A developed chromogenic probe for determination of dual analyte with logic gates function and keypad-lock. Issue 4 (16th March 2021)

• Record Type: Journal Article
• Authors: Tavallali, Hossein; Deilamy-Rad, Gohar; Parhami, Abolfath; Heidari, Maryam; Mosllanejad, Narges
• Is Part Of: International journal of environmental analytical chemistry. Volume 101:Issue 4(2021)
• Page Start: 433
• Page End: 449
• Publication Date: 2021-03-16
• Subjects: Naked-eye detection -- Eriochrome Black T -- nickel -- cyanide -- molecular keypad lock; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2019.1667990
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: In the current study, a novel and facile selective colorimetric approach was developed by Eriochrome Black T (EBT) for naked-eye detection and determination of nickel (Ni 2+ ) and cyanide (CN − ) ions in H2 O/DMSO (9:1, v/v) media. The chemosensing behaviour of EBT has been indicated through UV-Vis absorbance spectra, visual colour changes, and FTIR spectra. First, EBT could selectively identify Ni 2+ over other competitive cation in 90% aqueous media and then, the resulting EBT-Ni 2+ complex was successfully applied for selective colorimetric recognition of CN − based on azo-hydrazone tautomeric skeletons. The detection limit of EBT towards Ni 2+ and CN − were calculated to be 0.06 µmol L −1 and 0.15 µmol L −1, respectively. These consequences represent an innovative type of nimble chemosensor for manifold target ions using simple colorimetric and sequential detection. When operated by chemical ions Ni 2+ and CN − can act as an absorbance switch, distinguishing a multi-addressable system. In addition, INVERTER (INV) and INHIBIT (INH) logic gates at different wavelengths and a keypad lock were created by applying chemical ions Ni 2+ and CN − as two inputs and an absorption mode at 541 nm as an output on the basis of suitable chemical stimuli.