Matches in SemOpenAlex for { <https://semopenalex.org/work/W2043285563> ?p ?o ?g. }
- W2043285563 endingPage "3857" @default.
- W2043285563 startingPage "3846" @default.
- W2043285563 abstract "New host molecules for anions, adamantane, and alkyl urea derivatives substituted by naphthalene chromophores, were synthesized. Their binding with F−, Cl−, Br−, OAc−, HSO4−, NO3−, and H2PO4− was investigated by UV–vis, fluorescence and NMR spectroscopy. The anion binding ability of adamantyl bisurea derivatives was compared with the analogous host molecules, wherein the urea moieties are separated by flexible alkyl linkers of the same length, and adamantane monourea derivative. The host molecules show the highest selectivity toward F− and H2PO4−. The binding stoichiometry and the values of the association constants depend on the basicity of anions, availability of H-bonding sites, preorganization, and rigidity of the hosts, as well as solvent polarity and H-bonding availability. Rigid adamantane receptors, compared to flexible analogues show increased selectivity for H2PO4−, whereas binding of OAc− is better with flexible receptors. The binding of OAc− and H2PO4− was investigated by microcalorimetry. The stoichiometries and the stability constants of the corresponding complexes obtained by this method were in good agreement compared to those determined by UV–vis titrations. In both cases the enthalpic contribution to the overall complex stability was predominant." @default.
- W2043285563 created "2016-06-24" @default.
- W2043285563 creator A5012230297 @default.
- W2043285563 creator A5018495485 @default.
- W2043285563 creator A5073019646 @default.
- W2043285563 creator A5085433318 @default.
- W2043285563 date "2011-05-01" @default.
- W2043285563 modified "2023-10-16" @default.
- W2043285563 title "Phosphate selective alkylenebisurea receptors: structure-binding relationship" @default.
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