title: Reversibly tunable helix inversion in supramolecular gels trigged by Co(2+).
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.
authors.affiliation: Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, South Korea. jonghwa@gnu.ac.kr.
authors.forename: So Hyeon
authors.initials: SH
authors.lastname: Park
authors.forename: Sung Ho
authors.initials: SH
authors.lastname: Jung
authors.forename: Junho
authors.initials: J
authors.lastname: Ahn
authors.forename: Ji Ha
authors.initials: JH
authors.lastname: Lee
authors.forename: Ki-Young
authors.initials: KY
authors.lastname: Kwon
authors.forename: Jiwon
authors.initials: J
authors.lastname: Jeon
authors.forename: Hyungjun
authors.initials: H
authors.lastname: Kim
authors.forename: Justyn
authors.initials: J
authors.lastname: Jaworski
authors.forename: Jong Hwa
authors.initials: JH
authors.lastname: Jung
mesh_terms: D002942:Circular Dichroism; D003035:Cobalt / Q000737:chemistry*; D005782:Gels / Q000737:chemistry*; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D011725:Pyridines / Q000737:chemistry
chemical_list: D005782:Gels; D008024:Ligands; D011725:Pyridines; D003035:Cobalt; C023666:pyridine