Evidence for ring spinning in rotaxanes induced with an alternate electric field

Bermúdez, V. de Zea; Capron, Nathalie; Gase, Torsten; Gatti, Francesco G.; Kajzar, F.; Leigh, David A.; Zerbetto, Francesco; Zhang, Songwei

doi:10.1117/12.408506

Cited by 2 publications

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“…Some molecular muscles − and molecular motors ,− have been synthesized on the concept of rotaxanes. Among the growing collection of molecular systems under consideration for nanoscale device applications, mechanically interlocked compounds derived from stimuli-responsive [ n ]rotaxanes ,,,,,,,,,− show great promise. These systems demonstrate dynamic, relative movements between their components, such as shuttling, enabling them to serve as stimuli-responsive switches operated via reversible, electrochemical oxidation−reduction, the addition of chemical reagents, the changes of pH and temperature, and the photoirradiation.…”

Section: Main Chain Polyrotaxanesmentioning

confidence: 99%

Polymeric Rotaxanes

et al. 2009

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2.2. Main Chain Polyrotaxane with Crown Ethers (CEs) 5985 2.3. Main Chain Polyrotaxanes with Other Wheel Compounds 5987 2.3.1. Cucurbit[n]uril-Based System 5987 2.3.2. Cyclobisparquat/Cyclophane-Based Systems 5988 2.3.3. Metal Coordination Systems 5989 2.3.4. Calixarene-Based System 5990 2.4. Applications of Main Chain Polyrotaxanes 5990 2.4.1. Biodegradable Polyrotaxanes and Hydrogels 5990 2.4.2. Molecular Tubes Prepared from Polyrotaxanes 5993 2.4.3. Supramolecular Light-Harvesting Antenna 5993 2.4.4. Insulated Polymers 5993 2.4.5. Stimuli-Responsive Molecular Shuttles Using Polyrotaxanes or Polypseudorotaxanes 5993 3. Side Chain Polyrotaxanes and Polypseudorotaxanes 5995 3.1. Background of Side Chain Polyrotaxanes and Polypseudorotaxanes 5995 3.2. Categories of Side Chain Polyrotaxanes and Polypseudorotaxanes 5997 3.3. Rotor/Polyaxis Systems (See Scheme a and b) 5997 3.3.1. CD-Based Systems 5997 3.3.2. Crown Ether-Based Systems 6003 3.3.3. Cucurbituril-Based Systems 6003 3.4. Polyrotor/Axis Systems (See Scheme c and d) 6004 3.4.1. CD-Based Systems 6004 3.4.2. Crown Ether-and Cyclophane-Based Systems

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Section: Main Chain Polyrotaxanesmentioning

confidence: 99%

Polymeric Rotaxanes

et al. 2009

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“…While translational motion is frequently achieved on redox-driven rotaxanes, to the best of our knowledge electrostatic fields have mainly been used to study circumrotation of the macrocycle around the rod. 9 , 10 Solution-based translational motion of DNA- or protein-based strands threaded through nanopores has been achieved with transmembrane electric potentials 11 , 12 which can be used for sensing DNA polymerase activity 13 , 14 or protein folding. 15 As demonstrated by these systems, the alignment of the axis along the electric field is an important prerequisite for the electrostatic field-induced translational switching.…”

Section: Introductionmentioning

confidence: 99%

Development of Rotaxanes as E-Field-Sensitive Superstructures in Plasmonic Nano-Antennas

et al. 2022

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We present the concept of electrostatic field driven supramolecular translation within electrically connected plasmonic nano-antennas. The antenna serves as anchoring point for the mechanically interlocked molecules, as electrode for the electrostatic field, and as amplifier of the antenna-enhanced fluorescence. The synthesis of a push-pull donor-π-acceptor chromophore with optical properties aligned to the antenna resonance is described and its immobilization on the surface demonstrated. Photoluminescence experiments of the chromophore on a gold nanoantenna are shown, highlighting the molecule-antenna coupling and resulting emission intensity increase. The successful synthesis of an electrostatic field sensitive [2]rotaxane in water is described and the tightrope walk between functionality and water solubility is illustrated by unsuccessful designs. In solution, enhanced fluorescence quantum yield is observed for the chromophore comprised in the mechanically interlocked [2]rotaxane in water and DMSO compared to the reference rod, ideal for future experiments in plasmonic nano-antennas.

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Evidence for ring spinning in rotaxanes induced with an alternate electric field

Cited by 2 publications

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Polymeric Rotaxanes

Polymeric Rotaxanes

Development of Rotaxanes as E-Field-Sensitive Superstructures in Plasmonic Nano-Antennas

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