Results 1 to 10 of about 5,195 (200)

Dynamic artificial light-harvesting systems based on rotaxane dendrimers

open access: yesGiant, 2020
Although the preparation of artificial light-harvesting systems (ALHs) has attracted increasing attention, dynamic regulation of antenna effect in ALHs has been still a major challenge.
Yubin Ke, Lin Xu, Hanqiu Jiang
exaly   +3 more sources

Breaking the toughness-strength trade-off in polymer nanocomposites via a mechanically interlocked interface [PDF]

open access: yesNature Communications
Polymer nanocomposites face a fundamental challenge in simultaneously enhancing strength and toughness, as current methods often compromise one for the other. To address this issue, we have incorporated mechanically interlocked [2]rotaxane units into the
Wei You   +10 more
doaj   +2 more sources

Effect of a photoswitchable rotaxane on membrane permeabilization across lipid compositions [PDF]

open access: yesBeilstein Journal of Organic Chemistry
This study investigated a rotaxane featuring azobenzene photoswitches in its macrocycle and its ability to modulate membrane permeability in large unilamellar vesicles (LUVs) of varying lipid compositions.
Udyogi N. K. Conthagamage   +3 more
doaj   +2 more sources

A Piston-Rotaxane with Two Potential Stripes: Force Transitions and Yield Stresses

open access: yesMolecules, 2013
We examine a rod piston-rotaxane system, where the positions of several mobile rings on the axle are controlled by an external force acting on one of the rings. This allows us to access the translational entropy of the rings.
Edith Sevick, David R M Williams
exaly   +3 more sources

Stimuli-responsive rotaxane-branched dendronized polymers with tunable thermal and rheological properties

open access: yesNature Communications, 2023
Aiming at the creation of polymers with attractive dynamic properties, herein, rotaxane-branched dendronized polymers (DPs) with rotaxane-branched dendrons attached onto the polymer chains are proposed.
Yu Zhu   +10 more
doaj   +1 more source

One-Pot Synthesis of Stable Poly([c2]Daisy–chain Rotaxane) with Pseudo-Stopper via Metathesis Reaction and Thiol-Ene Reaction

open access: yesReactions, 2023
Rotaxanes, known as supramolecular compounds, are expected to find applications in functional materials due to their high degree of freedom. However, their synthesis requires multistep reactions, and there is a demand for more convenient methods to ...
Risako Kamoto   +2 more
doaj   +1 more source

Mechanical Susceptibility of a Rotaxane [PDF]

open access: yesJournal of the American Chemical Society, 2019
We have investigated the mechanical dissociation of an ammonium/crown ether rotaxane using experimental (sonication) and computational (CoGEF) methods and found that it breaks faster than its noninterlocked or uncoupled interlocked (i.e., pulled from both sides of the axle) counterparts.
Min Zhang, Guillaume De Bo
openaire   +3 more sources

Asymmetric rotaxanes as dual-modality supramolecular imaging agents for targeting cancer biomarkers

open access: yesCommunications Chemistry, 2023
Dual-modality imaging agents featuring both a radioactive complex for positron emission tomography (PET) and a fluorophore for optical fluorescence imaging (OFI) are crucial tools for reinforcing clinical diagnosis and intraoperative surgeries. We report
Faustine d’Orchymont, Jason P. Holland
doaj   +1 more source

Functional Rotaxanes in Catalysis

open access: yesChemistry – A European Journal, 2020
AbstractMechanically interlocked molecules (MIMs) have gained attention in the field of catalysis due to their unique molecular properties. Central to MIMs, rotaxanes are highly promising and attractive supramolecular catalysts due to their unique three‐dimensional structures and the flexibility of their subcomponents. This Minireview discusses the use
Carel Kwamen, Jochen Niemeyer
openaire   +2 more sources

Higher-generation type III-B rotaxane dendrimers with controlling particle size in three-dimensional molecular switching

open access: yesNature Communications, 2018
The complexity of rotaxane dendrimers poses a great synthetic challenge and the synthesis of higher generation rotaxane dendrimers has therefore rarely been reported. Here the authors report the synthesis of acid-base switchable rotaxane dendrimers up to
Chak-Shing Kwan   +4 more
doaj   +1 more source

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