Polyphiphilic Fluorocarbon Self-Assembly as an Asymmetric Field

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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.