Results 51 to 60 of about 1,333 (175)

Heterovalent, Homometallic Rings: Synthesis, Optical, and EPR Studies of {TiIV7TiIII} Complexes

Chemistry – A European Journal, EarlyView.
A new class of heterovalent, homometallic complexes is reported, based on cyclic {TiIV7TiIII} cores with oxide and carboxylate bridges between nearest neighbors. The clusters show Class II mixed‐valent behavior at room temperature, but are valence localized at low temperature.
Selena J. Lockyer, Lubomir Loci, Yingzhao Ma, Matthew P. Stevens, Grigore A. Timco, George F. S. Whitehead, Richard E. P. Winpenny, Alice M. Bowen, Eric J. L. McInnes   +8 more
wiley   +1 more source

Evaluation of Weak Interactions Between the Ring Component and Axle Component in [2]Rotaxanes With 1,3‐Diyne Moiety

Chemistry – A European Journal, EarlyView.
The rotaxane architecture is a powerful tool to probe weak interactions. The interaction between the ring component and the axle components was estimated by quantitative conformational analysis of the rotaxanes by 1H NMR spectroscopy. Theoretical calculations revealed that C─H⋯N interactions and steric effects would be responsible for the preferred ...
Taichi Ohseki, Akira Nagayama, Jun Miyazaki, Yusuke Yoshigoe, Tairin Kawasaki, Shoichi Hosoya, Shinichi Saito   +6 more
wiley   +1 more source

Synthesis of an Insulated Oligo(phenylene ethynylene) Dimer Through Cyclodextrin-Based [c2]Daisy Chain Rotaxane

Molbank
Oligo(phenylene ethynylene)s (OPEs) are π-conjugated systems with promising optical, bioactive, and electrical properties, making them valuable candidates for molecular electronics and biosensors.
Susumu Tsuda, Naoto Yasumura, Shin-ichi Fujiwara, Yutaka Nishiyama   +3 more
doaj   +1 more source

Scaling Up Molecular Electron Spin Qubits Around a Core‐Shell Quantum Dot

Chemistry – A European Journal, EarlyView.
Making assemblies of molecular nanomagnet (MNM) qubits is an essential step toward scalable quantum devices. Here, SH‐functionalized {Cr7Ni} antiferromagnetic rings with ability as MNM qubits were successfully grafted to the surface of fluorescent CdSe/ZnS quantum dots (QD).
Simon G. McAdams, Jesus Ferrando‐Soria, Paul D. McNaughter, Edward A. Lewis, Sarah J. Haigh, David J. Lewis, Richard E. P. Winpenny, Paul O'Brien, Floriana Tuna   +8 more
wiley   +1 more source

Weak functional group interactions revealed through metal-free active template rotaxane synthesis

Nature Communications, 2020
Weak interactions between functional groups are often difficult to characterize in host–guest complexes. Here, the authors report the metal-free active template synthesis of a series of rotaxanes that permit a range of kinetically stabilized, weak crown ...
Chong Tian, Stephen D. P. Fielden, George F. S. Whitehead, Iñigo J. Vitorica-Yrezabal, David A. Leigh   +4 more
doaj   +1 more source

Towards Building Blocks for Supramolecular Architectures Based on Azacryptates

Molecules, 2020
In this work, we report the synthesis of a new bis(tris(2-aminoethyl)amine) azacryptand L with triphenyl spacers. The binding properties of its dicopper complex for aromatic dicarboxylate anions (as TBA salts) were investigated, with the aim to obtain ...
Ana Miljkovic, Sonia La Cognata, Greta Bergamaschi, Mauro Freccero, Antonio Poggi, Valeria Amendola   +5 more
doaj   +1 more source

Diverse reactivity of maleimides in polymer science and beyond

Polymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick, Kristi S Anseth, Tayler S Hebner   +2 more
wiley   +1 more source

Conjugated bis(enaminones) as effective templates for rotaxane assembly and their post-synthetic modifications

Communications Chemistry
The development of efficient methods for the synthesis of mechanically interlocked compounds is currently considered a major challenge in supramolecular chemistry.
Syed S. Razi, Marta Marin-Luna, Mateo Alajarin, Alberto Martinez-Cuezva, Jose Berna   +4 more
doaj   +1 more source

Synthesis of diamido-bridged bis-pillar[5]arenes and tris-pillar[5]arenes for construction of unique [1]rotaxanes and bis-[1]rotaxanes

Beilstein Journal of Organic Chemistry, 2018
The pillar[5]arene mono- and di(oxyalkoxy)benzoic acids were successfully prepared in high yields by sequential alkylation of ω-bromoalkoxy-substituted pillar[5]arenes with methyl or ethyl p-hydroxybenzoate followed by a hydrolytic reaction under basic ...
Ying Han, Li-Ming Xu, Cui-Yun Nie, Shuo Jiang, Jing Sun, Chao-Guo Yan   +5 more
doaj   +1 more source

Understanding the Dynamics of Mechanically Interlocked Molecular Systems via Metadynamics Simulations

The Chemical Record, EarlyView.
This Personal Account discusses how molecular simulations help uncover motion, shuttling mechanisms, and kinetics in mechanically interlocked molecules such as rotaxanes and catenanes. Mechanically interlocked molecules, such as rotaxanes and catenanes, display complex internal dynamics and reciprocal motions that are central to their use as artificial
Clara Sabrià, Luigi Leanza, Massimo Delle Piane, Max von Delius, Ferran Feixas, Xavi Ribas, Giovanni M. Pavan   +6 more
wiley   +1 more source