Hierarchical Self-Assembly of Disc-Rod Shape Amphiphiles Having Hexa-peri-hexabenzocoronene and a Relatively Long Rod
Hierarchical Self-Assembly of Disc-Rod Shape Amphiphiles Having Hexa-peri-hexabenzocoronene and a Relatively Long Rod
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六邻六苯并苯并具有较长棒的盘棒状两亲物的分级自组装
DOI：
10.1021/acs.langmuir.7b00456
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发表时间：
2017
期刊：
影响因子：
3.9
通讯作者：
Fan Xinghe
中科院分区：
文献类型：
--
作者：
Gu Kehua;Zhang Mengyao;Zhou Yu;Han Mengying;Zhang Wei;Shen Zhihao;Fan Xinghe
设计并合成了两种由六-正-六苯并蔻（HBC）和一种纳米棒状液晶元组成的盘-棒两亲分子。热致相行为进行了仔细的研究。尽管盘和棒之间存在显著的空间不匹配，但在环境温度和加热时观察到盘-棒形状两亲物的分级结构。通过重构电子密度图、分子动力学模拟和透射电子显微镜直接观察，提出并证实了分子堆积方案。结果表明，形状效应在形状两亲分子的自组装过程中起着重要的作用。
Two disc-rod shape amphiphiles consisting of hexa-peri-hexabenzocoronene (HBC) and a nanosized rodlike mesogen were designed and synthesized. Thermotropic phase behaviors were carefully studied. Despite significant steric mismatch between the discs and rods, hierarchical structures were observed for both disc-rod shape amphiphiles at ambient temperature and upon heating. Molecular packing schemes were proposed and confirmed using the reconstructed electron density maps, molecular dynamics simulation, and direct observation using transmission electron microscope. The results demonstrate that the shape effect is of great importance in the self-assembly of shape amphiphiles.