Fujimoto Takuya, Matsushita Michio M, Yoshikawa Hirofumi, Awaga Kunio
Department of Chemistry and Research Center for Materials Science, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan.
J Am Chem Soc. 2008 Nov 26;130(47):15790-1. doi: 10.1021/ja8072066.
We studied the electrochemistry of the thin films of octathio[8]circulene (1) in an ionic liquid, N,N-diethyl-N-methyl(2-methoxyethyl) ammonium bis(trifluoromethylsulfonyl)imide (DEME-TFSI). The compound 1 exhibited simultaneous two-electron oxidation in the oxidation scan and then stepwise reductions to the original neutral state, showing significant electrochromism. This color change was well-interpreted in terms of the n-pi transition that is allowed by the vacancy in the HOMO of 1 after electrochemical oxidation.
我们研究了八硫代[8]环芳（1）在离子液体N，N - 二乙基 - N - 甲基（2 - 甲氧基乙基）铵双（三氟甲基磺酰）亚胺（DEME - TFSI）中的薄膜电化学。化合物1在氧化扫描中表现出同时的双电子氧化，然后逐步还原至原始中性状态，呈现出显著的电致变色现象。这种颜色变化可以通过电化学氧化后1的最高占据分子轨道（HOMO）中的空位所允许的n - π跃迁得到很好的解释。
