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Construction of highly-stable covalent organic framework with combined enol-imine and keto-enamine linkages.

ABSTRACT: A novel covalent organic framework (COF) (Tp-BI-COF) with combined ketimine-type enol-imine and keto-enamine linkages was prepared through a cascade of ketimine condensation followed by aldimine condensation and characterized by XRD, solid state ¹³C NMR, IR, TGA and BET. Tp-BI-COF showed high stability toward acid, organic solvent, and boiling water. The 2D COF exhibited photochromic properties after being irradiated with a xenon lamp. The stable COF, with aligned one-dimensional nanochannels, provided nitrogen sites on pore walls, which confine and stabilize the H₃PO₄ in the channel via hydrogen-bonding interactions. After loading with H₃PO₄, the material showed excellent anhydrous proton conductivity.

SUBMITTER: Jiang J

PROVIDER: S-EPMC10184012 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature

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Construction of highly-stable covalent organic framework with combined enol-imine and keto-enamine linkages.

Jiang Jian J He Kaiyu K Cai Xue X Yu Hong H Zuo Minghui M Yun Guan G Yun Tao T Ma Yue Y Zhang Zitong Z Liu Yunling Y Wang Zhenlu Z

RSC advances 20230515 22

A novel covalent organic framework (COF) (Tp-BI-COF) with combined ketimine-type enol-imine and keto-enamine linkages was prepared through a cascade of ketimine condensation followed by aldimine condensation and characterized by XRD, solid state <sup>13</sup>C NMR, IR, TGA and BET. Tp-BI-COF showed high stability toward acid, organic solvent, and boiling water. The 2D COF exhibited photochromic properties after being irradiated with a xenon lamp. The stable COF, with aligned one-dimensional nano ...[more]

PMID: 37197180

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