Formation of supramolecular channels by reversible unwinding-rewinding of bis(indole) double helix via ion coordination

Abstract

Synthetic supramolecular double-stranded helical systems that can undergo reversible unwinding are rare. Here, the authors report bis(indole)-based double helix systems that unwind in the presence of chloride, forming supramolecular ion channels; Addition of silver enables the regeneration of the double helix.