作者:Motonori Watanabe、Naoki Uemura、Shintaro Ida、Hidehisa Hagiwara、Kenta Goto、Tatsumi Ishihara
DOI:10.1016/j.tet.2016.05.069
日期:2016.7
calculations. Propyl and butyl group substituted indigo was most soluble in chloroform and 1,2-dicrolobenzene, and these solubility were 65–89 times increased as compared to the parent indigo. DFT calculations suggested that the presence of the alkyl chains at the 5.5′-position increases the energy of the highest occupied molecular orbital, while reducing the energy of the lowest unoccupied molecular orbital
合成了一系列烷基化的靛蓝。通过NMR,质谱,吸收光谱,循环伏安法和密度泛函理论(DFT)计算来表征烷基化的靛蓝。丙基和丁基取代的靛蓝最易溶于氯仿和1,2-二氯苯,与母体靛蓝相比,这些溶解度增加了65–89倍。DFT计算表明,在5.5'-位的烷基链的存在增加了最高占据分子轨道的能量,同时降低了最低未占据分子轨道的能量。这一理论发现与实验结果非常吻合。通过X射线衍射获得的晶体结构显示一维pi-pi堆积。烷基化分子转化为隐色结构,然后将这些结构转换成电影状态的相应靛蓝。在TiO上沉积膜后2 / FTO基板,观察到氧化光电流。