Structural investigation of Langmuir and Langmuir-Blodgett monolayers of semifluorinated alkanes.
Structural investigation of Langmuir and Langmuir-Blodgett monolayers of semifluorinated alkanes.
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半氟化烷烃的 Langmuir 和 Langmuir-Blodgett 单分子层的结构研究。
DOI：
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发表时间：
2006
影响因子：
3.3
通讯作者：
L. Camacho
中科院分区：
文献类型：
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作者：
Patrycja Dynarowicz Łatka;M. Pérez;E. Muñoz;M. Broniatowski;M. T. Martín;L. Camacho
用表面压强、表面电势-面积等温线和红外光谱研究了半氟烷烃(C(10)F(21)C(19)H(39))在空气-水界面的行为。此外，基于量子化学PM3半经验方法，研究了二聚体的结构，发现双螺旋构象是二聚体最稳定的构象。所得结果表明，在表面压力/面积等温线过程中观察到的相变是由双螺旋构型向垂直单螺旋构型转变的结果。
The behavior of a semi-fluorinated alkane (C(10)F(21)C(19)H(39)) has been studied at the air-water interface by using surface pressure and surface potential-area isotherms as well as infrared spectroscopy for the Langmuir-Blodgett films. In addition, based on the quantum chemical PM3 semiempirical approach, the dimer structure was investigated, and the double helix was found to be the most stable conformation of the dimer. The obtained results allow us to imply that the phase transition observed in the course of the surface pressure/area isotherm is due to a conformational change originating from the double helix to a vertical, single helix configuration.