Molecular Basis of Mesophase Ordering in a Thiophene-Based Copolymer

• Published in: Macromolecules Vol. 41; no. 15; pp. 5709 - 5715
• Main Authors: DeLongchamp, Dean M, Kline, R. Joseph, Jung, Youngsuk, Lin, Eric K, Fischer, Daniel A, Gundlach, David J, Cotts, Sarah K, Moad, Andrew J, Richter, Lee J, Toney, Michael F, Heeney, Martin, McCulloch, Iain
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 12.08.2008
• Subjects: Applied sciences; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Properties and characterization; Thermal and thermodynamic properties; Electrical properties; Thermotropic state; Charge carrier mobility; Temperature effect; Mesomorphic state structure; Experimental study; Phase transitions; Conducting polymers; Side chain; Liquid crystal polymers; Aromatic copolymer; Thiophene derivative copolymer; Conformation

The carrier mobility of poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) semiconductors can be substantially enhanced after heating through a thermotropic mesophase transition, which causes a significant improvement in thin film structural order. By directly measuring film structure through...