Adsorption behavior of lauric acid at heptane/water interface as studied by second harmonic generation spectroscopy and interfacial tensiometry

Akira Yamaguchi, Tatsuya Uchida, Kimihisa Nochi, Tomohisa Yamashita, Norio Teramae

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Interfacial tensiometry and second harmonic generation (SHG) spectroscopy were applied to examine the adsorption behavior of lauric acid (LA) at a heptane/water interface. From interfacial tensiometry measurements, the adsorption kinetics of LA was revealed to be diffusion-controlled, and the adsorption constant of LA was estimated to be 9.6 × 104 M -1. The adsorption isotherms obtained by SHG measurements were analyzed by taking account of both the molecular orientation of LA at the interface and a surface electric field generated by the adsorbed LA layer. It was confirmed that the carboxylic groups of adsorbed LA molecules were well ordered at the heptane/water interface and the orientation of the carboxylate group was invariant during the adsorption process.

本文言語English
ページ(範囲)1523-1527
ページ数5
ジャーナルAnalytical Sciences
20
11
DOI
出版ステータスPublished - 2004 11月

ASJC Scopus subject areas

  • 分析化学

フィンガープリント

「Adsorption behavior of lauric acid at heptane/water interface as studied by second harmonic generation spectroscopy and interfacial tensiometry」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル