title: Fluorescence Chemosensor for HSO4 (-) Ion Based on Pyrrole-Substituted Salicylimine Zn (2+) Complex: Nanomolar Detection.
abstract: A novel pyrrole-substituted salicylimine zinc (II) ion complex has been synthesized and evaluated its anion binding affinity. The probe 4 has high selectivity for HSO4 (-) over other anions in CH3OH:H2O (70:30, v/v) solvent system. The emission intensity of 4 was quenched upon addition of HSO4 (-). The probe 4 is highly selective for HSO4 (-) with a detection limit of 40 nm. Photoinduced electron transfer (PET) is responsible for observed change. The binding affinity of 4 for HSO4 (-) was further authenticated through ratiometric change in absorbance profile.
authors.affiliation: School of Chemical Sciences, North Maharashtra University, Jalgaon, MS, 425001, India.
authors.forename: Umesh
authors.initials: U
authors.lastname: Fegade
authors.forename: Jitendra
authors.initials: J
authors.lastname: Bhosale
authors.forename: Hemant
authors.initials: H
authors.lastname: Sharma
authors.forename: Narinder
authors.initials: N
authors.lastname: Singh
authors.forename: Ratnamala
authors.initials: R
authors.lastname: Bendre
authors.forename: Anil
authors.initials: A
authors.lastname: Kuwar
mesh_terms: D015374:Biosensing Techniques; D005456:Fluorescent Dyes / Q000737:chemistry*; D007097:Imines / Q000737:chemistry*; D057230:Limit of Detection; D036103:Nanotechnology / Q000379:methods*; D011758:Pyrroles / Q000737:chemistry*; D020156:Salicylic Acid / Q000737:chemistry*; D012997:Solvents; D013050:Spectrometry, Fluorescence / Q000379:methods; D013431:Sulfates / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D007097:Imines; D011758:Pyrroles; D012997:Solvents; D013431:Sulfates; D015032:Zinc; D020156:Salicylic Acid