Liquid Crystalline Polythiophenes With Amphiphilic Side Chains

✍ Scribed by Young-Sik Yoon; Taeyun Ko; Jaeyub Chung; Jae-Seung Chung; Jin-joo Kim; Jong-Chan Lee

• Book ID: 102942024
• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 1002 KB
• Volume: 213
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201100576

✦ Synopsis

Abstract

A series of poly(thiophene) derivatives with decyl‐oligo(oxyethylene) side groups, (PD__n__ET) is synthesized via oxidative coupling polymerization. PD3ET and PD4ET with longer oligo(oxyethylene) units exhibited a liquid crystalline phase with well‐ordered lamella structures, although PD3ET showed a more ordered structure than PD4ET. PD1ET and PD2ET have shorter oligo(oxyethylene) groups than PD3ET and show less‐ordered structures with liquid‐crystalline phase observed. The UV‐vis spectra indicated that the maximum absorption wavelengths of PD__n__ET increase when the number of oxyethylene units increases from 1 to 3; however, the maximum absorption wavelength of PD4ET is lower than that of PD3ET. Therefore, the most ordered and conjugated structures are obtained when the number of oxyethylene units is three.