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Molecular Catalysts Confined on and Within Molecular Layers Formed on a Si(111) Surface with Direct Si–C Bonds
Author(s) -
Masuda Takuya,
Fukumitsu Hitoshi,
Takakusagi Satoru,
Chun WangJae,
Kondo Toshihiro,
Asakura Kiyotaka,
Uosaki Kohei
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201102491
Subject(s) - materials science , catalysis , surface (topology) , nanotechnology , chemical engineering , silicon , crystallography , optoelectronics , organic chemistry , chemistry , geometry , mathematics , engineering
Two examples of confined molecular catalysts are presented . PtCl 4 2− complexes are attached to a thiol‐terminated monolayer by ligand exchange of Cl − with a thiolate group and incorporated in a multilayer of viologen moieties by ion exchange. All Cl − ligands are replaced by OH − or H 2 O before HER takes place. Ex situ and in situ XAFS measurements confirm that the Pt complexes accelerate HER without being converted into Pt particles.