Author/Authors :
Yamamoto، نويسنده , , Takakazu and Otsuka، نويسنده , , Syun-ichi and Namekawa، نويسنده , , Kimiyasu and Fukumoto، نويسنده , , Hiroki and Yamaguchi، نويسنده , , Isao and Fukuda، نويسنده , , Takashi and Asakawa، نويسنده , , Naoki and Yamanobe، نويسنده , , Takeshi and Shiono، نويسنده , , Takeshi and Cai، نويسنده , , Zhengguo، نويسنده ,
Abstract :
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.
