1-step multi-electron transfer redox active molecules based on theπ-conjugated and branched structure

为了实现一步多电子转移分子，我合成了一系列的四苯乙烯衍生物。结果表明，1，2-二(4-甲氧基苯基)-1，2-二(4-二甲氨基苯基)-乙烯(MAE)的结构具有稳定性好的一步两电子转移电化学反应的充要条件。为了开发器件，我们研究了两种含有MAE单元的聚合物：(1)含-共轭单元的聚合物(2)含烷基的聚合物。在(1)的情况下，由于MAE单元之间通过共轭单元的强烈相互作用，多电子转移分多步进行。在(2)的情况下，齐聚物和聚合物表现出一步两电子转移氧化还原波。用能斯特方程估算了二聚体和修剪体的电子转移数分别为2.1和2.2。含有一步多电子转移单元如MAE的聚合物的主链应该是烷烃，因为通过烷基链单元之间的相互作用很小。

In order to realize the 1-step multi-electron transfer molecules, I synthesized a series of tetraphenylethene derivatives. It reveals that the structure of 1, 2-bis(4-methoxyphenyl) 1, 2-bis(4-dimethylaminophenyl)-ethene(MAE) possesses a necessary and sufficient condition for 1-step two-electron transfer electrochemical reaction with good stability. For developing devices, two kinds of polymers which have MAE units are investigated as follows.(1) with.-conjugated unit(2) with alkyl chain. In the case of(1), multi-electron transfers took place in multi steps because the strong interaction between MAE units via.-conjugated unit. In the case of(2), the oligomers and polymers show a kind of 1-step 2-electron transfer redox wave. The electron transfer numbers of the dimer and the trimmer are estimated to be 2. 1 and 2. 2, respectively, using Nernst equation. The main chain of the polymer which contains the 1-step multi-electron transfer unit such as MAE should be by alkane because of the low interaction between units via alkyl chain.