Alternating copolymer of bithiophene and dialkylbithiazole and its tendency to align on the surfaces
详细信息 查看全文
- 作者：Takakazu Yamamoto ; Syun-ichi Otsuka ; Kimiyasu Namekawa ; Hiroki Fukumoto ; Isao Yamaguchi ; Takashi Fukuda ; Naoki Asakawa ; Takeshi Yamanobe ; Takeshi Shiono and Zhengguo Cai
- 关键词：Conjugated polymer ; Molecular assembly ; Polyaromatics
- 刊名：Polymer
- 出版年：2006
- 出版时间：9 August 2006
- 年：2006
- 卷：47
- 期：17
- 页码：6038-6041
- 全文大小：344 K
文摘
New five-membered ring π-conjugated polymers composed of 2,2′-bithiophene and 4,4′-dialkyl-2,2′-bithiazole units were prepared. The polymers were soluble in 1,2-dichlorobenzene and showed a UV–vis peak at about 490 nm above 120 °C. Cooling the solution led to the appearance of new UV–vis peaks at 550 and 600 nm, which were considered to originate from self-assembled polymer molecules. Powder XRD (X-ray diffraction) data supported a well-stacked solid structure of the polymers and a highly ordered structure of a polymer film formed on a quartz glass substrate. These data revealed a strong tendency of the new polymers to self-assemble and to form an aligned structure on the surface of the substrates.