Block copolymer nanostructures mapped by far-field optics.
Block copolymer nanostructures mapped by far-field optics.
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DOI：
10.1021/nl901378e
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发表时间：
2009-05
期刊：
影响因子：
10.8
通讯作者：
C. Ullal;R. Schmidt;S. Hell;A. Egner
中科院分区：
文献类型：
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作者：
C. Ullal;R. Schmidt;S. Hell;A. Egner
我们展示了使用相对物镜的受激发射损耗显微镜，以聚焦光在三个维度上非侵入性地揭示嵌段共聚物的纳米级形态。这在聚（苯乙烯-嵌段-2-乙烯基吡啶）模型系统中得到了例证，其中通过用荧光染料对乙烯基吡啶相进行特异性染色来实现对比度。我们对大量样品中膨胀引起的中孔和其他复杂结构进行成像，其规模迄今为止需要电子和扫描探针显微镜。
We demonstrate stimulated emission depletion microscopy using opposing objective lenses to noninvasively reveal the nanoscale morphology of block copolymers in three dimensions with focused light. This is exemplified in a poly(styrene-block-2-vinylpyridine) model system in which contrast is achieved by specifically staining the vinylpyridine phase with a fluorescent dye. We image swelling induced mesopores and other convoluted structures within the bulk of samples, at scales that have so far required electron and scanning probe microscopes.