Random-Graft Polymer-Directed Synthesis of Inorganic Mesostructures with Ultrathin Frameworks
Random-Graft Polymer-Directed Synthesis of Inorganic Mesostructures with Ultrathin Frameworks
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DOI：
10.1002/anie.201310748
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发表时间：
2014-05-12
影响因子：
16.6
通讯作者：
Ryoo, Ryong
中科院分区：
文献类型：
--
作者：
Jo, Changbum;Seo, Yongbeom;Ryoo, Ryong
合成介观结构材料的一种广泛采用的途径是使用表面活性剂胶束或两亲性嵌段共聚物作为结构导向剂。描述了一种通用的合成方法，用于介观结构材料，该介观结构材料由使用无定形线性链聚合物的无规分布的侧基官能化的无机骨架组成，所述侧基可以参与无机结晶。侧基与无机物质的紧密结合在聚合物主链中强制应变，将结晶限制在胶束尺度。这种方法被证明为各种材料，如分层纳米多孔沸石，其铝磷酸盐类似物，亚纳米厚度的二氧化钛纳米片，和介孔二氧化钛，二氧化锡，和氧化锆。这种聚合物导向的合成有望以简单和可大规模生产的方式拓宽我们对未开发的介观结构材料的可及性。
A widely employed route for synthesizing mesostructured materials is the use of surfactant micelles or amphiphilic block copolymers as structure-directing agents. A versatile synthesis method is described for mesostructured materials composed of ultrathin inorganic frameworks using amorphous linear-chain polymers functionalized with a random distribution of side groups that can participate in inorganic crystallization. Tight binding of the side groups with inorganic species enforces strain in the polymer backbones, limiting the crystallization to the ultrathin micellar scale. This method is demonstrated for a variety of materials, such as hierarchically nanoporous zeolites, their aluminophosphate analogue, TiO2 nanosheets of sub-nanometer thickness, and mesoporous TiO2, SnO2, and ZrO2. This polymer-directed synthesis is expected to widen our accessibility to unexplored mesostructured materials in a simple and mass-producible manner.