Light-Powered Propeller-like Transporter for Boosted Transmembrane Ion Transport.

Abstract

Membrane-active molecular machines represent a recently emerging, yet important line of expansion in the field of artificial transmembrane transporters. Their hitherto demonstrated limited types (molecular swing, ion fishers, shuttlers, rotors, etc.) certainly call for new inspiring developments. Here, we report a very first motorized ion-transporting carrier-type transporter, i.e., a modularly tunable, light-powered propeller-like transporter derived from Feringa's molecular motor for consistently boosting transmembrane ion transport under continuous UV light irradiation. Based on the EC₅₀ values, the molecular propeller-mediated ion transport activities under UV light irradiation for 300 s are 2.31, 1.74, 2.29, 2.80, and 2.92 times those values obtained without irradiation for Li⁺, Na⁺, K⁺, Rb⁺, and Cs⁺ ions, respectively, with EC₅₀ value as low as 0.71 mol % for K⁺ ion under light irradiation.