Results 61 to 70 of about 430,530 (226)
Advanced Science, EarlyView.A tailored tripartite supramolecular ratiometric probe, engineered by modulating the fluorogenic guest's cationic locus, enables ultrafast histamine monitoring in living cells. Utilizing a competitive displacement mechanism, this system achieves a sub‐second response time with high selectivity.
Chenming Chan +4 more
wiley +1 more source
Pharmaceutics, 2022 Cyclodextrins (CDs) are a family of cyclic oligosaccharides, consisting of a macrocyclic ring of glucose subunits linked by α-1,4 glycosidic bonds. The shape of CD molecules is similar to a truncated cone with a hydrophobic inner cavity and a hydrophilic
Dariusz Boczar, Katarzyna Michalska
doaj +1 more source
Tuning the Chiral Cavity of Macrocyclic Receptor for Chiral Recognition and Discrimination
, 2016 The size and shape of the chiral cavity of a macrocyclic receptor were tuned by the alteration of the binaphthyl moiety to improve the chiral recognition/discrimination ability. For example, host 3 with the 3,5-bis(trifluoromethyl)phenyl group at the 3,3′
Tadashi Ema (1581424) +3 more
core +1 more source
Advanced Science, EarlyView.The study integrates density functional theory with radiochemical and biological validation to compare DOTA‐, PSC‐, and DOTAM‐based chelator‐conjugates for 203Pb/212Pb theranostic applications. Distinct differences in metal coordination, electrostatic properties, conformational flexibility, cellular uptake, biodistribution, and dosimetry are identified
Jeongyun Kim +12 more
wiley +1 more source
Tetrakis(imidazolium) macrocyclic receptors for anion binding.
, 2016 New (tetrakis)imidazolium macrocyclic receptor systems of variable cavity size have been synthesised by stepwise alkylation reactions of bis(imidazolium) precursor compounds. Proton NMR titration studies reveal the macrocycles to strongly bind halide and
core +1 more source
Acta Crystallographica Section E, 2010 The macrocycle of the title compound, C36H24N4O3S·2CHCl3, contains a rigid framework with the nitrogen and oxygen heteroatoms pointing in towards the center of the macrocyclic cavity. The macrocycle is essentially planar (r.m.s.
Victor N. Khrustalev +4 more
doaj +1 more source
Synthesis, Structure, and Characterization of Thiacalix[4]-2,8-thianthrene
Molecules, 2023 Sulfur-containing macrocycles have attracted substantial interest because they exhibit unique characteristics due to their polygonal ring-shaped skeleton.
Masafumi Ueda +2 more
doaj +1 more source
The effect of pressure and substituents on the size of pseudo-macrocyclic cavities in salicylaldoxime ligands [PDF]
CrystEngComm, 2008 The effect of pressure on the crystal structures of 3-chloro-, 3-methoxy-, 3-methyl- and 3-tert-butylsalicylaldoximes has been investigated. The compounds all form the dimeric structure found in salicylaldoxime form I at ambient pressure, which is based on intermolecular hydrogen bonds between the oximic hydrogen and the phenolic oxygen atoms across an
Wood, Peter A. +6 more
openaire +4 more sources
Acta Crystallographica Section E: Crystallographic Communications, 2020 The synthesis and crystal structure of the title compound [systematic name: di-μ-acetato-tetrakis(μ4-N,2-dioxidobenzene-1-carboximidato)hexamethanoltetramanganese(III)nickel(II) methanol disolvate monohydrate], [Mn4Ni(C7H4NO3)4(C2H3O2)2(CH4O)6]·2CH4O·H2O
Abigail J. Hall +2 more
doaj +1 more source
Evaluation of Weak Interactions Between the Ring Component and Axle Component in [2]Rotaxanes With 1,3-Diyne Moiety. [PDF]
ChemistryThe 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 ...
Ohseki T +6 more
europepmc +2 more sources