Enhancement of anion recognition exhibited by a halogen-bonding rotaxane host system.
We report the first use of solution-phase halogen bonding to control and facilitate the assembly of an interlocked structure through the bromide anion-templated formation of a rotaxane based upon an iodotriazolium axle. The incorporation of a halogen atom into the rotaxane host cavity dramatically improves the anion-recognition capabilities of the interlocked receptor, giving unusual iodide selectivity in a competitive aqueous medium.
Kilah
Nathan L
NL
Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom.
Wise
Matthew D
MD
Serpell
Christopher J
CJ
Thompson
Amber L
AL
White
Nicholas G
NG
Christensen
Kirsten E
KE
Beer
Paul D
PD
D000838:Anions / Q000737:chemistry; D001665:Binding Sites; D018360:Crystallography, X-Ray; D006219:Halogens / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D043862:Rotaxanes / Q000138:chemical synthesis* / Q000737:chemistry; D012996:Solutions
D000838:Anions; D006219:Halogens; D043862:Rotaxanes; D012996:Solutions