Researchers from the University of Tsukuba, Osaka University, and Kitasato University have developed an innovative amide cyclodextrin, a cyclic oligosaccharide, capable of selectively capturing phosphate ions in water. This novel molecule achieves precise molecular recognition through hydrogen bonding that works harmoniously with water molecules, overcoming the usual challenges posed by water’s competition for bonding sites. Using advanced techniques like NMR spectroscopy, isothermal titration thermometry, and molecular dynamics simulations, the team elucidated the mechanism behind this selectivity. Their findings pave the way for designing cyclic molecules optimized for aqueous environments, with significant implications for drug development, environmental analysis, and other applications reliant on molecular recognition.
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