Chemical Vapor Deposition of Poly(3-alkylthiophene) Nanoparticles on Fabric: Chemical and Electrochemical Characterization

摘要

Chemical vapor deposition of poly(3-methylthiophene) and poly (3-hexylthiophene) as conductive polymers on the surface of polyester fabrics was successfully obtained. Fourier transform infrared spectroscopy confirmed the formation of polymers on surface of fabrics (the fingerprint of polythiophenes, v 600–1500 cm~(-1)). The uniformity of deposition and nanoparticles (average size of 60 nm) were proved with scanning electron microscopy. Electrochemical impedance spectroscopy showed that P3HT-coated samples offer higher conductivity in compared to P3MT-coated samples. The impedance modulus of P3HT-coated samples was lowered nine times to that of row materials and reached to c8000 Ω. The samples have also shown electrochromic properties under electrical current, changing its color from yellowish green at 0 V to dark green at +12 V for poly (3-hexylthiophene) samples and from brown at 0 V to red at +12 V for poly(3-methylthiophene)-coated fabrics (V=0 V, λ=450 nm; V=12 V, λ=650 nm).