X-ray magnetic circular dichroism of size-selected, thiolated gold clusters

Yuichi Negishi, Hironori Tsunoyama, Motohiro Suzuki, Naomi Kawamura, Michio M. Matsushita, Koichi Maruyama, Tadashi Sugawara, Toshihiko Yokoyama, Tatsuya Tsukuda

研究成果: Article査読

112 被引用数 (Scopus)

抄録

We report herein the X-ray magnetic circular dichroism (XMCD) at the Au L2,3 edges of a series of Au clusters protected by glutathione (GSH). The samples used here included AuN(SG)M with (N, M) = (10, 10), (15, 13), (18, 14), (22, 16), (25, 18), (29, 20), (39, 24) and a sodium gold(I) thiomalate (SGT) as a reference. Magnetic moments per cluster were found to be increased with size, whereas those per Au-S bond were nearly constant. This finding suggests that a localized hole created by Au-S bonding at the gold/glutathione interface, rather than the quantum size effect, is responsible for the spin polarization of gold clusters.

本文言語English
ページ(範囲)12034-12035
ページ数2
ジャーナルJournal of the American Chemical Society
128
37
DOI
出版ステータスPublished - 2006 9 20

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

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