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In Situ Electrochemical Polymerization at Air-Water Interface: Surface-Pressure-Induced, Graphene-Oxide-Assisted Preferential Orientation of Polyaniline

Ramesha, GanganahalliK and Kumara, Vijaya A and Sampath, Srinivasan (2012) In Situ Electrochemical Polymerization at Air-Water Interface: Surface-Pressure-Induced, Graphene-Oxide-Assisted Preferential Orientation of Polyaniline. In: JOURNAL OF PHYSICAL CHEMISTRY C, 116 (26). pp. 13997-14004.

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Official URL: http://dx.doi.org/10.1021/jp302782w

Abstract

In situ electrochemical polymerization of aniline in a Langmuir trough under applied surface pressure assists in the preferential orientation of polyaniline (PANI) in planar polaronic structure. Exfoliated graphene oxide (EGO) spread on water surface is used to bring anilinium cations present in the subphase to air-water interface through electrostatic interactions. Subsequent electrochemical polymerization of aniline under applied surface pressure in the Schaefer mode results in EGO/PANT composite with PANT in planar polaronic form. The orientation of PANI is confirmed by electrochemical and Raman spectroscopic studies. This technique opens up possibilities of 2-D polymerization at the air-water interface. Electrochemical sensing of hydrogen peroxide is used to differentiate the activity of planar and coiled forms of PANI toward electrocatalytic reactions.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to American Chemical Society
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 03 Aug 2012 05:09
Last Modified: 03 Aug 2012 05:12
URI: http://eprints.iisc.ernet.in/id/eprint/44883

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