Tailor-Made Pore Surface Engineering in Covalent Organic Frameworks: Systematic Functionalization for Performance Screening
Tailor-Made Pore Surface Engineering in Covalent Organic Frameworks: Systematic Functionalization for Performance Screening
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DOI：
10.1021/jacs.5b04300
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发表时间：
2015-06-10
影响因子：
15
通讯作者：
Jiang, Donglin
中科院分区：
文献类型：
--
作者：
Huang, Ning;Krishna, Rajamani;Jiang, Donglin
合成了亚胺连接的共价有机框架（COF），在一维孔壁上具有含量可调、可接近且具有反应性的乙炔基。这些COF为孔壁表面工程提供了一个理想的平台，旨在锚定从疏水性到亲水性单元、从碱性到酸性部分的各种官能团，并具有可控的负载量。这种方法能够开发各种定制的COF，这些COF具有系统调整的孔隙率和功能，同时保留结晶度。我们证明该策略可用于有效筛选适合用作二氧化碳吸附剂的孔隙结构。孔表面工程壁对 CO2 具有增强的亲和力，从而使 COF 能够高性能地捕获和分离 CO2。
Imine-linked covalent organic frameworks (COFs) were synthesized to bear content-tunable, accessible, and reactive ethynyl groups on the walls of one-dimensional pores. These COFs offer an ideal platform for pore-wall surface engineering aimed at anchoring diverse functional groups ranging from hydrophobic to hydrophilic units and from basic to acidic moieties with controllable loading contents. This approach enables the development of various tailor-made COFs with systematically tuned porosities and functionalities while retaining the crystallinity. We demonstrate that this strategy can be used to efficiently screen for suitable pore structures for use as CO2 adsorbents. The pore-surface-engineered walls exhibit an enhanced affinity for CO2, resulting in COFs that can capture and separate CO2 with high performance.