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Updated: Apr 23, 2026

Synthesis of an Intein-mediated Artificial Protein Hydrogel
Published on: January 27, 2014
Reversibly tunable helix inversion in supramolecular gels trigged by Co(2+)
So Hyeon Park1, Sung Ho Jung, Junho Ahn
1Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, South Korea. jonghwa@gnu.ac.kr.
Abstract:
Terpyridine-based ligands form octahedral complexes with Co(2+) at low cation concentrations to form helical assemblies which provide a supramolecular gel framework. Increasing the Co(2+) concentration above 0.6 equiv. reveals a second, co-existing square pyramidal complex derived assembly, having a distinct helicity. While this geometry dominates at 1 equiv. of Co(2+), we find this unique form of helical inversion to be fully reversible and controllable.
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