Polyphiphilic Fluorocarbon Self-Assembly as an Asymmetric Field

除了疏水性外，长全氟烷烃通常具有足够的疏水性，可以从烃类有机介质中分离出来。本研究的目的是利用疏水性和疏油性制备一种新的不对称亲多自组装体。合成了以下两种氟碳衍生物，并对其聚集性能进行了表征。并对其在光学上的应用，如不对称引起的光折变效应进行了分析。我们首次以液晶为取向介质观察到光折变现象。（氟碳1）-不对称氟碳亲多剂-我们设计了一种双荷电的半氟碳烷基，具有一个苯基与手性氨基残基连接。这种分子的目标是一个矢量囊泡单层膜。其铸膜的水分散体发射光谱、圆二色光谱和XRD分析表明，氟烷基、苯基和氨基酸残基取向一致。（氟碳2）-具有平行方向Diplos矩的脂质-我们找到了一种方法，分别在偶氮苯的4-和4'-正极中引入一个全氟烷基和一个烃烷氧基。这种电子推拉的情况产生一个很大的偶极矩。与这些偶极矩看似稳定的反平行方向相反，氟碳部分的疏油性迫使偶极矩为平行方向。

In addition to the hydrophobicity, long perfluoroalkanes generally become o1eophobic enough to be segregated from hydrocarbon organic media. The aim of this study is to utilize both the hydrophobicity and the oleophobicity for making a new asymmetric polyphiphilic self-assembly. The following two fluorocarbon derivatives were synthesized and characterized their aggregation properties. The importance was also plated on the optical application such as photorefractive effect arising form their asymmetry. We observed firstly photorefractive phenomena using liquid-crystal as an oriented medium.(Fluorocarbon 1) - Asymmetric Fluorocarbon Polyphiphile - We devised a double charged semifluorocarbon alkyl to possess a phenyl group attaching with a chiral amino residue. This molecule is aimed for a vectorial vesicular monolayer membrane. Emission and circular dichromic spectra of aqueous dispersion and XRD for its cast film indicated that the fluoroalkyl, phenyl and amino acid residue oriented heading for one direction.(Fluorocarbon 2) - Lipid with Parallel Orientation of Diplos Moments - We found out a method to introduce a single perfluoroalkyl and a hydrocarbon alkoxy into 4- and 4'- poaitibn of azobenzene, respectively. This electronic push-pull situation produce a large dipole moment. As opposed to the seemingly stable anti-parallel orientation of these dipole moments, the oleophobicity of the fluorocarbon moiety force the dipole moments to be parallel orientation.