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Abstract | Cited by

A novel light-responsive supramolecular polymer was demonstrated from an overcrowded alkene switch (OAS) mounted with two rigid 2-ureido-4-pyrimidinone (UPy) groups. By strong quadruple hydrogen bonding interactions, transOAS-Upy could form well-defined nanospheres in chloroform, which would be transformed into worm-like assemblies after UV irradiation. Moreover, the inverse process of this system could be achieved by exposure to heat.

Graphical abstract: Photo-driven morphological transformations of supramolecular polymers actuated by an overcrowded alkene switch

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