Oriented and Nanostructured Polycarbonate Substrates for the Orientation of Conjugated Molecular Materials and Gold Nanoparticles
Oriented and Nanostructured Polycarbonate Substrates for the Orientation of Conjugated Molecular Materials and Gold Nanoparticles
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DOI：
10.1021/ma702227f
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发表时间：
2007-11
期刊：
影响因子：
5.5
通讯作者：
M. Brinkmann;S. Pratontep;A. Chaumont;J. Wittmann
中科院分区：
文献类型：
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作者：
M. Brinkmann;S. Pratontep;A. Chaumont;J. Wittmann
提出了一种制备大面积聚碳酸酯（PC）取向层的简单方法，该取向层具有高度的聚合物链取向、周期性和取向的纳米级图案以及受控的表面粗糙度。该方法包括三个步骤：（i）制备玻璃态双酚A聚碳酸酯薄膜，（ii）通过摩擦使聚合物链近表面取向，以及（iii）暴露于丙酮蒸气中，丙酮蒸气充当增塑剂，去除摩擦形成的微槽并促进溶剂诱导的PC结晶。由此产生的 PC 薄膜表面是定向和纳米结构的，它由边缘定向的结晶片层和非晶层间区域的周期性交替组成，总周期约为 20 nm。定向和纳米结构 PC 层的粗糙度可以通过调整暴露于溶剂的时间来调节。 PC 薄膜对气相生长的各种材料（例如共轭材料或...
A simple method to prepare large areas of polycarbonate (PC) alignment layers with a high degree of polymer chain orientation, a periodic and oriented nanoscale pattern, and a controlled surface roughness is presented. The method involves three steps: (i) the preparation of a film of bisphenol A polycarbonate in its glassy state, (ii) the near-surface orientation of the polymer chains by rubbing, and (iii) exposure to vapors of acetone which acts as a plasticizer removing the microgrooves formed by rubbing and promotes solvent induced crystallization of PC. The resulting surface of the PC films is oriented and nanostructured, it consists of the periodic alternation of edge-on oriented crystalline lamellae and amorphous interlamellar zones with a total periodicity of ∼20 nm. The roughness of the oriented and nanostructured PC layers can be tuned by adjusting the exposure time to the solvent. The PC films exhibit a high orienting ability for various materials grown from the vapor phase, e.g., conjugated or...