title: Pyrazolone as a recognition site: Rhodamine 6G-based fluorescent probe for the selective recognition of Fe3+ in acetonitrile-aqueous solution.
abstract: Two novel Rhodamine-pyrazolone-based colorimetric off-on fluorescent chemosensors for Fe(3+) ions were designed and synthesized using pyrazolone as the recognition moiety and Rhodamine 6G as the signalling moiety. The photophysical properties and Fe(3+) -binding properties of sensors L(1) and L(2) in acetonitrile-aqueous solution were also investigated. Both sensors successfully exhibit a remarkably 'turn-on' response, toward Fe(3+) , which was attributed to 1: 2 complex formation between Fe(3+) and L(1) /L(2) . The fluorescent and colorimetric response to Fe(3+) can be detected by the naked eye, which provides a facile method for the visual detection of Fe(3+) .
authors.affiliation: Department of Chemistry, The M. S. University of Baroda, Vadodara, 390002, India.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Parihar
authors.forename: Vinod P
authors.initials: VP
authors.lastname: Boricha
authors.forename: R N
authors.initials: RN
authors.lastname: Jadeja
mesh_terms: D000097:Acetonitriles / Q000737:chemistry*; D005290:Ferric Compounds / Q000032:analysis*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D047069:Pyrazolones / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry*; D012996:Solutions; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry
chemical_list: D000097:Acetonitriles; D005290:Ferric Compounds; D005456:Fluorescent Dyes; D047069:Pyrazolones; D012235:Rhodamines; D012996:Solutions; C026188:rhodamine 6G; D014867:Water; C038362:pyrazolone; C032159:acetonitrile
keywords: Job plot; Rhodamine; fluorescence; ion recognition; pyrazolone