The construction of a supramolecular polymeric rotaxane from bipyridine-ruthenium and cyclodextrin.
نویسندگان
چکیده
A luminescent supramolecular link is constructed by a very simple method using bipyridine-ruthenium and cyclodextrin, which displays not only a quasi-linear structure, but also a satisfactory fluorescence emission in both solution and the solid state.
منابع مشابه
Photoinduced electron transfer between metal-coordinated cyclodextrin assemblies and viologens.
Two novel tris(bipyridine)ruthenium(II) complexes bearing two and six beta-cyclodextrin binding sites on their ligands have been synthesised and characterised. Complex 1, bearing two cyclodextrins, adopts a conformation in aqueous solution where parts of the aromatic ligands are self-included into the cyclodextrin moieties. This results in a loss of symmetry of the complex and gives rise to a m...
متن کاملIodide Recognition and Sensing in Water by a Halogen‐Bonding Ruthenium(II)‐Based Rotaxane
The synthesis and anion-recognition properties of the first halogen-bonding rotaxane host to sense anions in water is described. The rotaxane features a halogen-bonding axle component, which is stoppered with water-solubilizing permethylated β-cyclodextrin motifs, and a luminescent tris(bipyridine)ruthenium(II)-based macrocycle component. (1) H NMR anion-binding titrations in D2 O reveal the ha...
متن کاملActive cross-linkers that lead to active gels.
Chemomechanical reaction: The first octahedral ruthenium bipyridine complex that bears six polymerizable vinyl groups is used as an active cross-linker. It is a key building block for cross-linked polymeric networks (right) thus allowing the construction of molecular architectures in chemomechanical soft materials.
متن کاملFarras P, Waller H, Benniston AC. Enhanced Photostability of a Ruthenium(II) Polypyridyl Complex under Highly Oxidizing Aqueous Conditions by its Partial Inclusion into a Cyclodextrin. Chemistry-A
The complex [Ru(bpy)2L] , where bpy = 2,2’-bipyridine, L = 4-(phenylethynyl)-2,2’-bipyridine, was prepared in its racemic and resolved forms (and . The phenylethynyl unit on the bipyridine for the complex acts as a binding site for -cyclodextrin in water (1:1 complex, K = 3390 M) or -cyclodextrin (2:1 complex, K1 = 887 M , K2 = 8070 M ). The presence of the cyclodextrin provides partial p...
متن کاملSupramolecular thermoresponsive hyperbranched polymers constructed from poly(N-isopropylacrylamide) containing one adamantyl and two β-cyclodextrin terminal moieties.
Poly(N-isopropylacrylamide) (PNIPAM) oligomer containing one adamantyl (AD) and two β-cyclodextrin (β-CD) moieties at the chain terminals, AD-PNIPAM-(β-CD)(2), was synthesized by atom transfer radical polymerization (ATRP) and successive click reactions. In aqueous solution, AD-PNIPAM-(β-CD)(2) spontaneously forms supramolecular thermoresponsive hyperbranched polymers via molecular recognition ...
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عنوان ژورنال:
- Chemical communications
دوره 13 شماره
صفحات -
تاریخ انتشار 2005