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 |
巻 | 21 |
号 | 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