Controlled Exfoliation of Layered Silicate Heterostructures into Bilayers and Their Conversion into Giant Janus Platelets.
Controlled Exfoliation of Layered Silicate Heterostructures into Bilayers and Their Conversion into Giant Janus Platelets.
复制标题
DOI：
10.1002/anie.201601611
复制
发表时间：
2016-06
影响因子：
--
通讯作者：
Matthias Stöter;Sebastian Gödrich;Patrick Feicht;S. Rosenfeldt;H. Thurn;J. Neubauer;Maximilian Seuss;Peter Lindner;H. Kalo;Michael W. Möller;A. Fery;S. Förster;G. Papastavrou;J. Breu
中科院分区：
文献类型：
--
作者：
Matthias Stöter;Sebastian Gödrich;Patrick Feicht;S. Rosenfeldt;H. Thurn;J. Neubauer;Maximilian Seuss;Peter Lindner;H. Kalo;Michael W. Möller;A. Fery;S. Förster;G. Papastavrou;J. Breu
其中具有不同反应性的夹层在堆叠中严格交替的层状材料的有序异质结构提供预定的滑移平面，其为双层材料的制备提供精确的路线。我们使用这种途径合成一种新型的增强层状硅酸盐双层，其比相应的单层刚性高15%。此外，我们将证明，触发分裂的双分子层的渗透溶胀提供了一个通用的工具箱，两个相对维斯站立的基底平面的单分子层的不对称修改。只需两个简单的步骤，应用任意的商业聚阳离子，需要获得这样的Janus型单层。通用的合成路线将适用于许多其他层状化合物能够渗透溶胀，使这种方法有趣的各种材料和应用。
Ordered heterostructures of layered materials where interlayers with different reactivities strictly alternate in stacks offer predetermined slippage planes that provide a precise route for the preparation of bilayer materials. We use this route for the synthesis of a novel type of reinforced layered silicate bilayer that is 15 % stiffer than the corresponding monolayer. Furthermore, we will demonstrate that triggering cleavage of bilayers by osmotic swelling gives access to a generic toolbox for an asymmetrical modification of the two vis-à-vis standing basal planes of monolayers. Only two simple steps applying arbitrary commercial polycations are needed to obtain such Janus-type monolayers. The generic synthesis route will be applicable to many other layered compounds capable of osmotic swelling, rendering this approach interesting for a variety of materials and applications.