1,4-bis(4-diethylaminobenzyl)-2,3-diaza-1,3-butadiene (dye 1) has been synthesized. Dye 1 behaves as a colorimetric and fluorescent chemosensor for trivalent metal ions (Al3+, Cr3+and Fe3+) in solution. The stoichiometry of the reaction between dye 1 and the trivalent metal ions was determined to be 1:1 by the Method of Continuous Variation. The limit of detection for Al3+, Cr3+and Fe3, were determined to be 0.117 μM , 1.28 μM , and 0.106 μM for absorbance, and 0.505 μM , 0.469 μM and 0.749 μM for fluorescence, respectively.The binding constants for Cr3+for fluorescence was determined to be 3.9x105. Fe3+, Cr3+and Al3+. Binding constants for absorbance were determined to be 2.5x104, 4.5x104, and 6.9x104, respectively, using the Benesi-Hildebrand expression.

Synthesis of a fluorescent and colorimteric chemosensor for the detection of trivalent cations

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.