Title: Synthesis and properties of novel polymers to increase the electrochromic service life of poly(3-hexylthiophene)
Page Range: p.119-128
Author(s): Cheng-Yuan Lai; Foot P J S; Brown J W
Click Here to Download Now! – File size: (subscribers only)
Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 25
Issue No: No.2
Abstract
Poly(3-alkylthiophene)s (P3ATs) are a promising class of electrochromic materials because of their convenient processability and environmental stability. The adhesion of electroactive polymer coatings on a transparent conducting substrate is a significant factor affecting the durable colour-changing life of electrochromic devices such as visual displays and switchable windows. Traditional electrochromic coatings on transparent ITO glass electrodes often have poor cycling lifetimes, due to incompatibility between the polymers and the inorganic substrates. However, providing a covalently-bonded network between the active electrochromics and the ITO glass is an efficient method to increase the adhesion and hence to extend the service time; the research described here used Suzuki-Miyaura coupling of N-(3-trimethoxysilylpropyl)pyrrole (TMP) onto poly(3-hexylthiophene) (P3HT), as a precursor to a sol-gel reaction. The Si-O-metal network produced between the siloxane groups and metal oxide after the sol-gel reaction served to enhance the adhesion of the poly(3-hexylthiophene) onto ITO glass. With this stronger bonding, the colour-switching service time was found to be extended considerably by the observation of repeated electrochemical cycling tests. In addition, the electro-optic and electrochemical properties of copolymers with various molar substitution ratios of TMP on P3HT were investigated by cyclic voltammetry and UV-visible spectroscopy. The (pi)-(pi)
Related reading
More journal reading and science coverage connected to this topic.
Mechanical property of multiwall carbon nanotube reinforced polymer composites
Title: Mechanical property of multiwall carbon nanotube reinforced polymer composites Page Range: p.99-104 Author(s): Chao-Kai Yang; Yu-Roung Lee; Tsung-Han Hsieh; Tao-Hsing Chen; Tsung-Chieh Cheng…
Design of radar absorbing structures utilizing carbon-based polymer composites
Title: Design of radar absorbing structures utilizing carbon-based polymer composites Page Range: p.105-110 Author(s): Sang-Young Kim; Sung-Soo Kim File size: Download the pdf (subscribers…
Shear strength of concrete wide beams shear reinforced with GFRP plates
Title: Shear strength of concrete wide beams shear reinforced with GFRP plates Page Range: p.111-118 Author(s): Min Sook Kim; Joowon Kang; Young Hak Lee…