Lehrstuhl für Anorganische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
Lehrstuhl für Physikalische Chemie II, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
Angew Chem Int Ed Engl. 2016 Jun 20;55(26):7398-402. doi: 10.1002/anie.201601611. Epub 2016 May 3.
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.
有序的层状材料异质结构中，具有不同反应性的夹层在堆积中严格交替，提供了预定的滑移面，为双层材料的制备提供了精确的途径。我们利用这条途径合成了一种新型的增强型层状硅酸盐双层材料，其硬度比相应的单层材料高出 15%。此外，我们还将证明，通过渗透压膨胀引发双层的断裂，可以获得一种通用的工具包，用于不对称地修饰单层相对于其立方面的两个相互面对的基面。只需应用任意商业聚阳离子进行两个简单的步骤，就可以获得这种类脂单层。通用的合成途径将适用于许多其他能够进行渗透压膨胀的层状化合物，这使得该方法在各种材料和应用中都具有吸引力。
