Abstract
The inclusion complexation of 2-aminobenzoic acid (2ABA), 3-aminobenzoic acid (3ABA), and 4-aminobenzoic acid (4ABA) with α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), hydroxypropyl-α-cyclodextrin (HP-α-CD) and hydroxypropyl-β-cyclodextrin (HP-β-CD) were studied in buffer solutions of different pHs (pH~1 and pH~7) and it was carried out using UV-Visible, steady-state and time-resolved fluorescence. Dual fluorescence was observed for all the compounds in aqueous and CD medium. All the ABAs forms 1:1 inclusion complex at pH ~ 1 solution and mixture of 1:1 and 1:2 inclusion complex at pH ~7. With CDs, dual luminescence appeared at pH ~ 1 indicates, both NH3+ and COOH groups are present in the interior of the CDs cavities. FT-IR, 1H NMR, results suggest ABAs formed a stable inclusion complex with the CDs.
Publisher
AOA Academic Open Access Ltd.
Subject
Psychiatry and Mental health,Neuropsychology and Physiological Psychology
Reference24 articles.
1. L. Doub, J.M. Vandenbelt, The Ultraviolet Absorption Spectra of Simple Unsaturated Compounds. I. Mono- and p-Disubstituted Benzene Derivatives, J. Am. Chem. Soc. 69 (1947) 2714-2723.
2. V.G. Plotnikov, V.M. Komarov, Theoretical Interpretation of Luminescent Properties of Nitroanilines, Spectrosc. Lett. 9 (1976) 265-278.
3. T.N. Kopylova, Study of the adsorption of organic substances on platinum by the impedance measurement method, Zh. Fiz. Khim. 51 (1977) 1601-1609.
4. N. Mataga, Solvent Effects on the Absorption and Fluorescence Spectra of Naphthylamines and Isomeric Aminobenzoic Acids Bull. Chem. Soc. Jpn. 36 (1963) 654.
5. A. Tramer, Tautomeric and protolytic properties of o-aminobenzoic acids in their lowest singlet and triplet states, J. Phys. Chem. 74 (1970) 887-894.
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