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    Fluorine containing poly(amide-imide)s: synthesis and formation of Langmuir-Blodgett monolayers

    Year: 2003

    Journal: European Polymer Journal 39 (2003) 127-134, 20111221

    Authors: E.J. Onah, U. Oertel, L. Häuler, D. Voigt, C. Froeck, H. Komber, nE.J. Onah, U. Oertel, L. Häuler, D. Voigt, C. Froeck, H. Komber, B.I. Voit, K. Lunkwitz

    Organizations: Institute of Polymer Research, Dresden, Hohe Strasse 6, 01069 Dresden, Germany

    Soluble fluorine containing poly(amide-imide)s, PAI(1-4), were synthesized from diimide-dicarboxylic acid, 2,2-bis[N-(4-carboxyphenyl)-phthalimide-1,4-yl]hexa.uoropropane with various diamines by direct polycondensation in N-methyl-2-pyrrolidone (NMP) containing CaCl2 and using triphenyl phosphite and pyridine as condensing agents. The polymers were readily soluble in aprotic polar solvents such as NMP, N,N-dimethylacetamide, dimethyl sulfoxide and tetrahydrofuran. Their Langmuir monolayers were studied at the air/water interface. The monolayers were generally stable at the water surface and could be reproducibly transferred onto solid substrates to build up Langmuir-Blodgett (LB) multilayers. The LB mono- and multilayers were characterized by ultra-violet/visible spectroscopy (UV-Vis), surface plasmon resonance, atomic force microscopy.