Results 11 to 20 of about 1,333 (175)
Mechanical Susceptibility of a Rotaxane [PDF]
Journal 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
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Recent Advances in the Synthesis of Ammonium-Based Rotaxanes
Molecules, 2010 The number of synthetic methods enabling the preparation of ammonium-based rotaxanes has increased very rapidly in the past ten years. The challenge in the synthesis of rotaxanes results from the rather weak interactions between the ammonium-containing ...
Dominic Thibeault, Jean-François Morin
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Functional Rotaxanes in Catalysis
Chemistry – 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
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Light-responsive rotaxane-based materials: inducing motion in the solid state
Beilstein Journal of Organic Chemistry, 2023 Light-responsive rotaxane-based solid-state materials are ideal scaffolds in order to develop smart materials due to the properties provided by the mechanical bond, such as control over the dynamics of the components upon application of external stimuli.
Adrian Saura-Sanmartin
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Journal of the American Chemical Society, 2023 Challenges for the development of efficacious new superbases include their ease of synthesis, chemical stability, and high basicity, while minimizing nucleophilicity is important for reducing unwanted side reactions. Here, we introduce a new family of organic superbases, compact amine-crown ether rotaxanes, which show desirable characteristics in all ...
Power, Martin J. +3 more
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A Mechanochromic Hydrogen‐Bonded Rotaxane [PDF]
Macromolecular Rapid Communications, 2020 AbstractTensile forces influence a variety of important biological processes and force sensors are required to study these processes in vivo. Current force sensors are often tailor‐made for a specific application, or activate at much higher forces than those observed at the cellular or tissue level. A versatile force sensor, with tunable mechanical and
Rafael Sandoval‐Torrientes +2 more
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ChemistryOpen, 2020 Rotaxane building blocks bearing 3,5‐bis(trifluoromethyl) benzenesulfonate (BTBS) stoppers have been efficiently prepared from a pillar[5]arene derivative, 3,5‐bis(trifluoromethyl) benzenesulfonyl chloride (BTBSCl) and different diols, namely 1,10 ...
Dr. Iwona Nierengarten +1 more
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Photochemical Unmasking of Polyyne Rotaxanes [PDF]
Journal of the American Chemical Society, 2020 Bulky photolabile masked alkyne equivalents (MAEs) are needed for the synthesis of polyyne polyrotaxanes, as insulated molecular wires and as stabilized forms of the linear polymeric allotrope of carbon, carbyne. We have synthesized a novel MAE based on phenanthrene and compared it with an indane-based MAE.
Steffen L. Woltering +4 more
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CHIMIA, 2016 Pillar[n]arenes are a new class of macrocycles that are efficiently prepared from readily available building blocks. In this particular field, our research teams became interested in the use of a pillar[5]arene core as a compact scaffold for the
Iwona Nierengarten +2 more
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Mechanically interlocked molecular architectures of valinomycin as cancer targeted prodrugs
Nano Select, 2022 Macrocyclic drugs are promising agents for treating a variety of diseases. However, these compounds usually present delivery limitations, such as low tissue selectivity and poor cellular uptake, which may impair efficacy and clinical translation.
Yoshihiro Tachihara +4 more
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