A conformational phase transition in a Langmuir film of an amphiphilic azacrown

被引：20

作者：

Gidalevitz, D

Mindyuk, OY

Stetzer, MR

Heiney, PA ^{[1
]}

Kurnaz, ML

Schwartz, DK

Ocko, BM

McCauley, JP

Smith, AB

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[2] Univ Penn, Res Struct Matter Lab, Philadelphia, PA 19104 USA

[3] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA

[4] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 35期

关键词：

D O I：

10.1021/jp982412o

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have used grazing-incidence X-ray diffraction, X-ray reflectivity, and Brewster-angle microscopy to study an amphiphilic azacrown derivative at the air-water interface. The compound studied has a ring-shaped, flexible core with six alkyl chains attached. As the density is increased, the molecules undergo a phase transition from a face-on structure, with the alkyl tails extending away from the interface, to a thicker edge-on structure, with the tails extending radially away from the core. Concomitant with this rearrangement, the film develops long-range in-plane structural order.

引用

页码：6688 / 6691

页数：4

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