2009 Fiscal Year Final Research Report
Exploring Novel Functions of Ligand-Protected Metal Clusters with Well-Defined Compositions
| Project/Area Number |
18064017
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Hokkaido University (2007-2009)
Institute for Molecular Science (2006) |
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Principal Investigator |
TSUKUDA Tatsuya Hokkaido University, 触媒化学研究センター, 教授 (90262104)
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| Co-Investigator(Renkei-kenkyūsha) |
NEGISHI Yuichi 東京理科大学, 理学部, 講師 (20332182)
TSUNOYAMA Hironori 北海道大学, 触媒化学研究センター, 助教 (40390661)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 有機保護金属クラスター / 化学組成 / 質量分析 / 触媒作用 |
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| Research Abstract |
Metal clusters composed of less than hundred atoms exhibit novel properties due to quantum size effect and large surface-to-volume ratio. Passivation of the metal cluster surfaces by organic molecules not only stabilize them from aggregation but also append new optical, magnetic, and catalytic properties due to electron transfer at the interface and distortion of cluster structures. This study aims to reveal the correlation between the structures and functions of the metal clusters protected by organic molecules and provide a guiding principle for fabrication of this class of nano-scale materials. To this end, we first synthesized the metal clusters protected by monolayers of organic ligands (thiols and phosphines) and polymers while controlling the chemical compositions precisely and systematically. Then, their optical and chemical properties were studied and discussed in correlation with the electronic and geometric structures.
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[Journal Article] Electronic Structure of Dendrimer-Au Hybrid Nanoparticle: Hard X-ray Photoemission Study2008
Author(s)
Murase, Y.; Kitagawa, T.; Imamura, M.; Tanaka, A.; Yasuda, H.; Negishi, Y.; Tsukuda, T.; Ueda, S.; Yamashita, Y.; Yoshikawa, H.; Kobayashi, K.
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Journal Title
Trans. Mater. Res. Soc. Jpn. 33
Pages: 169-172
Peer Reviewed
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