Supramolecular polymerization couples constitutional adaptability and fluorescence response in a dynamic covalent library

A fluorescence-functional dynamic covalent library is established in which supramolecular polymerization couples constitutional adaptation with a fluorescent readout. Dynamic covalent CC/CN metathesis, combined with selective two-stage supramolecular polymerization, enables solvent- and temperature-responsiveness of library distributions, with a concomitant pronounced fluorescence response. This strategy demonstrates an effective linkage between chemical distributions and optical behaviour in a complex dynamic system.