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Synthesis and characterization of novel optically active poly(amide-imide)s

โœ Scribed by Mallakpour, Shadpour E; Hajipour, Abdol-Reza; Khoee, Sepideh

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
120 KB
Volume
48
Category
Article
ISSN
0959-8103

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โœฆ Synopsis

4,4'-(Hexaยฏuoroisopropylidene)-bis-(phthalic anhydride) (1) was reacted with L-leucine (2) in toluene solution at reยฏuxing temperature in the presence of triethylamine and the resulting imideacid (4) was obtained in quantitative yield. The compound (4) was converted to the diacid chloride (5) by reaction with thionyl chloride. The polymerization reaction of the imide-acid chloride ( ) with 1,6hexamethylenediamine (6a), benzidine (6b), 4,4'-diaminodiphenylmethane (6c), 1,5-diaminoanthraquinone (6d), 4,4'-sulfonyldianiline (6e), 3,3'-diaminobenzophenone (6f), p-phenylenediamine (6g) and 2,6-diaminopyridine (6h) was carried out in chloroform/DMAc solution. The resulting poly(amide-imide)s were obtained in high yield and are optically active and thermally stable. All of the above compounds were fully characterized by IR, elemental analyses and speciยฎc rotation. Some structural characterization and physical properties of those optically active poly(amide-imide)s are reported.

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