A simple urea-based multianalyte and multichannel chemosensor for the selective detection of F−, Hg2+ and Cu2+ in solution and cells and the extraction of Hg2+ and Cu2+ from real water sources: a logic gate mimic ensemble. Issue 13 (13th March 2019)

• Record Type: Journal Article
• Authors: Mondal, Amita; Roy Chowdhury, Additi; Bhuyan, Samuzal; Mukhopadhyay, Subhra Kanti; Banerjee, Priyabrata
• Is Part Of: Dalton transactions. Volume 48:Issue 13(2019)
• Page Start: 4375
• Page End: 4386
• Publication Date: 2019-03-13
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt05097j
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Herein, a hydrazine-based chromogenic, fluorogenic and electrochemical chemosensorBCC [1, 5-bis(4-cyanophenyl) carbonohydrazide] was reported. Abstract : Herein, a hydrazine-based chromogenic, fluorogenic and electrochemical chemosensorBCC [1, 5-bis(4-cyanophenyl) carbonohydrazide] was premeditated and synthesized through a simple one-step synthetic procedure for the selective detection of toxic anions, such as F −, in a DMSO–ACN medium and cations, such as Hg 2+ and Cu 2+, in a MeOH–water medium. The detection limit for F − was reckoned to be 0.5 ppm, and for Hg 2+ and Cu 2+, it was 0.8 ppm and 50 nM, respectively. The chemosensor exhibited a distinct change in colour from colourless to dark blue in the presence of F −, and upon the addition of Hg 2+ and Cu 2+, theBCC turned from colourless to light blue and purple accordingly. Moreover, turn-on fluorescence response transpired by the attenuation of PET signified the selective sensing of analytes with a zero-order rate constant. Sophisticated analytical experiments, such as ESI-MS, UV-Vis, photoluminescence, cyclic voltammetry, FTIR, and 1 H-NMR, along with the theoretical calculations corroborated the probable sensing pathways. The reversible colorimetric response ofBCC towards F − and H + can be advantageous in the design of electronic circuits derived from Boolean algebra. The complexation ability of the sensor with toxic Hg 2+ - and Cu 2+ -like ions made it an efficient material to remove these metal ions from real water sources polluted with these toxic elemental ions. Furthermore, the in vitro studies were accomplished using the Bauhinia acuminate pollen cell to check the cell penetrability of the sensor molecule.