title: Copper(II) complexes as turn on fluorescent sensors for nitric oxide.
abstract: Two copper(II) complexes, 1 and 2, of two tridentate N-donor ligands, L(1) and L(2) [L(1) = dansyl derivative of bis-[3-(dimethylamino)-propyl]amine; L(2) = dansyl derivative of dipropylenetriamine] were synthesized and characterized. The quenched fluorescence intensity of complexes 1 and 2, in degassed methanol or aqueous (buffered at pH 7.2) solution, was found to reappear on exposure to nitric oxide. This is attributed to the reduction of paramagnetic Cu(II) center by nitric oxide to diamagnetic Cu(I).
authors: Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
authors: Pankaj
authors: P
authors: Kumar
authors: Apurba
authors: A
authors: Kalita
authors: Biplab
authors: B
authors: Mondal
mesh_terms: D002021:Buffers; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry; D008024:Ligands; D000432:Methanol / Q000737:chemistry; D009569:Nitric Oxide / Q000032:analysis*; D010084:Oxidation-Reduction; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry
chemical_list: D002021:Buffers; D056831:Coordination Complexes; D005456:Fluorescent Dyes; D008024:Ligands; D014867:Water; D009569:Nitric Oxide; D003300:Copper; D000432:Methanol