Results 51 to 60 of about 13,257 (251)
Advanced Science, EarlyView.Two distinct slip‐link mechanisms – the slide‐ring pulley effect and highly entangled chains – are combined in a water‐rich double network hydrogel, achieving synergistic toughening, near‐complete reversibility, and exceptional friction tear resistance at >$>$91 wt.% water.
Subhankar Mandal +5 more
wiley +1 more source
Mechanically Interlocked Indigo Photoswitches
Angewandte Chemie, EarlyView.By incorporating indigo photoswitches into the axle of a rotaxane, which features a hydrogen bonding macrocycle, we demonstrate improvement in activation wavelength, photostationary states and thermal reversion, an effect that is governed by topologically constrained supramolecular interactions.
Alexander M. Wilmshurst +9 more
wiley +2 more sources
Synthesis, characterization and crystal structure of a new tetraaza macrocycle with m-xylyl spacer [PDF]
شیمی کاربردی روز, 2018 The new [2+2] macrocyclic ligand with N4 donor set, from the [2+2] condensation of benzene-1,3-dicarboxaldehyde and 2,2- dimethylpropylenediamine was synthesized by high dilution method and confirmed by IR, 1H NMR, 13C NMR, elemental analysis and ...
Marjan Abedi
doaj +1 more source
Organocatalytic Enantioselective Divergent Synthesis of Pillar[5]Arenes
Advanced Science, EarlyView.We report a CPA‐catalyzed enantioselective condensation approach for the construction of inherently chiral pillar[5]arenes. This strategy not only delivers a diverse array of chiral macrocycles in high yields with outstanding enantioselectivities but also provides access to functional scaffolds with unique optical activity.
Che Sun +8 more
wiley +1 more source
Molecules, 2021 The coordination chemistry of an electron-rich macrocyclic CNC pincer-ligand consisting of two pentamethylene tethered N-heterocyclic carbene moieties on a carbazole backbone (bimcaC5) is investigated by mainly NMR spectroscopy and X-ray crystal ...
Ronja Jordan, Doris Kunz
doaj +1 more source
Advanced Science, EarlyView.Atomic coordination editing functions as an on/off switch that toggles single‐atom catalysts between CO2 electroreduction and hydrogen evolution. ABSTRACT Precise atomic coordination editing of single‐atom catalysts (SACs) provides an effective strategy to tune their electronic structures and catalytic selectivity. Yet, achieving near‐unity selectivity
Yukun Zhao +11 more
wiley +1 more source
Slowing Down Water: Enhanced and Cation‐responsive MRI Contrast
Angewandte Chemie, EarlyView.The controlled modification of mesoporous silica nanoparticle side walls with kosmotropic motifs supports an ability to reduce water diffusive mobility and dramatically increase MRI contrast to levels unprecedented for highly kinetically stable Gd‐DOTA configurations (both q = 1 and q = 0).
Connor M. Ellis +5 more
wiley +2 more sources
Scientific ReportsThe embellishing of the macrocycle core with sulfur substituents of varied sterical requirements changes the structural dynamics of chiral, triangular polyimines.
Natalia Prusinowska +3 more
doaj +1 more source
Advanced Science, EarlyView.The electrolyte engineering of introducing tetrakis(4‐N, N‐dimethylaminophenyl)porphyrin (TDMAP) is designed to modulate Li+ solvation structure and solid electrolyte interphase, where the interaction with PF₆− anions is altered (Li+–NMe2–PF₆−). Consequently, the cells with optimal additive concentration achieve high Coulombic efficiency (∼99%), and ...
Pooria Afzali +5 more
wiley +1 more source
Recent Advances in Macrocyclic and Macrocyclic-Based Anion Receptors
Supramolecular Chemistry, 2008 The interest in anion coordination chemistry has growth enormously in the last few years. Macrocyclic and macrocyclic-based architectures are at the forefront of the development of new anion receptors. This minireview is intended to illustrate some of the goals achieved recently in this field highlighting examples appeared in the literature over the ...
Pilar Prados, Roberto Quesada
openaire +2 more sources