Electrospun Polyacrylonitrile/Polythiophene Fibers for Phosphate Anion Sensing

Authors : Neslihan NOHUT MAŞLAKCI

Pages : 6-12

Doi:10.30516/bilgesci.815271

View : 12 | Download : 7

Publication Date : 2020-12-31

Article Type : Research Paper

Abstract :Electrospun fibers are widely used in various applications such as tissue engineering, wound healing, drug delivery, materials science, chemical industry, energy storage, and sensor thanks to their combination of unique properties such as large surface area, high mechanical stability, high porosity, and great electrical conductivity. In addition, conducting polymers insert ignore into journalissuearticles values(CPs); used in fiber structures offer an extraordinary range of materials due to their diverse properties such as electrical and optical properties, the possibility of both chemical and electrochemical synthesis, and ease of processing. Among CPs, polythiophene insert ignore into journalissuearticles values(PTh); is highly important due to its unique redox electrical behavior, ease of synthesis, and application in many fields. In this study, 10 wt% polyacrylonitrile insert ignore into journalissuearticles values(PAN); fibers insert ignore into journalissuearticles values(P1);, 10 wt% PAN/1 wt% PTh fibers insert ignore into journalissuearticles values(P2);, and 10 wt% PAN/3 wt% PTh fibers insert ignore into journalissuearticles values(P3); were produced using an electrospinning technique. The structures, the morphologies and the electroactivities of the electrospun fibers were characterized by Fourier transform infrared spectroscopy insert ignore into journalissuearticles values(FTIR);, Scanning electron microscopy-energy dispersive X-ray spectroscopy insert ignore into journalissuearticles values(SEM-EDX);, Thermogravimetric analysis insert ignore into journalissuearticles values(TGA);, and Cyclic voltammetry insert ignore into journalissuearticles values(CV);. FTIR, SEM-EDX and TGA results supported the presence of PTh in PAN fibers. The electrochemical behaviors of indium-tin-oxide insert ignore into journalissuearticles values(ITO); glasses coated with the P1, P2, and P3 fibers in phosphate buffer solution insert ignore into journalissuearticles values(PBS); at various concentrations were assessed by CV. These electrospun fibers containing PTh were used for phosphate anion sensing. For all fiber samples, the oxidation potential increased with a decreasing concentration of phosphate buffer solution. The obtained results indicated that the thermal stability and electrical conductivity of the fibers were affected by PTh. This study shows that PAN fibers containing PTh as anionic sensors can be used as new recognition models.
Keywords : Anion sensing, electrospinning, fiber, polyacrylonitrile, polythiophene