title: Size-Controlled Fabrication of Polyaniline Microfibers Based on 3D Hydrodynamic Focusing Approach.
abstract: Owing to the relatively high conductivity and unique redox behavior, polyaniline (PANI) has been one of the most technologically promising conducting polymers. Although various methodologies have been developed, fabrication of PANI microfibers has been a challenging task owing to the poor solubility in most organic solvents. By taking advantage of a microfluidic technology and organic soluble acid labile t-Boc-protected PANI (t-Boc-PANI) as the conducting polymer precursor, fabrication of PANI microfibers in a size-controlled manner is possible. Introduction of a THF solution containing t-Boc-PANI, and dodecylbenzenesulfonic acid (DBSA) as a core flow, and water as a sheath flow into a microfluidic channel with a 3D hydrodynamic focusing effect results in crystallization of the polymer fiber. By changing the flow rate, linear PANI microfibers that range from 16.2 to 39.4 μm in diameter are readily obtained.
authors.affiliation: Department of Mechanical Convergence Engineering and Institute of Nano Science and Technology, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Imsung
authors.initials: I
authors.lastname: Yoo
authors.affiliation: Department of Mechanical Convergence Engineering and Institute of Nano Science and Technology, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Simon
authors.initials: S
authors.lastname: Song
authors.affiliation: Department of Chemical Engineering and Institute of Nano Science and Technology, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Kyungchan
authors.initials: K
authors.lastname: Uh
authors.affiliation: Institute of Nano Science and Technology, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Chan Woo
authors.initials: CW
authors.lastname: Lee
authors.affiliation: Department of Chemical Engineering and Institute of Nano Science and Technology, Hanyang University, Seoul, 133-791, Korea.
authors.forename: Jong-Man
authors.initials: JM
authors.lastname: Kim
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D001557:Benzenesulfonates / Q000737:chemistry; D003460:Crystallization; D004553:Electric Conductivity; D005663:Furans / Q000737:chemistry; D057446:Hydrodynamics; D044085:Microfluidics / Q000295:instrumentation / Q000379:methods*; D010316:Particle Size; D012995:Solubility; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D000814:Aniline Compounds; D001557:Benzenesulfonates; D005663:Furans; C416807:polyaniline; D014867:Water; C018674:tetrahydrofuran; C001114:dodecylbenzenesulfonic acid
keywords: 3D hydrodynamic focusing; PANI; microfiber; microfluidic chip; polyaniline