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- W2005362803 abstract "Abstract The boronic acid-amine (B-N) interaction was applied to the molecular design of a visualized sensing system for saccharides. 3-Nitrophenyl-boronic acid (3b) interacts with the pyridine nitrogen of 4-(4-dimethyl-aminophenyl-azo) pyridine (2) in methanol and changes its color from yellow to orange. Added saccharides form complexes with 3b and enhance the acidity of the boronic acid group. As a result, the B-N interaction becomes stronger and the intensified intramolecular charge-transfer band changes the solution color to red. By combined 1H-NMR and absorption spectroscopic studies, four association constants governing the present ternary complex system have been determined. In case of D-fructose, the 3b·D-fructose complex can interact with 2 240 times more strongly than 3b and the 2·3b complex can associate D-fructose 241 times more strongly than 3b. Clearly, the B-N interaction not only enables the colorimetric saccharide sensing but also enhances the association ability (i.e., sensitivity). Thus, the present paper offers a novel basic concept for molecular design of visualized saccharide sensing systems." @default.
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- W2005362803 date "1998-08-01" @default.
- W2005362803 modified "2023-10-09" @default.
- W2005362803 title "Design of a Visualized Sugar Sensing System Utilizing a Boronic Acid-azopyridine Interaction" @default.
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- W2005362803 doi "https://doi.org/10.1080/10610279808034988" @default.
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