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Construction of Porous Polyureas and Polyamides via Domino Polymerization and Their High-Efficiency Au(III) Adsorption
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-11-09 , DOI: 10.1002/marc.202200712 Yujie Lei 1 , Yunxia Xia 1 , Wangzhi Chen 1 , Bo Lin 1 , Tiesheng Li 2 , Lei Li 1
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-11-09 , DOI: 10.1002/marc.202200712 Yujie Lei 1 , Yunxia Xia 1 , Wangzhi Chen 1 , Bo Lin 1 , Tiesheng Li 2 , Lei Li 1
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The adoption of new synthesis strategy and monomers significantly promotes the construction of porous organic polymers (POPs) and their promising applications. A fabricating method of porous polyimides is developed via sequential imidization and cross-linking reaction among self-condensable building blocks, as reported in the authors' previous manuscript. Herein, porous polyureas (A-POPs) are prepared starting from 4-ethynylaniline and diisocyanate monomers, while porous polyamides (B-POPs) are synthesized from 4-ethynylbenzoic acid and diisocyanate monomers. It is found that decreasing the monomer content in solvent can effectively inhibit the premature phase separation and facilitate the evolution of integrated network. Eventually, a maximum surface area of 425 m2 g−1 is achieved for porous polyureas when the content of monomers is 10%. To the best knowledge, A-POPs are the porous polyureas with the highest surface areas reported up to now. The as-prepared porous polyurea (AN-POP) exhibits the maximum adsorption capacity of 1093.87 ± 5.23 mg g−1 and removal rate of 99.96% for Au(III), due to its high surface area and the coordination between the heteroatoms (N and O) in A-POPs and metal ions. Besides, the porous polyurea also exhibits excellent renewable efficiency and high selectivity to Au(III).
中文翻译：
通过多米诺聚合构建多孔聚脲和聚酰胺及其高效 Au(III) 吸附
采用新的合成策略和单体显着促进了多孔有机聚合物 (POP) 的构建及其有前途的应用。正如作者之前的手稿中所报道的那样，通过自缩结构单元之间的顺序亚胺化和交联反应开发了一种多孔聚酰亚胺的制造方法。在此，多孔聚脲 (A-POP) 由 4-乙炔基苯胺和二异氰酸酯单体制备，而多孔聚酰胺 (B-POP) 由 4-乙炔基苯甲酸和二异氰酸酯单体合成。发现降低溶剂中的单体含量可以有效抑制过早的相分离并促进集成网络的演变。最终，最大表面积为 425 m 2 g −1当单体含量为 10% 时，多孔聚脲可实现。据了解，A-POP 是迄今为止报道的表面积最高的多孔聚脲。所制备的多孔聚脲 (AN-POP)由于其高表面积和杂原子之间的配位 (N和 O) 在 A-POPs 和金属离子中。此外，多孔聚脲还表现出优异的再生效率和对Au(III)的高选择性。
更新日期：2022-11-09
中文翻译：
通过多米诺聚合构建多孔聚脲和聚酰胺及其高效 Au(III) 吸附
采用新的合成策略和单体显着促进了多孔有机聚合物 (POP) 的构建及其有前途的应用。正如作者之前的手稿中所报道的那样，通过自缩结构单元之间的顺序亚胺化和交联反应开发了一种多孔聚酰亚胺的制造方法。在此，多孔聚脲 (A-POP) 由 4-乙炔基苯胺和二异氰酸酯单体制备，而多孔聚酰胺 (B-POP) 由 4-乙炔基苯甲酸和二异氰酸酯单体合成。发现降低溶剂中的单体含量可以有效抑制过早的相分离并促进集成网络的演变。最终，最大表面积为 425 m 2 g −1当单体含量为 10% 时，多孔聚脲可实现。据了解，A-POP 是迄今为止报道的表面积最高的多孔聚脲。所制备的多孔聚脲 (AN-POP)由于其高表面积和杂原子之间的配位 (N和 O) 在 A-POPs 和金属离子中。此外，多孔聚脲还表现出优异的再生效率和对Au(III)的高选择性。
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