We describe the modular design of a pseudorotaxane-based supramolecular pump and its photochemically driven autonomous nonequilibrium operation in a dissipative regime. These properties derive from careful engineering of the energy maxima and minima along the threading coordinate and their light-triggered modulation. Unlike its precursor, this second-generation system is amenable to functionalization for integration into more complex devices.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8323096PMC
http://dx.doi.org/10.1021/jacs.1c06027DOI Listing

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