title: Highly sensitive ratiometric chemosensor for selective 'naked-eye' nanomolar detection of Co(2+) in semi-aqueous media.
abstract: An easy-to-prepare chemosensor, (E)-1-(phthalazine-4-yl)-2-(1-(pyridine-2-yl)ethylidene) hydrazine (3), structurally characterized by single X-ray crystallography, is developed for the selective and sensitive detection of Co(2+) in aqueous media. Chemosensor 3 shows both absorption and fluorescence responses to Co(2+) by forming a 1:1 complex (among the surveyed metal ions) with a detection limit down to 50 nM. It can also be used as a 'naked-eye' sensor due to the outstanding visible and emission color changes from yellow to red and blue to orange, respectively.
authors.affiliation: School of Chemical Sciences, North Maharashtra University, Jalgaon, 425001 (MS) (India).
authors.forename: Smita
authors.initials: S
authors.lastname: Patil
authors.forename: Umesh
authors.initials: U
authors.lastname: Fegade
authors.forename: Suban K
authors.initials: SK
authors.lastname: Sahoo
authors.forename: Amanpreet
authors.initials: A
authors.lastname: Singh
authors.forename: Jaromir
authors.initials: J
authors.lastname: Marek
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: D003035:Cobalt / Q000737:chemistry*; D018360:Crystallography, X-Ray / Q000379:methods; D005456:Fluorescent Dyes / Q000737:chemistry; D007477:Ions / Q000737:chemistry*; D057230:Limit of Detection; D008670:Metals / Q000737:chemistry*; D012680:Sensitivity and Specificity; D014867:Water / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D007477:Ions; D008670:Metals; D014867:Water; D003035:Cobalt
keywords: analytical chemistry; aqueous media; chemosensors; cobalt; nanomolar detection