Two-dimensional (2D) nanomaterials, especially 2D organic nanomaterials with unprecedentedly diverse and controlled structure, have attracted decent scientific interest. Among the preparation strategies, the top-down approach is one of the considered low-cost and scalable strategies to obtain 2D organic nanomaterials. However, some factors of their layered counterparts limited the development and potential applications of 2D organic nanomaterials, such as type, stability, and strict synthetic conditions of layered counterparts. We report a class of layered solvent knitting hyper-cross-linked microporous polymers (SHCPs) prepared by improving Friedel-Crafts reaction and using dichloroalkane as an economical solvent, stable electrophilic reagent, and external cross-linker at low temperature, which could be used as layered counterparts to obtain previously unknown 2D SHCP nanosheets by method of ultrasonic-assisted solvent exfoliation. This efficient and low-cost strategy can produce previously unreported microporous organic polymers with layered structure and high surface area and gas storage capacity. The pore structure and surface area of these polymers can be controlled by tuning the chain length of the solvent, the molar ratio of AlCl3, and the size of monomers. Furthermore, we successfully obtain an unprecedentedly high–surface area HCP material (3002 m2 g?1), which shows decent gas storage capacity (4.82 mmol g?1 at 273 K and 1.00 bar for CO2; 12.40 mmol g?1 at 77.3 K and 1.13 bar for H2). This finding provides an opportunity for breaking the constraint of former knitting methods and opening up avenues for the design and synthesis of previously unknown layered HCP materials.
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机译：二维（2D）纳米材料，尤其是具有前所未有的多样化和受控结构的2D有机纳米材料，引起了人们的科学兴趣。在制备策略中，自上而下的方法是获得二维有机纳米材料的低成本且可扩展的策略之一。然而，它们的分层对应物的一些因素限制了二维有机纳米材料的开发和潜在应用，例如分层对应物的类型，稳定性和严格的合成条件。我们报告了一类通过改进Friedel-Crafts反应并使用二氯烷烃作为经济溶剂，稳定的亲电试剂和低温下的外部交联剂制备的层状针织超交联微孔聚合物（SHCP）。作为层状对应物，通过超声辅助溶剂剥离法获得以前未知的2D SHCP纳米片。这种有效且低成本的策略可以生产以前未报告的微孔有机聚合物，其具有分层结构，高表面积和储气量。这些聚合物的孔结构和表面积可以通过调节溶剂的链长，AlCl 3 的摩尔比和单体的大小来控制。此外，我们成功地获得了前所未有的高表面积HCP材料（3002 m 2 g ？1 ），它显示出了不错的储气量（4.82 mmol g ？1）。 CO 2 在273 K和1.00 bar下为1 ; H 2 在77.3 K和1.13 bar下为12.40 mmol g ？1 ）。这一发现为打破以前的编织方法的限制提供了机会，并为设计和合成以前未知的分层HCP材料开辟了道路。
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