Orientational effect of surface-confined cyclodextrin on the inclusion of bisphenols

Hiroshi Endo, Tadashi Nakaji-Hirabayashi, Shinta Morokoshi, Makoto Gemmei-Ide, Hiromi Kitano*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

41 被引用数 (Scopus)

抄録

The molecular recognition of various kinds of bisphenols (BPs) and a bisphenol A - polymer conjugate (BPA - polymer) by a self-assembled monolayer (SAM) of thiolated β-cyclodextrin (CD) on a gold electrode was examined using cyclic voltammetry (CV). Based on the inhibitory effect of BPs on the inclusion of hydroquinone (HQ) as a probe by the surface-confined CD, the association constants (Kassoc) of BPs with the immobilized β-CD were estimated. The Kassoc values for BPs with the SAM of 3-dithiobis-(undecanoylamido)-3-deoxy-β-cyclodextrin (DTUA-β-CD) were smaller than those in the free β-CD system reported previously. A similar tendency was obtained when 6-(lipoylamido)-6-deoxy-β-cyclodextrin (LPβ-CD) was used in place of DTUA-β-CD. The Kassoc values for all the BPs except for bisphenol B with the SAM of LP-β-CD were always larger than those with the SAM of DTUA-β-CD, due to a difference in the orientation of the β-CD moiety in the SAMs. Furthermore, adsorption and desorption processes of the BPA-polymer from the surface-confined β-CD was followed using local surface plasmon resonance spectroscopy.

本文言語英語
ページ(範囲)1314-1321
ページ数8
ジャーナルLangmuir
21
4
DOI
出版ステータス出版済み - 2005/02/15

ASJC Scopus 主題領域

  • 材料科学一般
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

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