Please use this identifier to cite or link to this item: https://doi.org/10.1002/anie.201801998
Title: Toward Two-Dimensional pi-Conjugated Covalent Organic Radical Frameworks
Authors: Wu, Shaofei
Li, Minchan
Phan, Hoa 
Wang, Dingguan
Herng, Tun Seng 
Ding, Jun 
Lu, Zhouguang
Wu, Jishan 
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
covalent organic frameworks
materials science
oxygen reduction reaction
radicals
structure elucidation
CRYSTALLINE
GRAPHDIYNE
REDUCTION
GRAPHENE
DESIGN
Issue Date: 2-Jul-2018
Publisher: Wiley
Citation: Wu, Shaofei, Li, Minchan, Phan, Hoa, Wang, Dingguan, Herng, Tun Seng, Ding, Jun, Lu, Zhouguang, Wu, Jishan (2018-07-02). Toward Two-Dimensional pi-Conjugated Covalent Organic Radical Frameworks. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57 (27) : 8007-8011. ScholarBank@NUS Repository. https://doi.org/10.1002/anie.201801998
Abstract: © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 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.
Source Title: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
URI: https://scholarbank.nus.edu.sg/handle/10635/167668
ISSN: 1433-7851
1521-3773
DOI: 10.1002/anie.201801998
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