Temperature effect on the surface phase transitions of monolayer films of C12E1 at air/water interface

Surinder K. Mehta, Yosuke Imai, Hiroki Takumi, Kinue Shibata, Hiroyasu Sakamoto, Takanori Takiue, Hiroki Matsubara, Makoto Aratono

研究成果: Contribution to journalArticle査読

抄録

The temperature-dependent conformational states of a monolayer film of ethylene glycol monododecyl ether (C12E1) at the air/water interface have been investigated using ellipsometry, surface tension, external reflection-absorption FTIR spectroscopy and two-dimensional infrared (2DIR) correlation analysis. The ellipticity coefficients and the entropy associated with C12E1 adsorption changed almost discontinuously at certain temperatures, which manifested the interfacial phase transitions. The phase transition and coexistence of two phases were further clarified using 2DIR correlation analysis with temperature perturbation. The asynchronous correlation maps revealed that both bands of asymmetric and symmetric C-H stretching vibration in one-dimensional IR were split into two components, which confirmed the coexistence of two phases at the interface.

本文言語英語
ページ(範囲)2647-2652
ページ数6
ジャーナルColloid and Polymer Science
291
11
DOI
出版ステータス出版済み - 11 1 2013

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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