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Protecting structure analyses of organic molecule‐protected nanoscopic noble metal clusters
Author(s) -
Yonezawa Tetsu,
Tominaga Toshihiro,
Toshima Naoki
Publication year - 1996
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199608)7:8<645::aid-pat578>3.0.co;2-w
Subject(s) - materials science , noble metal , nanoscopic scale , dispersion (optics) , chemical physics , metal , transmission electron microscopy , cluster (spacecraft) , molecule , particle size , platinum , adsorption , radius , particle (ecology) , nanotechnology , chemistry , optics , organic chemistry , physics , computer science , metallurgy , programming language , catalysis , computer security , oceanography , geology
The stabilizing structure of cationic surfactant‐protected platinum clusters in water and tertiary amine‐protected rhodium clusters in chloroform, prepared by photo‐ and hydrogen‐reduction, respectively, was investigated. These nanoscopic noble metal clusters present a narrow size distribution and are stable. The structural information of protective organic molecules on the surface of metal clusters was studied by transmission electron microscopy and hydrodynamic radius measurements according to the Taylor dispersion method. The size of the entire cluster with the protective layer surrounding the metal surface, obtained as Stokes' radii by the Taylor dispersion method, is considered to be fairly consistent with the sum of the naked particle size, obtained by transmission electron micrographs, and the size of the adsorbed protective layer, supporting the conformational information.