Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST) Ministry of Education, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
Frontiers Science Centre for Transformative Molecules Shanghai Key Laboratory of Electrical Insulation and Thermal Aging School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China.
Chempluschem. 2020 May;85(5):906-909. doi: 10.1002/cplu.202000143.
An amphiphilic organic cage was synthesized and used as self-assembly synthon for the fabrication of novel functional supramolecular structures in solution. The transmission electron microscopy (TEM) results showed that this amphiphilic cage self-assembled in aqueous solution into unilamellar nanotubes with a diameter of 29±4 nm at a concentration of 0.05 mg mL . Interestingly, the self-assembly of this cage significantly enhanced the anion-π interactions as indicated by a remarkable increasement of association constant (K ) between Cl and this amphiphilic cage after self-assembly. In specific, K was increased from 223 M for discrete cages in methanol to 6800 M for aggregated cages after self-assembly in water at the same concentration of 2.26×10 M. A mechanism based on a synergistic effect was proposed in order to explain this self-assembly process through enhanced anion-π interactions.
一种两亲性有机笼被合成，并用作自组装单体，用于在溶液中制造新型功能超分子结构。透射电子显微镜（TEM）结果表明，这种两亲性笼在水溶液中自组装成直径为 29±4nm 的单壁纳米管，浓度为 0.05mg/mL。有趣的是，自组装显著增强了阴离子-π相互作用，这表明自组装后 Cl 与这种两亲性笼之间的结合常数（K）显著增加。具体而言，在相同浓度为 2.26×10-5M 的甲醇中离散笼的 K 值为 223M，而在自组装为水相后，K 值增加到 6800M。提出了一种基于协同效应的机制来解释通过增强阴离子-π相互作用的自组装过程。
