Ion-Based Materials Derived from Positively and Negatively Charged Chloride Complexes of π-Conjugated Molecules
Ion-Based Materials Derived from Positively and Negatively Charged Chloride Complexes of π-Conjugated Molecules
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DOI：
10.1021/ja4071333
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发表时间：
2013-10-02
影响因子：
15
通讯作者：
Maeda, Hiromitsu
中科院分区：
文献类型：
--
作者：
Dong, Bin;Sakurai, Tsuneaki;Maeda, Hiromitsu
通过使用双阳离子和电子中性π-共轭受体将具有相似几何形状的带正电荷和带负电荷的受体阴离子络合物组合来制备来自平面带电物种的定向盐。苯-或嘧啶-桥接的双（咪唑）双阳离子受体形成单阳离子受体-Cl-复合物，伴随着一个自由的Cl-。这种游离的Cl-随后被基于吡咯的中性阴离子受体捕获，形成带负电荷的受体-Cl-复合物。由此产生的正电荷和负电荷的平面受体-Cl-复合物的离子对可以产生超分子辛烷凝胶，在其干凝胶状态下采用层状自组织结构。另一方面，固态离子对具有六方柱状中间相，其通过带正电荷和负电荷的平面受体-Cl-复合物交替堆叠而形成。利用闪光光解时间分辨微波电导技术，测定了新制备的固态离子对的一维载流子输运特性，其迁移率为0.05 cm（2）V-1 s（-1）。
Oriented salts from planar charged species were prepared by combining positively and negatively charged receptor anion complexes with similar geometries using dicationic and electronically neutral pi-conjugated receptors. Phenylene- or pyrimidine-bridged bis(imidazolium) dicationic anion receptors formed monocationic receptor-Cl- complexes that were accompanied by a free Cl-. This free Cl- was subsequently captured by pyrrole-based neutral anion receptors to form negatively charged receptor-Cl- complexes. The ion pair of the resulting positively and negatively charged planar receptor-Cl- complexes could produce a supramolecular octane gel, adopting a lamellar self organized structure in its xerogel state. On the other hand, the solid-state ion pairs had hexagonal columnar mesophases, which formed via alternate stacking of the positively and negatively charged planar receptor-Cl- complexes. By use of the flash-photolysis time-resolved microwave conductivity technique, the one-dimensional charge-carrier transporting property, with a mobility of 0.05 cm(2) V-1 s(-1), was determined for the newly prepared solid-state ion pairs.