Extremely high stability of glutathionate-protected Au25 clusters against core etching

Yukatsu Shichibu, Yuichi Negishi, Hironori Tsunoyama, Masayuki Kanehara, Toshiharu Teranishi, Tatsuya Tsukuda

研究成果: Article

290 引用 (Scopus)

抄録

The etching reactivity of glutathionate (SG) protected Au n(SG)m clusters, where (n,m)=(10,10), (15,13), (18, 14), (22,16), (25,18), (29,20), (33, 22), and (39, 24) by free glutathione (GSH) under aerobic condition, was analyzed. It was observed that the colors of the solution of smaller Aun(SG)m cluster (core size n<25) faded after the addition of free GSH and became cloudy after three hours, while those for larger clusters (n≥25) did not exhibited appreciable color changes. The Au25(SG)18 and Au39(SG)25 showed the highest stability during storage in water for two weeks at ambient temperature. The high stability of Au25(SG)18 against core etching was contributed by chemical inertness arising from full protection by the SG ligands.

元の言語English
ページ(範囲)835-839
ページ数5
ジャーナルSmall
3
発行部数5
DOI
出版物ステータスPublished - 2007 5
外部発表Yes

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Etching
Color
Glutathione
Ligands
Temperature
Water

ASJC Scopus subject areas

  • Biomaterials
  • Engineering (miscellaneous)
  • Biotechnology
  • Medicine(all)

これを引用

Shichibu, Y., Negishi, Y., Tsunoyama, H., Kanehara, M., Teranishi, T., & Tsukuda, T. (2007). Extremely high stability of glutathionate-protected Au25 clusters against core etching. Small, 3(5), 835-839. https://doi.org/10.1002/smll.200600611

Extremely high stability of glutathionate-protected Au25 clusters against core etching. / Shichibu, Yukatsu; Negishi, Yuichi; Tsunoyama, Hironori; Kanehara, Masayuki; Teranishi, Toshiharu; Tsukuda, Tatsuya.

:: Small, 巻 3, 番号 5, 05.2007, p. 835-839.

研究成果: Article

Shichibu, Y, Negishi, Y, Tsunoyama, H, Kanehara, M, Teranishi, T & Tsukuda, T 2007, 'Extremely high stability of glutathionate-protected Au25 clusters against core etching', Small, 巻. 3, 番号 5, pp. 835-839. https://doi.org/10.1002/smll.200600611
Shichibu, Yukatsu ; Negishi, Yuichi ; Tsunoyama, Hironori ; Kanehara, Masayuki ; Teranishi, Toshiharu ; Tsukuda, Tatsuya. / Extremely high stability of glutathionate-protected Au25 clusters against core etching. :: Small. 2007 ; 巻 3, 番号 5. pp. 835-839.
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abstract = "The etching reactivity of glutathionate (SG) protected Au n(SG)m clusters, where (n,m)=(10,10), (15,13), (18, 14), (22,16), (25,18), (29,20), (33, 22), and (39, 24) by free glutathione (GSH) under aerobic condition, was analyzed. It was observed that the colors of the solution of smaller Aun(SG)m cluster (core size n<25) faded after the addition of free GSH and became cloudy after three hours, while those for larger clusters (n≥25) did not exhibited appreciable color changes. The Au25(SG)18 and Au39(SG)25 showed the highest stability during storage in water for two weeks at ambient temperature. The high stability of Au25(SG)18 against core etching was contributed by chemical inertness arising from full protection by the SG ligands.",
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