Zhang Hongli, Cheng Junjie, Zhou Qiang, Zhang Qijin, Zou Gang
CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
Soft Matter. 2020 Jun 10;16(22):5203-5209. doi: 10.1039/d0sm00152j.
Discotic π-conjugated supramolecular assemblies, especially with chiral supramolecular nanostructures, have been attracting growing research interest due to their significant optoelectronic properties and the possibilities of their applications in the new generation of organic semiconductors. However, the impact of supramolecular chirality on their mechanical and electrical performances remains poorly understood. Herein, a series of optically active supramolecular gels were formed from achiral triphenylene derivatives by introducing limonene as the chiral source. Owing to the well-ordered supramolecular packing, the homochiral supramolecular gels exhibited greater mechanical strength and higher conductivity, compared to heterochiral architectures. The impact of supramolecular packing in homochiral or heterochiral assemblies on their resulting mechanical and electrical performances was investigated in detail, which might be of great fundamental value for the rational design of chiral π-conjugated supramolecular nanostructures for applications in chiral optoelectronics.
盘状π共轭超分子组装体，尤其是具有手性超分子纳米结构的组装体，因其显著的光电特性以及在新一代有机半导体中的应用潜力，正吸引着越来越多的研究兴趣。然而，超分子手性对其机械和电学性能的影响仍知之甚少。在此，通过引入柠檬烯作为手性源，由非手性三亚苯衍生物形成了一系列光学活性超分子凝胶。由于超分子排列有序，与杂手性结构相比，同手性超分子凝胶表现出更高的机械强度和电导率。详细研究了同手性或杂手性组装体中分子超分子排列对其机械和电学性能的影响，这对于合理设计用于手性光电子学的手性π共轭超分子纳米结构可能具有重要的基础价值。
