Histidine–dialkoxyanthracene dyad for selective and sensitive detection of mercury ions. Issue 4 (3rd April 2018)

• Record Type: Journal Article
• Authors: Patil, Sachin; Belhajjame, Widad; Moosa, Basem; Khashab, Niveen M.
• Is Part Of: Supramolecular chemistry. Volume 30:Issue 4(2018)
• Page Start: 345
• Page End: 350
• Publication Date: 2018-04-03
• Subjects: Fluorescent probe -- mercury ions -- anthracene -- histidine; Macromolecules -- Periodicals; Supramolecular chemistry -- Periodicals; 547.005
• DOI: 10.1080/10610278.2017.1412438
• Languages: English
• ISSNs: 1061-0278

Abstract

Abstract: Histidine-dialkoxyanthracene (HDA) was synthesised as a turn off type fluorescent sensor for fast and sensitive detection of mercury ions (Hg 2+ ) in aqueous media. The two histidine moieties act as 'claws' to selectively complex Hg 2+ . The binding ratio of HDA to Hg 2+ was 1:1 (metal-to-ligand ratio). The association constant for Hg 2+ towards the receptor HDA obtained from Benesi–Hildebrand plot was found to be 3.22 × 10 4 M −1 with detection limit as low as 4.7 nM (0.94 μg/L). Abstract :