两个双(米-亚苯基)-32冠10含有两个吡啶基或羧基衍生物制备。它们被用来制备三种双(米-亚苯基)的-32冠10基于离散菱形协调驱动的以高产率自组装。这些基于冠醚的菱形的形成已通过NMR,UV-vis,CSI-TOF-MS和元素分析得到了证实。研究了这些基于冠醚的组装体与百草枯(N,N'-二甲基-4,4'-联吡啶鎓)的络合作用。发现中性双(皇冠醚)菱形1与百草枯的络合物具有1:2的化学计量比。菱形复合物的平均表观缔合常数K av丙酮中的百草枯1约为8.8(±0.8)×10 3 M -1,比相应的简单bis(m-亚苯基)-32-crown-10与百草枯。这可能是因为羧酸酯基团在宿主和客体之间提供了额外的非共价相互作用。当通过NMR,UV-vis和CSI-TOF-MS分析进行研究时,在阳离子菱形和百草枯之间未观察到明显的络合。这可能归因于阳离子吡啶鎓环与阳离子铂原子之间的电荷排斥以及由于阳离子
Two bis(m-phenylene)-32-crown-10derivatives containing two pyridyl or carboxyl groups were made. They were used to prepare three bis(m-phenylene)-32-crown-10-based discrete rhomboids by coordination-driven self-assembly with high yields. The formation of these crown ether-based rhomboids was confirmed by NMR, UV−vis, CSI-TOF-MS, and elemental analysis. The complexation of these crown ether-based assemblies
两个双(米-亚苯基)-32冠10含有两个吡啶基或羧基衍生物制备。它们被用来制备三种双(米-亚苯基)的-32冠10基于离散菱形协调驱动的以高产率自组装。这些基于冠醚的菱形的形成已通过NMR,UV-vis,CSI-TOF-MS和元素分析得到了证实。研究了这些基于冠醚的组装体与百草枯(N,N'-二甲基-4,4'-联吡啶鎓)的络合作用。发现中性双(皇冠醚)菱形1与百草枯的络合物具有1:2的化学计量比。菱形复合物的平均表观缔合常数K av丙酮中的百草枯1约为8.8(±0.8)×10 3 M -1,比相应的简单bis(m-亚苯基)-32-crown-10与百草枯。这可能是因为羧酸酯基团在宿主和客体之间提供了额外的非共价相互作用。当通过NMR,UV-vis和CSI-TOF-MS分析进行研究时,在阳离子菱形和百草枯之间未观察到明显的络合。这可能归因于阳离子吡啶鎓环与阳离子铂原子之间的电荷排斥以及由于阳离子
Supramolecular Micelles Constructed by Crown Ether-Based Molecular Recognition
A novel supramolecular amphiphilic polymer constructed by crown ether-based molecularrecognition has been fabricated and demonstrated to self-assemble into core–shell supramolecular micelles in water. The reversible transition between assembled and disassembled structures can be achieved by changing the pH. This transition was used to realize the controlled release of small molecules. The supramolecular