Hydrogel-Mediated Mineralization Generates Oriented Crystalline Films Comprising Granular-Rhombohedral Heterogeneous Structures
Hydrogel-Mediated Mineralization Generates Oriented Crystalline Films Comprising Granular-Rhombohedral Heterogeneous Structures
复制标题
水凝胶介导的矿化产生包含颗粒菱面体异质结构的定向晶体膜
DOI：
10.1021/acs.langmuir.1c00863
复制
发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
Yuan Jiang
中科院分区：
文献类型：
--
作者：
Yu-xuan Feng;Yue-E Wen;Xiang-Dong Liu;Xiaopeng Xiong;Yuan Jiang
凝胶介导结晶是制备自组织材料的常用方法，是自下而上制备功能复合材料的基础。然而，在水凝胶基质中的矿化在具有定制的异质结构的结晶产物的生成中仍然是经验性的。我们证明，就业的水凝胶与适当的阳离子扩散可以触发连续增长的定向，颗粒菱面体异质结构。可控的morphogenesis导致连续的方解石碳酸钙薄膜，包括空间异质性，外延匹配assumedly有利于连续沉积的颗粒和菱面体层。连续生长的情况下公开，其中颗粒层的厚度可以成为一个有价值的指标，以反映结晶的延迟程度。水凝胶的物理化学性质的评价最终建立了水凝胶的阳离子扩散性和异质结构的外观之间的直接相关性。因此，目前的工作揭示了实施合理的形态发生的方法与定制的复杂架构的结晶材料。
Gel-mediated crystallization is a common system to produce self-organized materials, which is fundamental to the development of bottom-up approaches to functional complex materials. Mineralization in hydrogel matrices nevertheless remains empirical in the generation of crystallization products with tailored heterogeneous structures. We demonstrate that the employment of the hydrogels with proper cationic diffusivity can trigger the consecutive growth of oriented, granular-rhombohedral heterogeneous structures. The controllable morphogenesis leads to continuous calcitic CaCO3films comprising spatial heterogeneity, where epitaxial match assumedly favors the successive deposition of both granular and rhombohedral layers. The scenario of consecutive growth is disclosed, where the thickness of the granular layers can become a valuable indicator to reflect the retardancy degree of crystallization. The evaluation of the physicochemical properties of the hydrogels finally establishes a direct correlation between the cationic diffusivity of the hydrogels and the appearance of the heterogeneous structures. The current work therefore sheds light on the implementation of rational morphogenetic approaches to crystalline materials with tailored complex architectures.