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An octadentate cyclen-based europium complex with amidic and hydroxyalkyl pendent moieties exhibits pH dependent ligand denticity associated with anion recognition. Unusually high hydration numbers are determined for ortho-phthalate ternary outer-sphere complexes for which modulation of lanthanide-based luminescence is observed.
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http://dx.doi.org/10.1039/c3cc48628a | DOI Listing |
Chempluschem
September 2025
Faculty of Chemistry, University of Warsaw, Pasteura 1, Warsaw, PL 02-093, Poland.
The design, synthesis, and characterization of a series of supramolecular receptors based on electron-deficient aromatic systems capable of engaging in anion-π interactions are reported. Receptors 1 and 3 combine an electron-poor aromatic scaffold with a cation-binding crown ether unit. Binding studies monitored by H NMR titrations in acetonitrile revealed that these receptors exhibit enhanced affinity for bromide anions in the presence of sodium cations, indicating cooperative ion-pair recognition.
View Article and Find Full Text PDFAnal Chim Acta
November 2025
School of Materials Science and Engineering, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, China. Electronic address:
Background: Bisulfite (HSO) plays crucial roles in food safety and physiological health. In the food industry, sulfur dioxide (SO) and its derivative bisulfite (HSO) are extensively employed as preservatives and bleaching agents. Nonetheless, overconsumption of bisulfite can present health hazards like asthma and potentially cancer.
View Article and Find Full Text PDFOrg Biomol Chem
September 2025
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Recent studies on selective anion recognition employing covalent organic cage hosts are reviewed. Cage-like host molecules with convergent anion binding sites (positively charged or neutral moieties), including protonated azacryptands, prism-like cages, tetrahedral cages, and more complex cage structures, are demonstrated. We focus on anion selectivity as described by comparison binding constants between hosts and anions in solution, and examine the factors affecting anion selectivity in terms of multiple and cooperative non-covalent interactions, shape complementarity, and size matching between hosts and anions.
View Article and Find Full Text PDFNat Commun
August 2025
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China.
SLCO2A1 is a member of the organic anion transporting polypeptide (OATP) family, which preferentially transports prostaglandins (PGs) into cells and plays a vital role in regulating PGs inactivation and distribution. Dysregulation or genetic mutation of SLCO2A1 is associated with primary hypertrophic osteoarthropathy (PHO) and chronic enteropathy associated with the SLCO2A1 gene (CEAS). Although the biophysical and biochemical properties of SLCO2A1 have been characterized, the precise mechanism by which SLCO2A1 recognizes and transports PGs remains unclear.
View Article and Find Full Text PDFSensors (Basel)
August 2025
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Due to the frequent occurrence and elevated concentrations of emerging contaminants (ECs) in water environments, as well as their high toxicity, these compounds have become a growing concern, threatening water safety, human health, and environmental health. Stricter regulations and routine monitoring are required to control EC pollution in water. Analytical chemistry-based techniques are the most widely used approach for quantifying ECs in environmental samples.
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