Self-adjustable crystalline inorganic nanocoils.
Self-adjustable crystalline inorganic nanocoils.
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DOI：
10.1021/ja403065z
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发表时间：
2013-04
影响因子：
15
通讯作者：
Peng-peng Wang;Yong Yang;Zhu Jing;Xun Wang
中科院分区：
文献类型：
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作者：
Peng-peng Wang;Yong Yang;Zhu Jing;Xun Wang
蛋白质等生物大分子虽然微观结构极其复杂，但可以通过自我调节形状结晶成宏观大小的晶体，从而构建生物的结构。无机纳米线/纳米带具有类似的一维拓扑结构，但结构更简单，由于其固有的刚性，在构建超晶格结构时很难像大分子那样具有柔性。在这里，我们报道了晶体硫化铟纳米带纳米线圈的合成，它是由超薄纳米带自发自卷曲形成的。由于具有高纵横比的超薄带状结构（厚度约0.9 nm），纳米结构具有柔性和相对随机的线圈结构。此外，纳米线圈可以自调整其形状，并在溶液中组装成二维超晶格和三维超晶体。超薄纳米线圈有望为使用柔性纳米晶体作为构建上层结构的基石带来新的见解。
Biomacromolecules such as proteins, although extremely complex in microstructure, can crystallize into macro-sized crystals after self-adjusting their shapes, based on which the structure of biology is built. Inorganic nanowires/nanoribbons with a similar one-dimensional topology but much simpler structures can hardly be as flexible as macromolecules when constructing superlattice structures because of their inherent rigidity. Here we report the synthesis of crystalline indium sulfide nanoribbon-based nanocoils that are formed by spontaneous self-coiling of ultrathin nanoribbons. The nanostructures are flexible and appear as relatively random coils because of their ultrathin ribbon structures (~0.9 nm in thickness) with high aspect ratios. Moreover, the nanocoils can self-adjust their shapes and assemble into two-dimensional superlattices and three-dimensional supercrystals in solution. The ultrathin nanocoils are expected to bring new insights into the use of flexible nanocrystals as building blocks for constructing superstructures.