基于葫芦[7]脲外表面相互作用的4-磺基杯[4]芳烃/葫芦[7]脲超分子组装体
4-Sulfocalix[4]arene/Cucurbit[7]uril-Based Supramolecular Assemblies through the Outer Surface Interactions of Cucurbit[]uril.
作者信息
Tian Xiao, Chen Li Xia, Yao Yu Qing, Chen Kai, Chen Min-Dong, Zeng Xi, Tao Zhu
机构信息
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China.
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, People's Republic of China.
出版信息
ACS Omega. 2018 Jun 20;3(6):6665-6672. doi: 10.1021/acsomega.8b00829. eCollection 2018 Jun 30.
Upon mixing of aqueous solutions of the freely soluble building blocks cucurbit[7]uril (Q[7]) and 4-sulfocalix[4]arene (SC[4]A), white microcrystals instantly separate in near-quantitative yield. The driving force for this assembly is suggested to be the outer-surface interaction of the Q[]. Dynamic light scattering, scanning electron microscopy, and NMR (diffusion-ordered NMR spectroscopy) analyses have confirmed the supramolecular aggregation of Q[7] and SC[4]A. Titration H NMR spectroscopy and isothermal titration calorimetry have shown that the interaction ratio of Q[7] and SC[4]A is close to 3:1. Moreover, the Q[7]/SC[4]A-based supramolecular assembly can accommodate molecules of some volatile compounds or luminescent dyes. Thus, this work offers a simple and highly efficient means of preparing adsorbent or solid fluorescent materials.
将可自由溶解的构筑单元葫芦[7]脲（Q[7]）和4-磺酸杯[4]芳烃（SC[4]A）的水溶液混合后，白色微晶会立即以近定量的产率析出。这种组装的驱动力被认为是Q[]的外表面相互作用。动态光散射、扫描电子显微镜和核磁共振（扩散排序核磁共振光谱）分析证实了Q[7]和SC[4]A的超分子聚集。滴定1H核磁共振光谱和等温滴定量热法表明，Q[7]和SC[4]A的相互作用比接近3:1。此外，基于Q[7]/SC[4]A的超分子组装体可以容纳一些挥发性化合物或发光染料的分子。因此，这项工作提供了一种制备吸附剂或固体荧光材料的简单且高效的方法。
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