Protecting structure analyses of organic molecule-protected nanoscopic noble metal clusters

✍ Scribed by Tetsu Yonezawa; Toshihiro Tominaga; Naoki Toshima

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 747 KB
• Volume: 7
• Category: Article
• ISSN: 1042-7147
• DOI: 10.1002/(sici)1099-1581(199608)7:8<645::aid-pat578>3.0.co;2-w

✦ Synopsis

The stabilizing structure of cationic surfactant-protected platinum clusters in water and tertia y amine-protected rhodium clusters in chloroform, prepared by photoand 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.