Toward Two-Dimensional π-Conjugated Covalent Organic Radical Frameworks

Angewandte Chemie
Shaofei WuJishan Wu

Abstract

Reported is the synthesis, characterization, and material properties of the first π-conjugated two-dimensional covalent organic radical framework (CORF), PTM-CORF, based on the stable polychlorotriphenylmethyl (PTM) radical. The covalent organic framework (COF) precursor (PTM-H-COF) was first synthesized by liquid/liquid interfacial acetylenic homocoupling of a triethynylpolychlorotriphenylmethane monomer, and showed crystalline features with a hexagonal diffraction pattern matching that of A-B-C stacking. Subsequent deprotonation and oxidation of the PTM units in PTM-H-COF gave PTM-CORF. Magnetic measurements revealed that the neighboring PTM radicals in the PTM-CORF are anti-ferromagnetically coupled each other, with a moderate exchange interaction (J=-375 cm-1 ). The PTM-CORF has a small energy gap (ca. 0.88 eV) and a low-lying LUMO energy level (-4.72 eV), and exhibits high electrocatalytic activity and durability toward the oxygen reduction reaction.

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Citations

Feb 21, 2019·Angewandte Chemie·Rui FengXinping Wang
Jun 22, 2019·Advanced Materials·Ryota SakamotoHiroshi Nishihara
Jul 28, 2019·Angewandte Chemie·Liang ZhangHexiang Deng
Feb 20, 2020·Chemical Communications : Chem Comm·Zhaohui ZhangYingjie Zhao
May 6, 2020·Chemical Society Reviews·Jie LiBo Wang
Apr 22, 2021·Chemical Society Reviews·Xiaojia ZhaoArne Thomas
Jun 25, 2021·Chemical Science·Andreas SchneemannStefan Kaskel
Nov 23, 2018·ACS Applied Materials & Interfaces·Qiuju ZhangXiao Cheng Zeng
May 20, 2020·Journal of the American Chemical Society·Hongde Yu, Dong Wang
Mar 1, 2019·ACS Applied Materials & Interfaces·H Vignesh BabuM Rajeswara Rao
Jan 18, 2020·Journal of the American Chemical Society·Vellanki LakshmiDmitrii F Perepichka
Jul 22, 2020·Chemical Reviews·Mark D AllendorfVitalie Stavila
Jan 23, 2020·Chemical Reviews·Keyu GengDonglin Jiang
Nov 6, 2018·ACS Nano·Shantanu MishraRoman Fasel
Nov 12, 2021·The Journal of Physical Chemistry Letters·Isaac AlcónMads Brandbyge
Jan 7, 2022·Chemical Society Reviews·Dong-Hui YangBao-Hang Han

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