Effect of grafting density on the self-assembly of side-chain discotic liquid crystalline polymers with triphenylene discogens
Effect of grafting density on the self-assembly of side-chain discotic liquid crystalline polymers with triphenylene discogens
复制标题
接枝密度对苯并菲盘状侧链盘状液晶聚合物自组装的影响
DOI：
10.1039/c9sm02097g
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发表时间：
2020
期刊：
影响因子：
3.4
通讯作者：
Chen Dongzhong
中科院分区：
文献类型：
--
作者：
Wu Mei;Gong Minqing;Zhou Dongshan;Wang Rong;Chen Dongzhong
采用耗散粒子动力学（DPD）方法研究了不同接枝密度的苯并菲（TP）侧链分散液晶聚合物（SDLCP）的自组装行为。我们探讨了主链和侧链TP discogens与不同长度的烷基尾巴之间的耦合效应，以及主链的刚性，接枝密度和间隔基长度如何影响SDLCP的自组装形态。通过改变上述因素，我们得到了九个阶段。研究表明，适当的接枝密度、足够长的聚合物主链和中等长度的烷基尾链是SDLCP形成有序柱状中间相的保证。值得注意的是，获得了具有高接枝密度和足够长主链的双柱状相（Colne-Col和Colh-Col）。这些结果为从接枝密度的角度深入研究SDLCP这类迷人的有机半导体材料提供了有效的依据和有益的指导。
The self-assembly of triphenylene (TP)-based side-chain discotic liquid crystalline polymers (SDLCPs) with different grafting densities was investigated by using the dissipative particle dynamics (DPD) method. We explored the coupling effect between the main chain and the side-chain TP discogens with various length alkyl tails, and how the rigidity of the main chain, grafting density and spacer lengths affect the self-assembled morphologies of SDLCPs. By changing the above factors, we have obtained nine phases. It is deduced that a moderate grafting density, a polymer backbone with sufficient length and alkyl tails with medium length ensure SDLCPs form ordered columnar mesophases. It is worth noting that double columnar phases (Colne-Col and Colh-Col) were obtained with high grafting densities and sufficiently long backbones. All these results provide an effective basis and helpful guidance for the in-depth research of such kinds of fascinating organic semiconducting materials, SDLCPs, from the perspective of grafting density.