Dense Deposition of Gold Nanoclusters Utilizing a Porphyrin/Inorganic Layered Material Complex as the Template.
We examined the deposition of gold clusters through the reduction of a gold precursor sensitized by nonaggregated, assembled porphyrin molecules on an inorganic layered material surface in order to develop a novel strategy for constructing assemblies of gold clusters. Visible light irradiation on nonaggregated, assembled porphyrin on the inorganic surface in the presence of the gold precursor and an electron donor induced the deposition of gold NPs on the surface of the inorganic layered material. Uniform gold clusters, with an average diameter of 1.5 nm, were deposited on the surface without aggregation. The average interparticle distance between adjacent gold clusters (center to center) was 2.3 nm, which agrees well with the average intermolecular distance of the nonaggregated, assembled porphyrin molecules on the inorganic surface. Thus, the generated gold clusters appear to reflect the nonaggregated, assembled structure of the porphyrin molecules on the inorganic surface. This method, termed the photosensitized template reduction (PTR) method, is a useful and novel technique for the deposition of metal nanoparticles on the surfaces of supporting materials.
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan.|Japan Society for the Promotion of Science (DC1), Ichibancho, Chiyoda-ku, Tokyo 102-8471, Japan.|Department of Physics and Materials Science, Interdisciplinary Graduate School of Science and Engineering, Shimane University , 1060 Nishi-kawatsu-cho, Matsue, Shimane 690-8504, Japan.
Takuya
T
Fujimura
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan.
Yuma
Y
Yoshida
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan.|Center for Artificial Photosynthesis, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan.
Haruo
H
Inoue
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan.|Center for Artificial Photosynthesis, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan.
Tetsuya
T
Shimada
Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan.|Center for Artificial Photosynthesis, Tokyo Metropolitan University , 1-1 Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan.
Shinsuke
S
Takagi