Department of Applied Chemistry, Faculty of Engineering, Aichi Institute of Technology, Yachigusa 1247, Yakusa, Toyota, Aichi 470-0392, Japan.
Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka-shi, Fukuoka 819-0395, Japan.
Int J Mol Sci. 2020 Jul 2;21(13):4723. doi: 10.3390/ijms21134723.
A three-fold symmetric trioxotriangulene derivative with three pyridyl groups as coordinating sites was designed and synthesized. In a cyclic voltammetry measurement, the trioxotriangulene skeleton exhibited a multi-stage redox ability from neutral radical to radical tetra-anion species. In the zinc complex of monoanion species, three pyridyl groups coordinated to the zinc ion to build up a two-dimensional coordination network with a cavity larger than 12 Å in diameter. This complex was utilized as a cathode active material of a lithium ion battery, and it exhibited a capacity of ca. 60 mAh g per the weight of the active material with a stable cycling performance up to 1000 cycles. This work shows that the coordination network formed by the trioxotriangulene-based ligand was effective in the improvement of cycle performance of the organic rechargeable battery.
设计并合成了一种具有三个吡啶基作为配位位点的三倍对称三氧三嗪衍生物。在循环伏安测量中，三氧三嗪骨架表现出从中性自由基到自由基四阴离子的多步氧化还原能力。在单价阴离子物种的锌配合物中，三个吡啶基与锌离子配位，构建了一个具有大于 12 Å 直径空腔的二维配位网络。该配合物被用作锂离子电池的阴极活性材料，其活性物质的重量约为 60 mAh g，具有稳定的循环性能，可达 1000 次循环。这项工作表明，基于三氧三嗪的配体形成的配位网络在改善有机可充电电池的循环性能方面是有效的。
