Conformational study of citrates adsorbed on gold nanoparticles using fourier transform infrared spectroscopy

Priastuti Wulandari, Xinheng Li, Kaoru Tamada, Masahiko Hara

研究成果: ジャーナルへの寄稿学術誌査読

27 被引用数 (Scopus)

抄録

We investigated the structure of citrates adsorbed on Au nanoparticles (AuNPs) synthesized by the Frens method by Fourier transformed infrared spectroscopy (FTIR). We found that physisorbed citrates are stable enough to stay on the surface of AuNPs during purification. The FT-IR spectra of citrates on AuNPs are quite uniquely different from bulk citrates, suggesting the formation of coordination bond between carboxylate group and gold. The shifts of carboxylate vibration modes on AuNPs are larger than that on flat Au substrates, as expected from the stronger dipole field on AuNPs compared with that on flat substrates.

本文言語英語
ページ(範囲)185-192
ページ数8
ジャーナルJournal of Nonlinear Optical Physics and Materials
17
2
DOI
出版ステータス出版済み - 6月 2008
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 物理学および天文学(その他)

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