Abstract
Controlled directional transport of molecules is essential to complex natural systems, from cellular transport up to organismal circulatory systems. In contrast to these natural systems, synthetic systems that enable transport of molecules between several spatial locations on the macroscopic scale, when external stimuli are applied, remain to be explored. Now, the transfer of a supramolecular cage is reported with controlled directionality between three phases, based on a cage that responds reversibly in two distinct ways to different anions. Notably, circulatory phase transfer of the cage was demonstrated based on a system where the three layers of solvent are arranged within a circular track. The direction of circulation between solvent phases depended upon the order of addition of anions.
Highlights
Controlled directional transport of molecules is essential to complex natural systems, from cellular transport up to organismal circulatory systems
Circulatory phase transfer of the cage was demonstrated based on a system where the three layers of solvent are arranged within a circular track
Taking inspiration from these natural systems, it would be desirable to construct artificial systems where components are controllably transported between locations on a macroscopic scale, based on synthetic molecules that can interact with chemical signals, which induce different transport processes
Summary
Controlled directional transport of molecules is essential to complex natural systems, from cellular transport up to organismal circulatory systems. We report the circulatory phase transfer of a newly synthesized FeII4L4 tetrahedral cage containing tricoordinated boron atoms at the center of each face (Figure 1 a), in response to the addition of three different anions.
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