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Articles on Catenanes
Construction of an interpenetrated structure of macrocycles.
The construction of an interpenetrated structure of macrocycles by a CuAAC "click" reaction was achieved and the binding selectivity of indolocarbazole for a chloride anion was enhanced upon catenanation.
A bistable polycatenane forms nanosuperstructures.
Side-chain polycatenanes at the click of a switch! A bistable side-chain polycatenane has been synthesized and found to form hierarchical self-assembled hollow superstructures of nanoscale dimensions in solution. Molecular electromechanical switching (see picture) of the material is demonstrat...
A flavin-based catenane.
We report the synthesis, solid-state and preliminary solution properties of a flavin-based catenane.
Dynamic combinatorial discovery of a -catenane and its guest-induced conversion into a molecular square host.
Lim15/Dmc1 enhances DNA topoisomerase II catenation activity independent of sequence homology.
We reported previously that Coprinus cinereus Lim15/Dmc1 (CcLim15), a meiosis-specific recA-like protein, could specifically activate C. cinereus DNA topoisomerase II (CcTopII). In particular, it enhanced the catenation activity of CcTopII in vitro at the meiotic prophase stage (Iwabata K, Koshiyama...
Palladium(II)-directed self-assembly of dynamic donor-acceptor catenanes.
Pi-stacking enhanced dynamic and redox-switchable self-assembly of donor-acceptor metallo-catenanes from diimide derivatives and crown et...
Molecular catenation via metal-directed self-assembly and pi-donor/pi-acceptor interactions: efficient one-pot synthesis, characterization, ...
Dinuclear square metallocycles 3a,b assemble spontaneously when M(en)(OTf)2 (M = Pd, Pt) and a 4,4'-bipyridinium ligand are mixed in acetonitrile. Six new catenanes were prepared in good yields by thermodynamically driven self-assembly reaction of molecular squares 3a,b and pi-complementary dioxo...
Conformational interconversions in catenanes containing a wide rigid bis(p-benzyl)methyl spacer.
The conformational interconversions of four catenanes (1-4) containing a dibenzo-34-crown-10 ether (BPP34C10) interlocked with rings containing two 4,4'-dipyridiniums tethered by 1,3-bis(ethyloxy)phenyl and bis(p-benzyl)methyl spacers have been studied by VT 1H NMR spectroscopy. Symmetrically pla...
Dynamic donor-acceptor catenanes.
We report here their thermodynamically controlled synthesis from isolated pi-donor and pi-acceptor rings under the catalytic influence of tetra butylammonium iodide. The initial nucleophilic attack of iodide ion, which opens up the pi-acceptor ring, is followed by complexation to the pi-donor ring a...