https://scholars.lib.ntu.edu.tw/handle/123456789/606912
標題: | Reversible Electroactive Behavior in a Zn-Based Metal-Organic Framework via Mild Oxidation Potential | 作者: | Ngue C.-M Liu Y.-H Leung M.-K Lu K.-L. MAN-KIT LEUNG |
關鍵字: | Electron transport properties;Free radical reactions;Ligands;Metal ions;Metal-Organic Frameworks;Organic polymers;Organometallics;Redox reactions;Charge propagation;Electroactive behavior;Electron transfer;Modular packings;Optical switching;Square grid networks;Steric protection;Synthesis and characterizations;Metals | 公開日期: | 2021 | 卷: | 60 | 期: | 15 | 起(迄)頁: | 11458-11465 | 來源出版物: | Inorganic Chemistry | 摘要: | This work describes the synthesis and characterization of a Zn-based metal-organic framework, [Zn2(TTPA)(SDB)2·(DMF)(H2O)]n (1, TTPA = tris(4-(1H-1,2,4-triazol-1-yl)phenyl)amine, SDB = 4,4′-sulfonyldibenzoate). A newly designed strategy with a redox-active linker, TTPA, and mediated by a V-shaped carboxylic linker with Zn2+ metal ions resulted in an electroactive framework. The V-shaped carboxylic linker with Zn2+ metal ions forms linear struts interlinked by two of the side-arms of the TTPA ligands to form a square grid network. The interior of the grid is enough to accommodate the third side-arm of the TTPA ligands, acting as a confinement grid that provides steric protection when triarylamine radical cations were generated. In addition, modular packing of axially aligned TTPA ligand facilitates charge propagation. Optical switching studies confirmed that 1 is electrochemically reversible up to 48 cycles at a potential of 0.9 V vs Fc/Fc+. Framework 1 remained robust after annealing at 180 °C for 20 h as corroborated by the PXRD. These studies confirm the importance of crystal engineering design, where electron transfer is possible in a two-ligand approach. ? 2021 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112362798&doi=10.1021%2facs.inorgchem.1c01466&partnerID=40&md5=16c0a7743355302ec6bff606140e67f3 https://scholars.lib.ntu.edu.tw/handle/123456789/606912 |
ISSN: | 00201669 | DOI: | 10.1021/acs.inorgchem.1c01466 |
顯示於: | 化學系 |
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