Interlocked compounds such as rotaxanes and catenanes exhibit unique kinetic properties in response to external chemical or physical stimuli and are therefore expected to be applied to molecular machines and molecular sensors. To develop a novel rotaxane for this application, an isophthalamide macrocycle and a neutral phenanthroline axle were used. Stable pseudorotaxanes are known to be formed using
轮烷和索烷等互锁化合物在响应外部化学或物理刺激时表现出独特的动力学特性,因此有望应用于分子机器和分子传感器。为了开发用于该应用的新型轮烷,使用了间苯二甲酰胺大环和中性菲咯啉轴。已知稳定的拟轮烷是通过氢键和 π-π 相互作用形成的。在本研究中,我们设计了一种非对称轴向分子并合成了[2]轮烷,目的是引入两个不同的站;菲咯啉和仲胺/铵单元。此外, 1 H NMR测量表明,所获得的轮烷在施加外部酸/碱刺激时充当分子开关。
Self-templated synthesis of amide catenanes and formation of a catenane coordination polymer
作者:James E. M. Lewis
DOI:10.1039/c9ob00107g
日期:——
isophthalamide [2]catenanes of various sizes in up to 51% yield without the need for metal ions as templates or mediators of covalent bond formation. Using this strategy a bis-monodentate catenane was prepared incorporating exohedral pyridine units. Upon complexation of this ligand with AgOTf a one-dimensional coordination polymer was obtained in the solid state in which both macrocycles of the catenane are involved
A ditopic macrocycle with a bisamide and a half dibenzo-crown ether component has been newly synthesized and its complexation behavior toward neutral phenanthroline derivatives is reported. The macrocycle can bind phenanthroline derivatives very strongly by hydrogen bonding and π-electron interaction, yielding pseudorotaxane structures. The inclusion complexes show a pH controllable reversible threading–dethreading molecular switching system.