College of Chemistry , Jilin University , Changchun 130012 , China.
ACS Appl Mater Interfaces. 2019 Dec 11;11(49):46205-46211. doi: 10.1021/acsami.9b17202. Epub 2019 Nov 27.
Two-dimensional (2D) porous polymers have demonstrated great potential in gas capture and surface catalysis as well as energy storage and conversion. Current synthesis of 2D porous polymers strongly depends on the usage of templates or an additional exfoliation process. The resultant products have uncontrollable morphology and structure, low structure integrity, and relatively low yield. Herein, a facile and high-throughput solvent-induced polymerization strategy to prepare ultrathin free-standing 2D porous hyper-cross-linked polymer nanosheets with large surface area and high sulfur content by cross-linking steric hexakis(benzylthio)benzene and thiophene is reported. Using this approach, the morphologies (nanosheets and nanotubes) and specific surface areas (658-1150 m g) of porous hyper-cross-linked polymers can be simply tailored by adjusting the cross-linking degree between monomers. The as-synthesized porous hyper-cross-linked polymer nanotubes exhibit promising iodine capture performance, including a superior iodine uptake capacity (∼270 wt %) and a rapid equilibrium adsorption (within 60 min). This method will pave a new avenue for the synthesis of advanced 2D porous polymers for various applications.
二维（2D）多孔聚合物在气体捕获和表面催化以及能量存储和转换方面表现出巨大的潜力。目前，2D 多孔聚合物的合成强烈依赖于模板的使用或额外的剥离过程。所得产物具有不可控的形态和结构、低结构完整性和相对较低的产率。在此，报道了一种通过交联位阻六（苄硫基）苯和噻吩来制备具有大表面积和高硫含量的超薄独立 2D 多孔超交联聚合物纳米片的简便、高通量溶剂诱导聚合策略。通过这种方法，通过调节单体之间的交联度，可以简单地调整多孔超交联聚合物的形态（纳米片和纳米管）和比表面积（658-1150 m g）。合成的多孔超交联聚合物纳米管表现出有前途的碘捕获性能，包括较高的碘吸收能力（约 270wt%）和快速平衡吸附（在 60 分钟内）。该方法将为各种应用的先进 2D 多孔聚合物的合成开辟新途径。
