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A Silicon‐Heteroaromatic System as Photosensitizer for Light‐Driven Hydrogen Production by Hydrogenase Mimics
Author(s) -
Goy Roman,
Apfel UlfPeter,
Elleouet Catherine,
Escudero Daniel,
Elstner Martin,
Görls Helmar,
Talarmin Jean,
Schollhammer Philippe,
González Leticia,
Weigand Wolfgang
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201300537
Subject(s) - photosensitizer , hydrogenase , photochemistry , photocatalysis , catalysis , chemistry , hydrogen production , covalent bond , hydrogen , combinatorial chemistry , organic chemistry
Abstract The utilization of light and inexpensive catalysts to afford hydrogen represents a huge challenge. Following our interest in silicon‐containing [FeFe]‐hydrogenase ([FeFe]‐H 2 ase) mimics, we report a new model approach for a photocatalytic [FeFe]‐H 2 ase mimic 1 , which contains a 1‐silafluorene unit as a photosensitizer. Thereby, the photoactive ligand is linked to the [2Fe2S] cluster through S–CH 2 –Si bridges. Photochemical H 2 evolution experiments were performed and revealed a turnover number (TON) of 29. This is the highest reported photocatalytic efficiency for an [FeFe]‐H 2 ase model complex in which the photosensitizer is covalently linked to the catalytic center.