Polymerization Model for Hydrogen Peroxide Initiated Synthesis of Polypyrrole Nanoparticles

Abstract

A very simple, environmentally friendly, one-step oxidative polymerization route to fabricate polypyrrole (Ppy) nanoparticles of fixed size and morphology was developed and investigated. The herein proposed method is based on the application of sodium dodecyl sulfate and hydrogen peroxide, both easily degradable and cheap materials. The polymerization reaction is performed on 24 h time scale under standard conditions. We monitored a polaronic peak at 465 nm and estimated nanoparticle concentration during various stages of the reaction. Using this data we proposed a mechanism for Ppy nanoparticle formation in accordance with earlier emulsion polymerization mechanisms. Rates of various steps in the polymerization mechanism were accounted for and the resulting particles identified using atomic force microscopy. Application of Ppy nanoparticles prepared by the route presented here seems very promising for biomedical applications where biocompatibility is paramount. In addition, this kind of synthesis could be suitable for the development of solar cells, where very pure and low-cost conducting polymers are required.

A novel, rapid synthetic protocol for controllable sizes, conductivities and monomer units of soluble polypyrrole

“…The chemical polymerization of pyrrole can be accomplished using dispersive polymerization [20], interfacial polymerization [21,22], seeding techniques [23,24], emulsion polymerization [25,26], etc. Surfactant-assisted emulsion techniques offer facile routes for synthesizing PPy whereby interesting optical, electrical and morphological properties can be achieved in conjunction with easy removal of templates.…”

Enzymatic polymerization of polythiophene by immobilized glucose oxidase

“…Some examples of oxidizers initiating polymerization of PTP are FeCl 3 , H 2 O 2 , CuClO 4 , etc. [18,19]. It is possible to entrap a variety of molecules into the PTP-based layer in order to change its parameters, such as electrical conductivity [20].…”

Enzyme mediated synthesis of polypyrrole in the presence of chondroitin sulfate and redox mediators of natural origin

“…The characteristic bands of sulfonate groups were also detected around 607 cm -1 for sample Py-SBP-VA + -CS + [11,12]. [38].…”