File(s) under permanent embargo
Synthesis, polymerization and wool coating studies of 3-iso-butylpyrrole and 3-iso-pentylpyrrole
journal contributionposted on 2006-12-01, 00:00 authored by R Foitzik, Akif KaynakAkif Kaynak, Fred PfefferFred Pfeffer, J Beckmann
In a four-step method starting from pyrrole, the synthesis of 3-iso-butylpyrrole and 3-iso-pentylpyrrole, was achieved in 45 and 44% yields, respectively. Polymerization studies of these branched alkyl pyrroles are described and the results compared with those obtained for the unbranched structural isomers n-butyl and n-pentylpyrrole. A series of conductive textiles were produced by the chemical polymerization of the iso-alkylpyrroles using both solution and vapour polymerization techniques. Fabrics coated with poly-iso-alkylpyrrole formed using the solution polymerization method had a lower surface resistance than those formed using the vapour polymerization method. These conductivity results were in direct contrast to those previously obtained for 3-n-alkylpyrroles on fabrics. A remarkable crystal-like growth on the surface of the textile fabric was observed when solution polymerization of 3-iso-pentylpyrrole was employed—reinforcing the notion that subtle changes in monomer structure can drastically affect bulk polymer properties.
Pagination1333 - 1340
NotesAvailable online 28 November 2006.
Publication classificationC1 Refereed article in a scholarly journal
Copyright notice2006 Elsevier B.V.
polymersacylationsubstituent effectsprotecting groupsreductionstextilecoatingconducting polymerswoolScience & TechnologyTechnologyPhysical SciencesMaterials Science, MultidisciplinaryPhysics, Condensed MatterPolymer ScienceMaterials SciencePhysicsCONDUCTING POLYPYRROLEPHOSPHORUS PORPHYRINSSYNTHESIS PARAMETERSCOATED WOOLPYRROLE3-ALKYLPYRROLESSUBSTITUTIONFILMSTOSYLHYDRAZONESCondensed Matter Physics