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Polyaniline nanofibers
Polyaniline nanofibers are a high aspect form of polyaniline, a polymer consisting of aniline monomers, which appears as discrete long threads with an average diameter between 30nm and 100nm. Polyaniline is one of the oldest known conducting polymers, being known for over 150 years.〔Li, D.; Huang, J.; Kaner, R.B.; ''Acc. Chem. Res.'', 2009, 42 (1), 135–145(())〕 Polyaniline nanofibers are often studied for their potential to enhance the properties of polyaniline or have additional beneficial properties due to the addition of a nanostructure to the polymer. Properties that make polyaniline useful can be seen in the nanofiber form as well, such as facile synthesis, environmental stability, and simple acid/base doping/dedoping chemistry. These and other properties have led to the formation of various applications for polyaniline nanofibers as actuators, memory devices, and sensors.
==Synthesis==
Methods for the polymerization of polyaniline nanofibers seen in literature primarily include (oxidative ) polymerization, interfacial synthesis, and “rapid mixing” methods.〔Kavitha, B.; kumar, K.S.; Narsimlu, N.; ''Indian J. Pure Appl. Phys.'', 2013, 51 (3), 207-209(())〕〔Huang, J.; Kaner, R.B.; ''J. Am. Chem. Soc.'', 2004, 126 (3), 851–855(())〕〔Huang, J.; Virji, S.; Weiller, B.H.; Kaner, R.B.; ''J. Am. Chem. Soc.'', 2003, 125 (2), 314–315(())〕〔Huang, J.; ''Pure Appl. Chem.'', 2006, 78 (1), 15-27(())〕 Other less common methods include nanofiber seeding, electrosynthesis, electrospinning, and preforming polymerization in dilute aniline solutions.〔Chiou, N.R.; Epstein, A.J.; ''Adv. Mater.'', 2005, 17, 1679-1683(())〕
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