Results 31 to 40 of about 5,195 (200)
Supramolecular Mechanophore Additives Enable Mechanochromic Hydrogels
Angewandte Chemie, EarlyView.A supramolecular loop‐forming mechanophore featuring a quencher and an emitter is incorporated as a water‐soluble macromolecular additive into hydrogels. In the stress‐free state, intramolecular charge‐transfer interactions fold the loop and quench fluorescence.
Iulia Scarlat +2 more
wiley +2 more sources
Beilstein Journal of Organic Chemistry, 2014 We synthesized symmetrically insulated oligo(para-phenylene) and oligothiophene with a pseudo-linked [3]rotaxane structure by full rotation of glucopyranose units via a flipping (tumbling) mechanism in the π-conjugated guest having two permethylated β ...
Jun Terao +5 more
doaj +1 more source
Self-assembly of [2]Rotaxane Exploiting Reversible Pt(II)- Pyridine Coordinate Bonds
Molecules, 2004 A dinuclear self-assembled cationic macrocycle based on Pt(II)-N(pyridine) coordinative bonds and having competitive triflate anions, as metal counterions, is used in the construction of [2]rotaxane and [2]pseudorotaxane architectures assisted by ...
Rosa M. Gomila +5 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2014 We report on the synthesis as well as the optical, electrochemical and morphological properties of two polyrotaxanes (4a and 4b), which consist of electron-accepting 9,9-dicyanomethylenefluorene 1 as an inclusion complex in persilylated β- or γ ...
Aurica Farcas +5 more
doaj +1 more source
Photochromic rotaxanes and pseudorotaxanes
Photochemical & Photobiological Sciences, 2019 Among stimulus-responsive molecular ring-on-thread rotaxanes and pseudorotaxanes, variants incorporating photochromic sub-units are attracting considerable attention as their properties and structure can be remotely and precisely controlled, additionally without producing chemical waste. The focus herein is on photoswitching-driven assembly/disassembly
Shilin, Yu +2 more
openaire +2 more sources
Triply Threaded [4]Rotaxanes [PDF]
Journal of the American Chemical Society, 2016 [4]Rotaxanes featuring three axles threaded through a single ring have been prepared through active metal template synthesis. Nickel-catalyzed sp(3)-sp(3) homocouplings of alkyl bromide "half-threads" through 37- and 38-membered 2,2':6',2″-terpyridyl macrocycles generate triply threaded [4]rotaxanes in up to 11% yield.
Danon, J. J. +4 more
openaire +5 more sources
Remote Control of the Synthesis of a [2]Rotaxane and its Shuttling via Metal‐Ion Translocation
ChemistryOpen, 2019 Remote control in an eight‐component network commanded both the synthesis and shuttling of a [2]rotaxane via metal‐ion translocation, the latter being easily monitored by distinct colorimetric and fluorimetric signals.
Indrajit Paul +3 more
doaj +1 more source
ReactionsA new topological material, the [c2]daisy-chain rotaxane network, was successfully synthesized via a thiol-ene reaction between a [c2]daisy-chain rotaxane, which consists of a host–guest compound (H–G compound) where a crown ether and a secondary ...
Risako Kamoto +2 more
doaj +1 more source
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
doaj +1 more source
Nanohoop Rotaxane Design to Enhance Selectivity of Reaction Based Probes: A Proof of Principle Study [PDF]
, 2020 A novel fluorescent probe design based on the interlocking of a reactive thread in a rigid nanohoop fluorophore is reported. This rotaxane design leads to size-selective sensing of thiolates in organic solution.
Ramesh, Jasti +4 more
core +2 more sources