Highly Tunable Self-Assembled Nanostructures from a Poly(2-vinylpyridine-b-dimethylsiloxane) Block Copolymer
Highly Tunable Self-Assembled Nanostructures from a Poly(2-vinylpyridine-b-dimethylsiloxane) Block Copolymer
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DOI：
10.1021/nl2016224
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发表时间：
2011-10-01
期刊：
影响因子：
10.8
通讯作者：
Jung, Yeon Sik
中科院分区：
文献类型：
--
作者：
Jeong, Jae Won;Park, Woon Ik;Jung, Yeon Sik
在自组装嵌段共聚物的膜中展示了几何形状和尺寸的极大程度的可调谐性。将具有高度不相容嵌段的聚（2-乙烯基吡啶-b-二甲基硅氧烷）嵌段共聚物旋涂在图案化基底上并用各种溶剂蒸气处理。在聚（2-乙烯基吡啶）矩阵块的选择性溶胀的程度可以控制在一个广泛的范围内，导致形成各种微区形态，如球体，圆柱体，六角穿孔层状，和层状从相同的嵌段共聚物。溶胀比的系统控制和溶剂蒸气的选择提供了将非常有序的线性特征的宽度控制在6至31 nm范围内的不寻常能力。这种方法对于基于定向自组装的纳米光刻特别有用，因为单个嵌段共聚物膜可以形成具有宽范围的几何形状和尺寸的微区，而不需要改变分子量或体积分数。
An extraordinarily large degree of tunability in geometry and dimension is demonstrated in films of a self-assembled block copolymer. A poly(2-vinylpyridine-b-dimethylsiloxane) block copolymer with highly incompatible blocks was spun-cast on patterned substrates and treated with various solvent vapors. The degree of selective swelling in the poly(2-vinylpyridine) matrix block could be controlled over an extensive range, leading to the formation of various microdomain morphologies such as spheres, cylinders, hexagonally perforated lamellae, and lamellae from the same block copolymer. The systematic control of swelling ratio and the choice of solvent vapors offer the unusual ability to control the width of very well-ordered linear features within a range between 6 and 31 nm. This methodology is particularly useful for nanolithography based on directed self-assembly in that a single block copolymer film can form microdomains with a broad range of geometries and sizes without the need to change molecular weight or volume fraction.