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Bio‐Inspired Dopamine Functionalization of Polypyrrole for Improved Adhesion and Conductivity
Author(s) -
Zhang Wei,
Yang Fut K.,
Pan Zihe,
Zhang Jian,
Zhao Boxin
Publication year - 2014
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201300761
Subject(s) - polypyrrole , surface modification , biocompatibility , materials science , conductive polymer , conductivity , adhesion , polymer , adhesive , chemical engineering , polymer chemistry , pyrrole , biomolecule , nanotechnology , chemistry , composite material , organic chemistry , polymerization , layer (electronics) , engineering , metallurgy
We report the functionalization of polypyrrole (PPy) with a “sticky” biomolecule dopamine (DA), which mimics the essential component of mussel adhesive protein. PPy is one of the most promising electrically conductive polymers with good biocompatibility. The research findings reveal that the DA functionalization enhances the dispersibility and stability of PPy in water and its film adhesion to substrate surface significantly. The electrical conductivity of PPy increases to a maximum value and then decreases with the increasing DA concentration. An optimal DA to pyrrole (Py) mole ratio is found to be between 0.1 and 0.2, at which both conductivity and adhesion of DA‐functionalized PPy has been improved.