Halogen bonding rotaxanes for nitrate recognition in aqueous media
作者:Sean W. Robinson、Paul D. Beer
DOI:10.1039/c6ob02339h
日期:——
Targeting the biologically and environmentally important nitrate anion, halogen bonding (XB) has been incorporated into three novel [2]rotaxane structural frameworks via an axle component containing covalently linked 3,5-bis-iodotriazole pyridine–pyridinium motifs. This has enabled the recognition of nitrate in aqueous media containing up to 90% water with equivalent binding affinity to chloride, illustrating
Chloride Recognition in Aqueous Media by a Rotaxane Prepared via a New Synthetic Pathway
作者:Laura M. Hancock、Paul D. Beer
DOI:10.1002/chem.200802029
日期:2009.1
Clip to engage a ring and interlock: The preparation of a novel [2]rotaxane by a new synthetic pathway that exploits anion templation in combination with π–π stacking interactions is described (see scheme). Preliminary anion binding investigations reveal the rotaxane is capable of selectively recognizing chloride in aqueous solvent media in preference to basic oxoanions.
Anion induced and inhibited circumrotation of a [2]catenane
作者:Ka-Yuen Ng、Vitor Felix、Sérgio M. Santos、Nicholas H. Rees、Paul D. Beer
DOI:10.1039/b719304a
日期:——
The first example of a catenane capable of performing circumrotation via an anion switching methodology is described; of particular interest is a conformational locking mechanism which results from chloride coordination in the catenane binding cavity.
A Halogen Bonding [2]Rotaxane Shuttle for Chloride‐Selective Optical Sensing
作者:Hui Min Tay、Andrew Docker、Andrew J. Taylor、Paul D. Beer
DOI:10.1002/chem.202400952
日期:——
A dynamic halogen bonding multi-station [2]rotaxane displays a selective optical response to chloride over bromide and iodide anions. Chloride binding induces a translocation of the isophthalamide-functionalised macrocycle from the naphthalene diimide (NDI) stations to the halogen bonding station, leading to a reduction in the donor-acceptor charge-transfer absorption arising from macrocycle-NDI interactions
动态卤素键合多位[2]轮烷对氯离子比溴离子和碘离子阴离子表现出选择性光学响应。氯离子结合诱导间苯二甲酰胺官能化大环化合物从萘二酰亚胺 (NDI) 位置易位到卤素键合位置,导致大环化合物 - NDI 相互作用引起的供体-受体电荷转移吸收减少,而较大的卤化物则排除在互锁腔之外。
Exploiting the Catenane Mechanical Bond Effect for Selective Halide Anion Transmembrane Transport
作者:Hui Min Tay、Toby G. Johnson、Andrew Docker、Matthew J. Langton、Paul D. Beer
DOI:10.1002/anie.202312745
日期:2023.11.20
Catenanes have been shown to be capable of anion transport across a lipid bilayer. The catenanes convergently encapsulate Cl− and Br− via halogen and hydrogenbonding motifs, markedly enhancing the binding affinity and membrane transport efficiency for Cl− and Br− relative to constituent macrocycles. The catenanes also showed exceptional transport selectivity for chloride over OH− and oxoanion NO3−.