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Conducting Polypyrrole Conical Nanocontainers: Formation Mechanism and Voltage Switchable Property
Author(s) -
Huang Jiyong,
Quan Baogang,
Liu Mingjie,
Wei Zhixiang,
Jiang Lei
Publication year - 2008
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.200800196
Subject(s) - polypyrrole , materials science , conical surface , polymerization , nanotechnology , dopant , wetting , nanostructure , chemical engineering , polymer chemistry , composite material , doping , polymer , optoelectronics , engineering
Nanostructures with stimuli‐responsive properties are of great importance for the application of smart materials in nanotechnology. Unique hollow polypyrrole nanostructured arrays with a conical shape have been produced by a stepwise electropolymerization process. The polypyrrole conical nanocontainers exhibit a reversible switchable behavior between open and closed states, which is controlled by the movement of counter ions during electrically controlled reversible oxidation and reduction processes. The formation of conical nanocontainers is affected by the oleo‐wettability of the substrate. Conical nanocontainers can be formed on oleo‐phobic substrates in aqueous solution by using dopant‐stabilized pyrrole nanodroplets as the guiding template for the polymerization.