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Nanofiber formation of dipeptide-based bolaamphiphiles, bis (N-α-amide-l-valyl-l-valine) 1,n-alkane dicarboxylate (n=6, 8, 10, and 12) in water was analyzed by TEM, SEM, IR, and XRD. The bolaamphiphiles proved to be coordinated to divalent transition-metal cations, such as Co 2+ , Ni 2+ , Cu 2+ , and Zn 2+ , giving precipitates, colloidal dispersions (loose hydrogels),...
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