Anisotropic Growth of Conducting Polymers along Heparin-Modified Surfaces

Abstract

We have studied the possibility of making biocompatible, conductive patterns on a substrate by controlling the lateral growth rate of conducting polymers upon electropolymerization. Surface modification with heparin was found to enhance the lateral growth of polypyrrole, especially in the presence of dodecylbenzenesulfonate, and thus the micropatterning of heparin around electrodes leads to the formation of polypyrrole patterns.

Lateral Growth of MoS2 2D Material Semiconductors Over an Insulator Via Electrodeposition

“…described the electrochemical growth of poly(pyrrole) from an electrode out over the surface of an insulator, controlled by modification of the insulator surface. [ 24–26 ] More recently, Kobayashi et al. has showed that the lateral growth rate of Au from an Au electrode film can be increased via the surface treatment of SiO 2 .…”

Conducting Polymer Electrodes Printed on Hydrogel

“…The growth in the vertical direction into the gel film was also ∼5 μm, as judged from the cross-section observation (Figure d). Such isotropic polymer growth was ensured by the previous hydrophilic modification of the glass plate with aminosilane molecules, without which the hydrophobic or naturally impure glass surface often caused anisotropic polymer growth along the substrate surface …”

Enhancing electrochromic contrast and redox stability of nanostructure polypyrrole film doped by heparin as polyanion in different solvents

“…Until now, polypyrrole (PPy) has been one of the most commonly studied polymer due to its relative low oxidation potential, high stability, biocompatibility, ease of surface modification, thermal and environmental stability in air and aqueous media, and excellent electrical properties . PPy is excellent candidate for bioelectrode materials microelectronics industry, including battery technology, photovoltaic devices, light emitting diodes, and electrochromic displays . Electrodepositions of PPy are carried out using proper anions as dopant that is immobilized by the new‐made polycationic polymer chains, in order to achieve electroneutrality …”