A method for simply and controllably modifying the surface of polyaniline nanofibres is described. The technique can be used to attach substituents bearing both acid and amine functional groups, making the materials suitable for further modification. Acid/amine functionalisation is achieved by a simple reflux reaction and therefore is a quick and easily scalable process. The modified nanofibres maintain their ability to switch between different states displaying distinctly different properties, thus making them suitable for adaptive sensing applications. As an example, we demonstrate how biomolecules can be attached to these functionalised nanofibres, to produce conducting polymer-based biosensors.
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Huang, J. X.; Virji, S.; Weiller, B. H.; Kaner, R. B., Polyaniline nanofibers: Facile synthesis and chemical sensors. Journal of the American Chemical Society 2003, 125, (2), 314–315.
Virji, S.; Kaner, R. B.; Weiller, B. H., Hydrogen sensors based on conductivity changes in polyaniline nanofibers. Journal of Physical Chemistry B 2006, 110, (44), 22266–22270.
Virji, S.; Kaner, R. B.; Weiller, B. H., Hydrazine detection by polyaniline using fluorinated alcohol additives. Chemistry of Materials 2005, 17, (5), 1256–1260.
Virji, S.; Huang, J. X.; Kaner, R. B.; Weiller, B. H., Polyaniline nanofiber gas sensors: Examination of response mechanisms. Nano Letters 2004, 4, (3), 491–496.
Virji, S.; Fowler, J. D.; Baker, C. O.; Huang, J. X.; Kaner, R. B.; Weiller, B. H., Polyaniline manofiber composites with metal salts: Chemical sensors for hydrogen sulfide. Small 2005, 1, (6), 624–627.
Lahiff, E., Bell, S, Diamond, D., Functionalised Nanostructured Polyaniline – A New Substrate for Building Adaptive Sensing Surfaces. Mater. Res. Soc. Symp. Proc. 2008, 1054, 1054-FF05-05.
Lahiff, E.; Woods, T.; Blau, W.; Wallace, G. G.; Diamond, D., Synthesis and characterisation of controllably functionalised polyaniline nanofibres. Synthetic Metals 2009, 159, (7–8), 741–748.
Lahiff, E., Scarmagnani, S, Schazmann, B, Cafolla, A, Diamond, D., Covalent Attachment of Functional Side-Groups to Polyaniline Nanofibres. International Journal of Nanomanufacturing. 2010, 5, (1/2), 88–99.
Lahiff, E., Lynam, C, Gilmartin, N, Diamond, D, O’Kennedy, R., Polyaniline nanofibre transducers for Immunoassays. Nanoscale 2009, Submitted.
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Lahiff, E., Lynam, C., Gilmartin, N. et al. Controllable Chemical Modification of Polyaniline Nanofibres. MRS Online Proceedings Library 1240, 602 (2009). https://doi.org/10.1557/PROC-1240-WW06-02