作者:Chi-You Tsai、Chien-Chen Lai、Yi-Hung Liu、Shie-Ming Peng、Richard P. Cheng、Sheng-Hsien Chiu
DOI:10.1021/acs.joc.8b00601
日期:2018.5.18
Sodium ion-controlled switching from “folded” to “linear” states results in significant changes in the molecular shape of a [2]catenane, such that it mimics the operation of a gin trap, with a fluorescent alarm signal appearing when pyrene side arms were present on its two macrocyclic components.
A switch in time: Gel–sol transitions of a urea‐based [2]rotaxane gelator are controlled by the degree of solvent exposure of the hydrogen‐bond‐donating urea station and the orientation of the hydrogen‐bond‐accepting CO groups of the interlocked ethylene glycol based macrocycle (N blue, O and macrocycle red, phenyl green). Both acid/base and anion‐exchange control can be used to reversibly transition
Halogen‐Bonding Heteroditopic [2]Catenanes for Recognition of Alkali Metal/Halide Ion Pairs
作者:Hui Min Tay、Yuen Cheong Tse、Andrew Docker、Christian Gateley、Amber L. Thompson、Heike Kuhn、Zongyao Zhang、Paul D. Beer
DOI:10.1002/anie.202214785
日期:2023.1.26
halogen bonding heteroditopic [2]catenanes exhibit positive cooperative ion-pair recognition behaviour, which has been exploited for the extraction of solid sodium or potassium halide salts into organic media. Changing the size of the component macrocycles dramatically influences the ion-binding affinity, stoichiometry, and ion-pair complexation mode of the [2]catenanes.
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−.
COMPOSITION CONTAINING POLYCATIONIC TRIBLOCK COPOLYMER, POLYANIONIC POLYMER AND PHYSIOLOGICALLY ACTIVE PEPTIDE
申请人:UNIVERSITY OF TSUKUBA
公开号:US20160175247A1
公开(公告)日:2016-06-23
[Problem] To provide a physiologically active peptide-loaded stable composition for injection into living bodies.
[Solution] A composition containing a triblock copolymer represented by formula (I), a polyanionic polymer and a physiologically active peptide:
CNR-PEG-CNR (I)
in the formula,
CNR moieties are each independently a polymer segment containing a repeating unit that contains, as a part of a pendant group, a cyclic nitroxide radical bonded to a main polymer chain via a linking group that contains at least one amino group, and
PEG is a segment that contains poly(ethylene glycol).