Abstract
Condensation product ( L ) of 5-bromosalicylaldehyde and aminophenol has been synthesised and characterised. Fluorescence of L enhances by 23 times on interaction with Ce 3+ while it is quenched completely by Ce 4+ . Ascorbic acid (AA) is a well known strong reducing agent and this property has been used to act L :Ce 4+ adduct as a fluorescence “on” sensor for AA. AA reduces Ce 4+ into Ce 3+ and thereby increasing fluorescence of L due to the formation of L :Ce 3+ adduct. Molecules which generally coexist with AA viz. Cholesterol, Glucose, Sucrose and Dopamine found not to interfere. The interaction of L with Ce 3+ , Ce 4+ and subsequently with AA has been verified with cyclic voltammetry.
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