四苯乙烯
超分子化学
部分
荧光
连接器
支柱
超分子聚合物
烷氧基
分子
烷基
聚合物
化学
材料科学
超分子组装
高分子化学
立体化学
有机化学
聚集诱导发射
工程类
物理
结构工程
量子力学
操作系统
计算机科学
作者
Kaiya Wang,Rongbo Zhang,Zejing Song,Kaituo Zhang,Xueqi Tian,Srikala Pangannaya,Minzan Zuo,Xiao‐Yu Hu
标识
DOI:10.1002/advs.202206897
摘要
A dimeric fluorescent macrocycle m-TPE Di-EtP5 (meso-tetraphenylethylene dimeric ethoxypillar[5]arene) is synthesized based on the meso-functionalized ethoxy pillar[5]arene. Through the connectivity of two pillar[5]arenes by CC double bond, the central tetraphenylethylene (TPE) moiety is simultaneously formed. The resultant bicyclic molecule not only retains the host-guest properties of pillararenes but also introduces the interesting aggregation-induced emission properties inherent in the embedded TPE structure. Three dinitrile derivatives with various linkers are designed as guests (G1, G2, and G3) to form host-guest assemblies with m-TPE Di-EtP5. The morphological control and fluorescence properties of the assemblies are successfully realized. G1 with a shorter alkyl chain as the linker completely threads into the cavities of the host. G2, due to its longer chain length, forms a linear supramolecular polymer upon binding to m-TPE Di-EtP5. G3 differs from G2 by possessing a bulky phenyl group in the middle of the chain, which can be further assembled with m-TPE Di-EtP5 to form supramolecular layered polymer and precipitated out in solution, and can be efficiently applied to photocatalytic reactions.
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