Synthesis and characterization of graft polystyrenes with para-substituted ¦Ð-conjugated oligo(carbazole) and oligo(carbazole-thiophene) moieties for organic field-effect transistors

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• 作者：Gung-Pei Chang ; Ching-Nan Chuang ; Jong-Yih Lee ; Yung-Shen Chang ; Man-kit Leung ; Kuo-Huang Hsieh
• 关键词：Organic field-effect transistor (OFET) ; Graft polymers ; Free radical polymerization
• 刊名：Polymer
• 出版年：2013
• 出版时间：21 June, 2013
• 年：2013
• 卷：54
• 期：14
• 页码：3548-3555
• 全文大小：1733 K

文摘

In this research, two styrene-derivative monomers based on bicarbazole and carbazole-bithiophene-carbazole (Font"">StCz2 and StCzT2Cz) were prepared and further free-radical polymerized (PStCz2 and PStCzT2Cz) to form graft ¦Ð-conjugated polymers. The thermal, optical, and electrochemical properties of these studied monomers and polymers were fully characterized for studying the relationships of the structures to the properties. The field-effect characteristics of the polymers were also studied, a highest hole mobility on the order of 1.1?¡Á?10^?3 cm²V^?1s^?1 was obtained with PStCzT2Cz. The morphology of the polymeric active layers was also investigated with X-ray diffraction and atomic force microscopy to realize the relationships of the structures to the electric characteristics.