligands have been synthesised and their influence as bidentate nitrogen ligands in heteroleptic [Cu(P^P)(N^N)] + photosensitisers in light‐driven water reduction has been studied. In this noble‐metal‐free Cu–Fe‐based photocatalytic water reduction system, the structural effects of the nitrogen ligands have been explored, including the steric and electronic effects of substituents at the 2,9‐ and 4,7‐positions of phenanthroline. Ligands were prepared that led to increased hydrogen generation, with turnover numbers (TON Cu ) of up to 1388 being observed. All the new complexes were electrochemically and photophysically characterised. We demonstrate for the first time that the presence of fluorine in nitrogen ligands increases the efficacy of copper complexes in photocatalytic hydrogen production.