Obali, Aslihan YilmazYilmaz, Menzeher SerkanUcan, Halil Ismet2020-03-262020-03-2620170022-28601872-8014https://dx.doi.org/10.1016/j.molstruc.2017.05.047https://hdl.handle.net/20.500.12395/34972Novel quinoline-tethered fluorescent probe was designed and synthesized as multidentate ligand. Their sensing actions were confirmed by UV-Vis absorbance and emission spectroscopic studies in presence of perchlorate salts of Co2+, Li+, Fe2+, K+, Pb2+, Cu2+, Zn2+, Ni2+, Hg2+, Ag+ cations in acetonitrile (1 x 10(-5) M for absorption studies, 1 x 10(-7) M for fluorescence studies). It was found that the dipodal compounds can selectively bind to Cu2+ and Ag+ metal ions with a significant quenching in their emissions. The capture of Cu2+ and Ag+ by the probe resulted in deprotonation of the secondary amine conjugated to the quinoline-tethered probe, so that the electron-donation ability of the 'N' atom would be greatly enhanced and the probe (2) showed blue-shift in emission and exhibited an on-off fluorescent response. The binding study was explored by using fluorescence spectroscopy with Job plot method. (C) 2017 Elsevier B.V. All rights reserved.en10.1016/j.molstruc.2017.05.047info:eu-repo/semantics/closedAccessDipodalFluorescenceProbeSilverCopperCationArticle1145192196Q2WOS:000404491700021Q3