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Rational Design of an Electron‐Reservoir Pt II Complex for Efficient Photocatalytic Hydrogen Production from Water
Author(s) -
Whang Dong Ryeol,
Park Soo Young
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201500787
Subject(s) - catalysis , photocatalysis , electrochemistry , ligand (biochemistry) , chemistry , photosensitizer , hydrogen production , electron acceptor , photochemistry , electron donor , electron , hydrogen , electron transfer , water splitting , organic chemistry , physics , electrode , biochemistry , receptor , quantum mechanics
Herein we report a Pt II complex containing a 4,4′‐bis[4‐(triphenylsilyl)phenyl]‐2,2′‐bipyridine ligand as a molecular catalyst for water splitting. Systematic studies of the electrochemical and electronic properties of this catalyst, in comparison with two control complexes, reveal electron‐reservoir characteristics upon two‐electron reduction. A turnover number of 510 000 was recorded by employing this complex as a water reduction catalyst in combination with a state‐of‐the‐art photosensitizer and N , N ‐dimethylaniline as a sacrificial electron donor, which represents a large improvement over the control complexes that do not contain the tetraphenylsilyl ligand substitution.