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. 2022 Jan 11;13:248. doi: 10.1038/s41467-021-27831-2

Fig. 6. Dilution-induced supramolecular polymerization of porphyrin-based polymers.

Fig. 6

a Schematic representation of dilution-induced supramolecular polymerization process. b Absorbance spectra showing the dilution-induced repolymerization from J- to H-aggregates when decreasing the concentration from 25 to 5 μM for a 1:1 mixture of S-Zn/S-Mn in MCH. c AFM images at cS-Zn = 25 µM and (d) cS-Zn = 5 µM showing the depolymerization with added equivalents of chain-capper at high concentration, and the reforming of supramolecular fibers in dilute solutions. Samples were prepared by drop-casting the solutions on mica, scale bars represent 3 μm.