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Organopalladium catalyst on S-terminated GaAs(001)-(2×6) surface
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Konishi, Tomoya, Toujyou, Takashi, Ishikawa, Takuma, Bell, Gavin R. and Tsukamoto, Shiro (2009) Organopalladium catalyst on S-terminated GaAs(001)-(2×6) surface. Journal of Vacuum Science and Technology. Part B. Microelectronics and Nanometer Structures, Vol.27 (No.5). pp. 2206-2208. doi:10.1116/1.3193687 ISSN 1071-1023.
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Official URL: http://dx.doi.org/10.1116/1.3193687
Abstract
Organopalladium molecules, such as Pd(CH3COO)2 ({Pd}), immobilized on the S-terminated GaAs(001), termed GaAs–S–{Pd} have high catalytic activity and cycle durability in the Mizoroki–Heck reaction. It is thought that the presence of Ga–S bonds in the single atomic layer S-termination is essential for these catalytic properties despite the much higher thickness (~100 nm) of the {Pd} films. In this study, the authors demonstrate the retention of Ga–S bonds in ultrathin GaAs–S–{Pd} by using reflection high-energy electron diffraction and scanning tunneling microscopy (STM). The ultrathin GaAs–S–{Pd} was prepared by using a vapor-deposition technique. Deposited {Pd} was observed as ~1 nm dotlike structures with STM. The adsorption rate of {Pd} was also investigated.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Molecular beam epitaxy -- Research, Adsorption -- Research, Thin films -- Research, Surfaces (Physics), Surface chemistry | ||||
Journal or Publication Title: | Journal of Vacuum Science and Technology. Part B. Microelectronics and Nanometer Structures | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 1071-1023 | ||||
Official Date: | September 2009 | ||||
Dates: |
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Volume: | Vol.27 | ||||
Number: | No.5 | ||||
Number of Pages: | 3 | ||||
Page Range: | pp. 2206-2208 | ||||
DOI: | 10.1116/1.3193687 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) |
Data sourced from Thomson Reuters' Web of Knowledge
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