Royal Society of Chemistry, Chemical Science, 5(12), p. 1826-1833, 2021
DOI: 10.1039/d0sc05897a
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Spacers linking 2,6-pyridinedicarboxamide units influence the tightness of the corresponding lanthanide-coordinated overhand knot. β-Hairpin forming motifs generate a metal-coordinated pseudopeptide with a knotted tertiary structure.