Redox-active rotaxanes and catenanes for anion sensing by Evans, N

“…The syntheses of a bis-stoppered 1, 2, 3, 4, 5-pentaphenylferrocene [2]rotaxane and a ferrocene containing [3]rotaxane are presented, along with their subsequent anion recognition studies. …”

Cyclodextrin Rotaxanes of Pt Complexes and Their Conversion to Pt Nanoparticles by Yuji Suzaki, Yuhei Fujii, Kohtaro Osakada

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Synthesis of a water-soluble conjugated [3]rotaxane by Anderson, S, Anderson, H

“…Hydrophobic binding and Glaser coupling enable the synthesis of [3]rotaxane 1 in 30% yield. The conjugated dumbbell component fluoresces six times more brightly when encased in cyclophane rings than when 'naked' in solution. …”

Lanthanide architectures, rotaxanes and responsive d-f assemblies by Tropiano, M

“…</p> <p>In chapter three, a lanthanide complex is coupled with a rotaxane by Cu(I) "click" reaction. A detailed study of the anion sensing ability of this supramolecular structure follows.…”

Single DNA rotaxanes of a transmembrane pore protein. by Sánchez-Quesada, J, Saghatelian, A, Cheley, S, Bayley, H, Ghadiri, MR

“…Threading a molecular needle: An α-hemolysin transmembrane pore can be threaded in a desired orientation by DNA-poly(ethylene glycol) (DNA-PEG) hybrid strands to yield functional rotaxanes (see figure). The single-molecule rotaxanes are stable and have a reversible two-state switching capacity that depends on the applied potential, orientation, and method of threading and capture used.…”

Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation. by Yau, C, Pascu, S, Odom, SA, Warren, J, Klotz, E, Frampton, M, Williams, C, Coropceanu, V, Kuimova, M, Phillips, D, Barlow, S, Brédas, J, Marder, SR, Millar, V, Anderson, H

“…The crystal structure of a cyanine dye rotaxane shows that the cyclodextrin is tightly threaded round the polymethine bridge of the dye; encapsulation dramatically increases the kinetic chemical stability of the radicals formed on oxidation and reduction of the dye, making it possible to observe the rotaxane radical dication by ESR and UV-vis-NIR spectroscopy.…”

Lanthanide appended rotaxanes respond to changing chloride concentration by Allain, C, Beer, P, Faulkner, S, Jones, M, Kenwright, A, Kilah, N, Knighton, R, Sorensen, T, Tropiano, M

“…Lanthanide appended rotaxanes have been prepared by the CuAAC 'click' reaction between an azide appended rotaxane and lanthanide complexes of propargyl DO3A. …”

Solid-phase synthesis of oligo(phenylene ethynylene) rotaxanes. by Daniell, H, Klotz, E, Odell, B, Claridge, T, Anderson, H

“…(Chemical Equation Presented) Hooks and feelers: The use of a bulky tripod-shaped stopper as a solid-phase attachment point proves essential for the controlled iterative solid-phase synthesis of an α-cyclodextrin [3]rotaxane (see picture). NMR spectroscopy confirms the structure and shows that both the cyclodextrin units have well-defined locations and orientations. © 2007 Wiley-VCH Verlag GmbH and Co. …”

Chalcogen bonding macrocycles and [2]rotaxanes for anion recognition by Lim, J, Marques, I, Thompson, A, Christensen, K, Felix, V, Beer, P

“…Exploiting this property, the first examples of mechanically interlocked [2]rotaxanes containing ChB-donor groups are prepared via an active metal template strategy. …”

Ultrafast all-optical switching and laser action in rotaxane by Mroz, M, Perissinotto, S, Virgili, T, Salerno, M, Sforazzini, G, Anderson, H, Lanzani, G

“…All our findings point out the potential role of rotaxanes in photonics, as amplifiers and reopen the route to the electrically pumped organic lasers and all-optical logic devices. © 2010 Materials Research Society.…”

ORGN 44-Synthesis and characterization of linear acene rotaxanes by Stone, M, Anderson, H

Radical cation stabilization in a cucurbituril oligoaniline rotaxane. by Eelkema, R, Maeda, K, Odell, B, Anderson, H

“…A cucurbituril-encapsulated oligoaniline rotaxane is synthesized in high yield by reductive amination in aqueous acid. …”

Anion-induced shuttling of a naphthalimide triazolium rotaxane. by Spence, G, Pitak, M, Beer, P

“…The anion-templated synthesis of a rotaxane structure, incorporating the new naphthalimide triazolium motif, is described and the interlocked host shown to exhibit selective, uni-directional, anion-induced shuttling. …”

Synthesis of fluorescent stilbene and tolan rotaxanes by Suzuki coupling by Stanier, C, O'Connell, M, Clegg, W, Anderson, H

“…Highly fluorescent stilbene and tolan cyclodextrin [2]rotaxanes have been synthesised in good yield using aqueous Suzuki coupling, and the crystal structure of one of these rotaxanes has been determined.…”

Active-metal template clipping synthesis of novel [2]rotaxanes by Cătălin C. Anghel, Teodor A. Cucuiet, Niculina D. Hădade, Ion Grosu

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Electrochemical bromide sensing with a halogen bonding [2]rotaxane by Lim, J, Beer, P

“…Using the active‐metal templation methodology, the first redox‐active ferrocene‐appended rotaxane containing an all‐halogen bonding anion binding cavity was synthesised. 1H NMR binding studies in aqueous‐organic solvent media demonstrated a marked recognition bias for heavy halides, facilitating the selective redox sensing of bromide over chloride to be demonstrated for the very first time with an interlocked host molecule.…”

Cationic all-halogen bonding rotaxanes for halide anion recognition by Li, X, Lim, J, Beer, P

“…A family of cationic halogen bonding [2]rotaxanes have been synthesised via an active-metal template synthetic strategy. 1H NMR spectroscopic anion titration investigations reveal these interlocked host systems recognize halides selectively over oxoanions in aqueous-organic solvent media. …”

A cyclodextrin-insulated anthracene rotaxane with enhanced fluorescence and photostability. by Stone, M, Anderson, H

“…A beta-cyclodextrin anthracene rotaxane was synthesized and found to be significantly more resistant to fluorescence quenching and photobleaching than the uninsulated anthracene derivative.…”

Anion directed synthesis of a hydrogensulfate selective luminescent rotaxane. by Curiel, D, Beer, P

“…A new photo-active rhenium(I) bipyridyl based rotaxane has been synthesised which by virtue of the unique interlocked structural cavity selectively senses hydrogensulfate using luminescence spectroscopy.…”

Enantioselective anion recognition by chiral halogen bonding [2]rotaxanes by Lim, J, Marques, I, Felix, V, Beer, P

“…Representing the first detailed investigation of the use of chiral XB rotaxanes for this purpose, extensive 1H NMR binding studies and mo-lecular dynamics (MD) simulation experiments revealed that the chiral rotaxane cavity significantly enhances enantio-discrimination compared to the non-interlocked free axle and macrocycle components. …”