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Illustrations of supramolecular self-assemblies of B12 (a) and B13 (b), the subsequent disruption to supramolecular network in the presence of Hg2+ and picric acid, respectively, and the eventual recovery of self-assembled network and blue fluorescence, on the addition of cyanide. Inset are photos showing the fluorescence colour of the composition at each stage. Reproduced with permission from [85,86]. Copyright 2019, Elsevier B. V. and the Royal Society of Chemistry.
