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All › Organic Chemicals › Rotaxanes

Rotaxanes (0)

      Articles on Rotaxanes

      1. Explanation for the electrophoresis behaviour of DNA condensation induced by pseudopolyrotaxane of different lengths.
        Sen Hou, Kun Yang, and Xi-Zeng Feng

        Electrophoresis 29(21):4391-8 (2008) PMID 19016566

        We synthesized a series of pseudopolyrotaxanes (PPRs) by threading 6-[(6-aminohexyl)amino]-6-deoxy-beta-CD dichloride on the polypropylene glycol and investigated their DNA condensation efficiency by electrophoresis assay. The PPRs of the middle length exhibited the best DNA condensation efficiency...
      2. Supramolecular control of polyplex dissociation and cell transfection: Efficacy of amino groups and threading cyclodextrins in biocleavable ...
        Atsushi Yamashita, Daizo Kanda, ... Hideyoshi Harashima

        J Control Release 131(2):8 (2008) PMID 18700157

        We prepared biocleavable polyrotaxanes with different numbers of threading alpha-CD and amino (DMAE) groups to enhance the transfection activity of DMAE-SS-PRXs. 29DMAE-alpha18-SS-PRX, in which the numbers of alpha-CD molecules and amino groups were 18 and 29 respectively, exhibited a high transfect...
      3. Computational models for the shuttling motion of the macrocycle in rotaxane-based molecular switches.
        Pipsa P Hirva, Matti M Haukka, and Tapani A TA Pakkanen

        14(10):879-86 (2008) PMID 18604570

        We have investigated a prototypical shaft including two octahedral ruthenium complexes linked by a conjugated C(14) carbon chain, where the shuttling motion can be triggered by changing the electronic environment of the active complexes with ligand exchange reactions. The computational results also...
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      4. Electrical and mechanical switching in a realistic [2]rotaxane device model.
        Yong-Hoon Kim

        J Nanosci Nanotechnol 8(9):4593-7 (2008) PMID 19049065

      5. Rotaxane-type resorcinarene tetramers as histone-sensing fluorescent receptors.
        Osamu O Hayashida and Masaki M Uchiyama

        Org Biomol Chem 6(17):3166-70 (2008) PMID 18698476

        Rotaxane-type receptors, which were composed of anionic cyclophane-based resorcinarene tetramers as the wheel and a 2,6-disubstituted naphthalene derivative having two fluorophore moieties, such as fluorescein and rhodamine residues, as the axle ( and , respectively), were prepared. Rotaxane-type re...
      6. An AFM/rotaxane molecular reading head for sequence-dependent DNA structures.
        Brian A BA Ashcroft, Quinn Q Spadola, ... Stuart S Lindsay

        Small 4(9):1468-75 (2008) PMID 18680093 PMCID 2597423

        DNA secondary structure may prove to be a significant obstacle both for enzymes that process DNA through an orifice and for the passage of DNA through nanopores proposed for some novel sequencing schemes. A nanomechanical molecular "tape reader" is assembled by threading a nanopore over DNA and pull...
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      7. A new pH-switchable dimannosyl[c2]daisy chain molecular machine.
        Frédéric Coutrot, Camille Romuald, and Eric Busseron

        Org Lett 10(17):3741-4 (2008) PMID 18666774

      8. Single- and double-stranded helical polymers: synthesis, structures, and functions.
        Eiji Yashima, Katsuhiro Maeda, and Yoshio Furusho

        Acc Chem Res 41(9):1166-80 (2008) PMID 18690750

        We describe the recent advances in the synthesis, structures, and functions of single- and double-stranded helical polymers from our group and others and provide a brief historical overview of synthetic helical polymers. We found unique macromolecules that fold into a preferred-handed helix through...
      9. Cyclic [2]pseudorotaxane tetramers consisting of two rigid rods threaded through two bis-macrocycles: copper(I)-templated synthesis and X-ra...
        Julien J Frey, Christian C Tock, ... Kari K Rissanen

        J Am Chem Soc 130(33):11013-22 (2008) PMID 18652470

        Variously substituted coordinating rigid rods have been synthesized which incorporate a central 4,7-phenanthroline nucleus attached to two 2-pyridyl groups via its 3 and 8 positions, so as to yield bis-bidentate chelates, the two-coordinating axes of the chelates being parallel to one another. Regar...
      10. Synthesis and photophysical investigation of squaraine rotaxanes by "clicked capping".
        Jeremiah J JJ Gassensmith, Lorna L Barr, ... Bradley D BD Smith

        Org Lett 10(15):3343-6 (2008) PMID 18582079

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