Abstract
We investigated the formation of nanoribbon hydrogels in a mixed system of zinc ions, bis(ligand)s, and triblock peptide copolymers. Using a combination of experimental techniques: dynamic light scattering, cryo-transmission electron microscopy, small-angle X-ray scattering and circular dichroism, we arrived at a model for the formation of nanoribbon hydrogels in which well-defined nanoribbons are formed out of multiple supramolecular interactions: (1) metal coordination that yields supramolecular polyelectrolytes; (2) electrostatic complexation between the supramolecular polyelectrolytes and the oppositely charged blocks of the peptide copolymers; (3) hydrogen bond and (4) hydrophobic interactions that support the secondary and ternary structure of the ribbons; (5) van der Waals interactions that enable bundling of the ribbons.
Original language | English |
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Pages (from-to) | 12899-12908 |
Journal | Langmuir |
Volume | 25 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2009 |
Keywords
- block-copolymer micelles
- coacervate core micelles
- small-angle scattering
- concentrated colloidal suspensions
- coordination polymers
- circular-dichroism
- diblock copolymer
- metal-ions
- proteins
- transition