Novel Enzymatically Synthesized Substituted Polyaniline with High Conjugation and Conductivity. (5th March 2018)

• Record Type: Journal Article
• Authors: Bruno, Ferdinando F.; Nagarajan, Ramaswamy; Kiratitanavit, Weeradech; Favreau-Farhadi, Nicole; Yoon, Bora; Fossey, Stephen; Bernabei, Manuele
• Is Part Of: MRS advances. Volume 3:Number 27(2018)
• Page Start: 1519
• Page End: 1524
• Publication Date: 2018-03-05
• Subjects: biomaterial, -- polymer, -- electrical properties; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2018.257
• Languages: English
• ISSNs: 2059-8521

Abstract

ABSTRACT: An efficient enzymatic route for the synthesis of conducting oligomer of substituted aniline complexed with poly(sodium 4-styrenesulfonate) is presented. This polyelectrolyte assisted horseradish peroxidase catalyzed oligomerization of ortho-toluidine provides a route to synthesize water-soluble, highly conductive oligomers under acidic conditions. The UV-Vis, FTIR, thin film conductivity, molecular weight assessment and modeling studies of the oligomer/polymer complex indicate the presence of a thermally stable and electroactive oligomer with extended conjugation that was not present in similar conductive polymers (e.g. PANI). Moreover, the use of water-soluble templates provide a unique combination of properties such as high conductivity and processability. The same procedure was also implemented for the polymerization of 2, 6-xylidine: however, the reaction did not occur suggesting a much more complex stereo-specificity of the enzymatic polymerization. Modeling studies were used to explain this behavior. The conductive poly(ortho-toluidine) can be used in chemiresistive sensors for the detection of humidity.