Fu Shuang, Su Xiang, Li Meng, Song Shanliang, Wang Lei, Wang Dong, Tang Ben Zhong
Centre for AIE Research Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials College of Material Science and Engineering Shenzhen University Shenzhen 518061 P. R. China.
College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China.
Adv Sci (Weinh). 2020 Sep 23;7(20):2001909. doi: 10.1002/advs.202001909. eCollection 2020 Oct.
Controllable construction of diversiform topological morphologies through supramolecular self-assembly on the basis of single building block is of vital importance, but still remains a big challenge. Herein, a bola-type supra-amphiphile, namely DAdDMA@2-CD, is rationally designed and successfully prepared by typical host-guest binding -cyclodextrin units with an aggregation-induced emission (AIE)-active scaffold DAdDMA. Self-assembling investigation reveals that several morphologies of self-assembled DAdDMA@2-CD including leaf-like lamellar structure, nanoribbons, vesicles, nanofibers, helical nanofibers, and toroids, can be straightforwardly fabricated by simply manipulating the self-assembling solvent proportioning and/or temperature. To the best of knowledge, this presented protocol probably holds the most types of self-assembling morphology alterations using a single entity. Moreover, the developed leaf-like lamellar structure performs well in mimicking the light-harvesting antenna system by incorporating with a Förster resonance energy transfer acceptor, providing up to 94.2% of energy transfer efficiency.
基于单一结构单元通过超分子自组装可控构建多样的拓扑形态至关重要，但仍然是一个巨大的挑战。在此，一种bola型超两亲分子，即DAdDMA@2-CD，通过典型的主客体结合 -环糊精单元与具有聚集诱导发光（AIE）活性的支架DAdDMA被合理设计并成功制备。自组装研究表明，通过简单地控制自组装溶剂比例和/或温度，可以直接制备出自组装DAdDMA@2-CD的几种形态，包括叶状层状结构、纳米带、囊泡、纳米纤维、螺旋纳米纤维和环面。据了解，该方案可能是使用单一实体实现自组装形态变化类型最多的。此外，所开发的叶状层状结构通过与福斯特共振能量转移受体结合，在模拟光捕获天线系统方面表现出色，提供高达94.2%的能量转移效率。
