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Surprising Volume Change in PPy(DBS): An Atomic Force Microscopy Study
Author(s) -
Smela Elisabeth,
Gadegaard Nikolaj
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199908)11:11<953::aid-adma953>3.0.co;2-h
Subject(s) - polypyrrole , materials science , kelvin probe force microscope , atomic force microscopy , polymer , nanotechnology , microsystem , volume (thermodynamics) , microscopy , conductive polymer , doping , conductive atomic force microscopy , thin film , chemical engineering , analytical chemistry (journal) , composite material , optoelectronics , polymerization , optics , environmental chemistry , thermodynamics , chemistry , engineering , physics
Conjugated polymers such as polypyrrole (PPy) have potential use as artificial muscles or in microsystems such as valves for microfluid handling. One of the most important parameters in such uses is the magnitude of volume change during associated redox processes; however, until now, estimates have varied greatly. Atomic force microscopy is reported here as allowing direct measurement of the in situ thickness change during oxidation and reduction of thin films of PPy doped with dodecylbenzenesulfonate.