Template synthesis of imine-based covalent organic framework core-shell structure and hollow sphere: a case of COFTTA-DHTA
Template synthesis of imine-based covalent organic framework core-shell structure and hollow sphere: a case of COFTTA-DHTA
复制标题
亚胺基共价有机骨架核壳结构和空心球的模板合成：以COFTTA-DHTA为例
DOI：
10.1007/s11426-017-9071-0
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发表时间：
2017-07
期刊：
影响因子：
--
通讯作者：
Wan Lijun
中科院分区：
文献类型：
--
作者：
Sun Bing;Wang Dong;Wan Lijun
可控地合成具有均匀形貌和尺寸的良好分散的共价有机框架（COF）仍然是一个挑战。在此，我们报道了在溶剂热条件下，以氨基功能化SiO2微球为模板，通过逐步加入初始单体分子，模板导向合成COFTTA-DHTA核壳杂化材料. SiO2模板表面修饰的氨基在NH 2-f-SiO2@ COFTTA-DTA核壳杂化物的形成中起着重要作用。通过对NH 2-f-SiO2@ COFTTA-DHTA的SiO2核进行刻蚀，可以得到COFTTA-DHTA空心球。NH 2-f-SiO2@COFTTA-DHTA和COFTTA-DHTA空心球均具有良好的形态、高结晶度和孔隙率、优异的分散性和高化学稳定性。该模板合成方法为COF基材料的形状控制合成提供了一种通用的方法，对于COF基材料在储能、药物释放和催化等领域的进一步应用具有重要意义。
Controllably synthesizing well-dispersed covalent organic frameworks (COFs) with uniform both morphology and size is still a challenge. Herein, we report the template-directed synthesis of COFTTA-DHTA-based core-shell hybrids under solvothermal conditions by using amino-functionalized SiO2microspheres as templates coupled with stepwise addition of initial monomer molecules. The modified amino groups on the surfaces of SiO2templates play an important role in the formation of well-defined NH2-f-SiO2@COFTTA-DHTAcore-shell hybrids. COFTTA-DHTAhollow spheres can be obtained by etching SiO2cores of NH2-f-SiO2@COFTTA-DHTA. Both the NH2-f-SiO2@COFTTA-DHTAand COFTTA-DHTAhollow spheres possess the well-defined morphology, high crystallinity and porosity, excellent dispersion property and high chemical stability. The template synthesis method demonstrated in this work provides a general method for the shape-controlled synthesis of COF-based materials, which is important for the further applications in the fields such as energy storage, drug delivery and catalysis.
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