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- W2017035125 endingPage "579" @default.
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- W2017035125 abstract "Two water-soluble naphthalene-based fluorescent boronic acid isomers, 5-(dimethylamino)naphthalene-1-boronic acid (5-DMANBA, 1) and 4-(dimethylamino)naphthalene-1-boronic acid (4-DMANBA, 2), have been synthesized; their fluorescent properties upon binding with carbohydrates have been determined in aqueous phosphate buffer at pH 7.4. The difference in substitution pattern between 1 and 2 leads to significant differences in their fluorescence properties. For example, addition of fructose (50 mM) to a solution of 1 induced a 61% fluorescence intensity decrease at 513 nm and a 36-fold increase at 433 nm. This revealed that compound 1 is a potential sensor for ratiometric sensing of sugars. The pH titration curves of 1 in the absence and the presence of fructose (50 mM) showed a 93- and 200-fold fluorescence intensity increase at 433 nm, respectively, when pH was increased from 3 to 10. Compound 2, however, does not show ratiometric fluorescent intensity changes, but shows significant fluorescence intensity increase upon addition of a sugar (41-fold intensity increase with 50 mM fructose). The emission intensity of 2 increased by over 170-fold at 445 nm upon changing the pH from 2 to 11." @default.
- W2017035125 created "2016-06-24" @default.
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- W2017035125 date "2005-01-01" @default.
- W2017035125 modified "2023-10-16" @default.
- W2017035125 title "Naphthalene-based water-soluble fluorescent boronic acid isomers suitable for ratiometric and off-on sensing of saccharides at physiological pH" @default.
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- W2017035125 doi "https://doi.org/10.1039/b413376e" @default.
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