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Title: Controlling Physical and Chemical Bonding of Polypyrrole to Boron Doped Diamond by Surface Termination
Authors: Ukraintsev, Egor
Kromka, Alexander
JANSSEN, Wiebke 
Rezek, Bohuslav
Issue Date: 2013
Publisher: ESG
Abstract: To elucidate and to control polypyrrole (PPy) attachment to diamond we electrochemically grow PPy layers on hydrogen- and oxygen-terminated boron doped diamonds (BDD). Atomic force microscopy (AFM) shows that the PPy layers have similar morphology (15 nm features) and thickness (> 5 nm) on H- and O-BDD. To resolve type of PPy-diamond bonding, scanning electron microscopy (SEM) is used to compare intensity of secondary electron emission from original BDD regions and regions where PPy was grown and removed by AFM tip. The intensity on O-BDD remains unchanged. The intensity on H-BDD is lower than where the PPy was removed. This indicates chemical bonding (covalent) of PPy to H-BDD and physisorption (non-covalent) of PPy on O-BDD. This conclusion is corroborated by Kelvin force microscopy and by a model of energetic bands and electron affinity on the diamond surface.
Notes: [Ukraintsev, Egor; Kromka, Alexander; Rezek, Bohuslav] Inst Phys ASCR, Prague, Czech Republic. [Janssen, Wiebke; Haenen, Ken] Hasselt Univ, Inst Mat Res IMO, Diepenbeek, Belgium. [Janssen, Wiebke; Haenen, Ken] IMEC VZW, IMOMEC, Diepenbeek, Belgium.
Keywords: Electrochemical Growth; Polypyrrole; Boron Doped Diamond; Scanning Electron Microscopy; Kelvin Force Microscopy;Electrochemistry
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ISSN: 1452-3981
e-ISSN: 1452-3981
ISI #: 000316562800002
Category: A1
Type: Journal Contribution
Validations: ecoom 2014
Appears in Collections:Research publications

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