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. Author manuscript; available in PMC: 2015 Jul 8.
Published in final edited form as: Nat Commun. 2015 Jun 30;6:7574. doi: 10.1038/ncomms8574

Figure 3. Fibrillar morphologies of halogenated hydrogels.

Figure 3

a-e, Confocal microscopy images of peptide hydrogels at a concentration of 15 mM upon aging 48 hours at r.t. and after staining with Rhodamine B (scale bars, 100 μm). a, b, and c show bundles of long twisted fibrils belonging to hydrogels of peptides DF(I)NKF(I), DF(I)NKF, and DF(Br)NKF(Br), respectively. d and e show much smaller fibrils of hydrogels of peptides DF(Cl)NKF(Cl) and DFNKF(I), which intertwine and form a matrix-type structure. f, TEM image of the dried hydrogel of peptide DF(I)NKF(I) showing an intertwined network of long fibrils (scale bars, 0.5 μm and 5 nm).