Precise Fabrication of Robust Conjugated Microporous Polymer Membranes via Oxidative Molecular Layer Deposition for Efficient Organic Solvent Nanofiltration,Chemistry of Materials

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Precise Fabrication of Robust Conjugated Microporous Polymer Membranes via Oxidative Molecular Layer Deposition for Efficient Organic Solvent Nanofiltration
Chemistry of Materials ( IF 7.2 ) Pub Date : 2024-07-06 , DOI: 10.1021/acs.chemmater.4c01424
Kai Mi ₁ , Sen Xiong ₁ , Yanqiu Lu ₂ , Yong Wang _{1,

2}

Affiliation

Conjugated microporous polymers (CMPs) are a novel class of microporous materials highly regarded as exceptional building blocks for the fabrication of high-performance organic solvent nanofiltration membranes. However, preparing CMP thin films remains a challenge, primarily due to the formation of insoluble powders via traditional solvothermal synthesis. Here, we introduce the innovative oxidative molecular layer deposition (oMLD) method for the fabrication of robust CMP membranes utilizing 3,3′-bithiophene (33DT) monomers. The oMLD method enables the direct fabrication of CMP thin films on substrates of varying shapes and allows precise control over membrane structure and separation performance by simply altering the deposition cycles. Benefiting from the abundant micropores and highly cross-linked structure, the resulting CMP membranes facilitate rapid solvent transport and present size-dependent solute–solute separations. In applications involving high-value separations, the P33DT membrane proves effective for pharmaceutical separation in organic solvents. To the best of our knowledge, this work represents the pioneering instance of fabricating CMP membranes via oMLD, significantly broadening the available preparation methods and potential separation applications for CMP membranes.

中文翻译：

通过氧化分子层沉积精确制造坚固的共轭微孔聚合物膜以实现高效的有机溶剂纳滤

共轭微孔聚合物（CMP）是一类新型微孔材料，被高度认为是制造高性能有机溶剂纳滤膜的特殊构件。然而，制备 CMP 薄膜仍然是一个挑战，主要是由于传统的溶剂热合成会形成不溶性粉末。在这里，我们介绍了创新的氧化分子层沉积 (oMLD) 方法，用于利用 3,3'-联噻吩 (33DT) 单体制造坚固的 CMP 膜。 oMLD 方法能够在不同形状的基底上直接制造 CMP 薄膜，并通过简单地改变沉积周期来精确控制膜结构和分离性能。受益于丰富的微孔和高度交联的结构，所得的 CMP 膜有利于快速溶剂传输并实现尺寸依赖性的溶质-溶质分离。在涉及高价值分离的应用中，P33DT 膜被证明可有效用于有机溶剂中的药物分离。据我们所知，这项工作代表了通过 oMLD 制造 CMP 膜的开创性实例，显着拓宽了 CMP 膜的可用制备方法和潜在的分离应用。

更新日期：2024-07-06

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