Nanoscale Morphology, Dimensional Control, and Electrical Properties of Oligoanilines
- 14 July 2010
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 132 (30), 10365-10373
- https://doi.org/10.1021/ja1014184
Abstract
While nanostructures of organic conductors have generated great interest in recent years, their nanoscale size and shape control remains a significant challenge. Here, we report a general method for producing a variety of oligoaniline nanostructures with well-defined morphologies and dimensionalities. 1-D nanowires, 2-D nanoribbons, and 3-D rectangular nanoplates and nanoflowers of tetraaniline are produced by a solvent exchange process in which the dopant acid can be used to tune the oligomer morphology. The process appears to be a general route for producing nanostructures for a variety of other aniline oligomers such as the phenyl-capped tetramer. X-ray diffraction of the tetraniline nanostructures reveals that they possess different packing arrangements, which results in different nanoscale morphologies with different electrical properties for the structures. The conductivity of a single tetraaniline nanostructure is up to 2 orders of magnitude higher than the highest previously reported value and rivals that of pressed pellets of conventional polyaniline doped with acid. Furthermore, these oligomer nanostructures can be easily processed by a number of methods in order to create thin films composed of aligned nanostructures over a macroscopic area.Keywords
This publication has 48 references indexed in Scilit:
- Polyaniline Nanofibers: A Unique Polymer Nanostructure for Versatile ApplicationsAccounts of Chemical Research, 2008
- Aniline Oligomers – Architecture, Function and New Opportunities for Nanostructured MaterialsMacromolecular Rapid Communications, 2008
- One‐Step Patterning of Aligned Nanowire Arrays by Programmed Dip CoatingAngewandte Chemie-International Edition, 2007
- Crystal structure and morphology of phenyl-capped tetraaniline in the leucoemeraldine oxidation stateJournal of Polymer Science Part B: Polymer Physics, 2006
- High performance electrochemical supercapacitor from electrochemically synthesized nanostructured polyanilineMaterials Letters, 2005
- A General Chemical Route to Polyaniline NanofibersJournal of the American Chemical Society, 2003
- Camphorsulfonic Acid Fully Doped Polyaniline Emeraldine Salt: Conformations in Different Solvents Studied by an Ultraviolet/Visible/Near-Infrared Spectroscopic MethodChemistry of Materials, 1995
- The concept of secondary doping as applied to polyanilineSynthetic Metals, 1994
- The structure of a novel polymeric metal: Acceptor-doped polyanilineSynthetic Metals, 1988
- Infrared optical properties of water and ice spheresIcarus, 1968