A highly enantioselective chiral Schiff-base fluorescent sensor for mandelic acid |
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| Authors: | Koushik Dhara Partha Roy Asim Bhaumik |
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| Institution: | a Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
b Department of Materials Science and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India |
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| Abstract: | A chiral Schiff-base compound, 4-methyl-2,6-bis-(2-hydroxy-1-phenylethylimino)methyl]phenol, is found to act as highly enantioselective fluorescent agent for α-hydroxycarboxylic acid, e.g., mandelic acid. It is observed that, within a certain concentration range, one enantiomer of the chiral acid can increase the fluorescence intensity of the Schiff-base compound 122-fold while the other enantiomer enhances the intensity only 42-fold. Such highly enantioselective responses towards the chiral acid make the unusual Schiff-base compound attractive as a fluorescent sensor for determining the enantiomeric composition of α-hydroxycarboxylic acids. |
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| Keywords: | Chiral Schiff-base α-Hydroxycarboxylic acid Enantioselective Fluorescent sensor |
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