Fabrication of Ordered Poly[1,6-bis(3-nonyl-9-carbazolyl)-2,4-hexadiyne] Thin Film via Simple Spin-coating Process
作者:Yuuki Miyazaki、Kazuo Okamoto、Kousuke Tsuchiya、Kenji Ogino
DOI:10.1246/cl.130447
日期:2013.10.5
Diacetylene derivative, 1,6-bis(3-nonyl-9-carbazolyl)-2,4-hexadiyne was designed and synthesized. Compared with nonsubstituted 1,6-di(N-carbazolyl)-2,4-hexadiyne, the solubility was drastically improved, which allowed us the fabrication of a smooth crystalline thin film via a simple spin-coating process. The resulting film was easily polymerized by photoirradiation after thermal annealing. UV–vis absorption and Raman scattering spectra suggested topochemical polymerization. Out-of-plane XRD measurement of spin-coated film showed a strong diffraction. It suggests the interdigitation structure of alkyl chain. In-plane XRD measurements of spin-coated polymerized films showed two small peaks which were not identical to the result of out-of-plane XRD. These results indicated edge-on orientation. AFM image suggests that the film is composed of an aggregation consisting of needle-like nanostructures of polymer crystals.
设计并合成了丁二炔衍生物1,6-双(3-壬基-9-咔唑基)-2,4-己二炔。与未取代的1,6-二(N-咔唑基)-2,4-己二炔相比,其溶解度大大提高,这使得我们能够通过简单的旋涂工艺制备光滑的结晶薄膜。热退火后,所得膜很容易通过光照射聚合。紫外可见吸收光谱和拉曼散射光谱表明拓扑化学聚合。旋涂薄膜的面外 XRD 测量显示出强烈的衍射。它暗示了烷基链的叉指结构。旋涂聚合薄膜的面内 XRD 测量显示出两个小峰,这与面外 XRD 的结果不同。这些结果表明边缘方向。 AFM 图像表明该薄膜由聚合物晶体的针状纳米结构的聚集体组成。