title: Salicylaldehyde phenylhydrazone: a new highly selective fluorescent lead (II) probe.
abstract: The fluorescence intensity of salicylaldehyde phenylhydrazone (L), in 1:1 (v/v) CH3OH:H2O was enhanced by ca. 100 times with a blue shift in emission maximum, on interaction with Pb(2+) ion. No enhancement in fluorescent intensity of L was observed on interaction with metal ions - Na(+), K(+), Ca(2+), Cu(2+), Ni(2+), Zn(2+), Cd(2+) and Hg(2+). This signal transduction was found to occur via photoinduced electron transfer (PET) mechanism. A 1:1 complexation between Pb(2+) and L with log β = 7.86 has been proved from fluorescent and UV/Visible spectroscopic data. The detection limit of Pb(2+) was calculated to be 6.3 × 10(-7) M.
authors: Department of Chemistry, Gauhati University, Guwahati, Assam, India. digkdas@yahoo.com
authors: Diganta Kumar
authors: DK
authors: Das
authors: Priyanka
authors: P
authors: Goswami
authors: Smita
authors: S
authors: Sarma
mesh_terms: D005456:Fluorescent Dyes / Q000737:chemistry*; D006835:Hydrazones / Q000737:chemistry*; D007854:Lead / Q000032:analysis* / Q000737:chemistry; D057230:Limit of Detection; D010636:Phenols / Q000737:chemistry*; D017785:Photons; D013050:Spectrometry, Fluorescence
chemical_list: D005456:Fluorescent Dyes; D006835:Hydrazones; D010636:Phenols; C012483:phenylhydrazone; C584937:salicylaldehyde phenylhydrazone; D007854:Lead