A New Near-Infrared Switchable Electrochromic Polymer and Its Device Application

作者：Sefer Emre; Koyuncu Fatma Baycan; Oguzhan Eda; Koyuncu Sermet^*

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2010, 48(20): 4419-4427.

DOI：10.1002/pola.24229

• 2,5-bis-dithienyl-1H-pyrrole (SNS)
• carbazole
• conducting polymers
• conjugated polymers
• electrochemistry
• near-infrared switchable electrochromic polymers
• UV-vis spectroscopy

A new near-infrared switchable electrochromic polymer containing carbazole pendant (poly-SNSC), synthesized by electrochemical polymerization of 2,5-bis-dithienyl-1H-pyrrole (SNS) main chain, has been prepared. The electrochemical and optical properties of SNSC monomer and its polymer have been investigated. Because of having two different electro-donor moieties; that is, carbazole and SNS, SNSC gave two separate electrochemical oxidation and also light brown color of the film in the neutral state turn into gray on oxidation. An electrochromic device, contructed in the sandwich configuration [indium tin oxide (ITO)-coated glass/anodically coloring polymer (poly-SNSC)//gel electrolyte//cathodically coloring polymer (PEDOT)/ITO-coated glass] and exhibited a high coloration efficiency (1216 cm(2) C(-1)), a very short response time (about 0.3 s), low driving voltage, and a high redox stability.

• 出版日期2010-9-15