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Updated: Jun 23, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Extended 2,2'-Bipyrroles: New Monomers for Conjugated Polymers with Tailored Processability
Robert Texidó1, Gonzalo Anguera2, Sergi Colominas3
1Grup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta, 390, 08017 Barcelona, Spain. roberttexidob@iqs.url.edu.
Abstract:
The synthesis of 2,2'-bipyrroles substituted at positions 5,5' with pyrrolyl, N-methyl-pyrrolyl and thienyl groups and their application in the preparation of conducting polymers is reported herein. The preparation of these monomers consisted of two synthetic steps from a functionalized 2,2'-bipyrrole: Bromination of the corresponding 2,2'-bipyrrole followed by Suzuki or Stille couplings. These monomers display low oxidation potential compared to pyrrole because of the extended length of their conjugation pathway. The resulting monomers can be polymerized through oxidative/electropolymerization. Electrical conductivity and electrochromic properties of the electrodeposited polymeric films were evaluated using 4-point probe measurements and cyclic voltammetry to evaluate their applicability in electronics.
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