Synthesis and Properties of Fused Extended Tetrathiafulvalene Donors with Dithienylmethylene Spacer and Application to Organic Rechargeable Batteries
作者:Tomokazu Yamauchi、Takashi Kubo、Atsushi Fujioka、Aya Yoshimura、Takashi Shirahata、Hisakazu Miyamoto、Masaru Yao、Yohji Misaki
DOI:10.1246/bcsj.20210115
日期:2021.7.15
Several derivatives of 1,3-dithiole[3]dendralene derivatives with two thiophene spacers (2) were synthesized. The results of an X-ray structure analysis of an analog without fused TTF units and a DFT calculation of the unsubstituted-2 (2Aa) suggested that 2Aa had a structure with significantly distorted between the central 1,3-dithiole (DT) ring and one of the thiophene rings. Cyclic voltammograms
合成了具有两个噻吩间隔基 ( 2 )的 1,3-二硫醇 [3] 枝烯衍生物的几种衍生物。没有融合 TTF 单元的类似物的 X 射线结构分析结果和未取代的2 ( 2Aa )的 DFT 计算表明2Aa的结构在中心 1,3-二硫醇 (DT) 环和噻吩环之一。四(正己基硫烷基)衍生物(2Be和2Ce)的循环伏安图)由一对双电子氧化还原波和五对单电子氧化还原波组成,对应于七个氧化还原活性 DT 环的存在。四(甲硫基)或双(乙二硫基)衍生物(2Bc或2Bd)作为锂离子电池的正极材料,2Bc /Li和2Bd /Li电池的首次放电容量为133-138 mAh g - 1 .