Absorption properties of an inverted cucurbit[7]uril-based porous coordination polymer induced by [ZnCl4]2 − anions

Coordination of an inverted cucurbit[7]uril (iQ[7]) with a series of alkali cations (A+), revealed that iQ[7] can interact with potassium to form iQ[7]-K+-based porous coordination polymer in the presence of [ZnCl4]2 − anions as a structure directing agent. Unexpectedly, isothermal titration calorimetry revealed no obvious interaction of iQ[7] with any A+ cation. Moreover, the iQ[7]-K+-based porous coordination polymer showed selective sorption of polar volatile organics, which may have potential applications for molecular sieves, sensors, and absorption and separation processes.

Graphical abstractThe iQ[7]-K+-based porous coordination polymer showed selective sorption of polar volatile organics, which may have potential applications for molecular sieves, sensors, and absorption and separation processes.Figure optionsDownload full-size imageDownload as PowerPoint slide