Amphoteric chalcogen-bonding and halogen-bonding rotaxanes for anion or cation recognition.

ABSTRACT: The ever-increasing demand in the development of host molecules for the recognition of charged species is stimulated by their fundamental roles in numerous biological and environmental processes. Here, capitalizing on the inherent amphoteric nature of anisotropically polarized tellurium or iodine atoms, we demonstrate a proof of concept in charged guest recognition, where the same neutral host structure binds both cations or anions solely through its chalcogen or halogen donor atoms. Through extensive ¹H nuclear magnetic resonance titration experiments and computational density functional theory studies, a library of chalcogen-bonding (ChB) and halogen-bonding (XB) mechanically interlocked [2]rotaxane molecules, including seminal examples of all-ChB and mixed ChB/XB [2]rotaxanes

SUBMITTER: Tse YC 

PROVIDER: S-EPMC11882458 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature