Elmas Karuk, Şükriye NihanÖzen, FurkanKoran, KenanYılmaz, İbrahimGörgülü, Ahmet OrhanErdemir, Serkan2019-12-062019-12-062017Karuk, E. S. N., Yılmaz, I., Özen, F., Koran, K., Görgülü, A. O., Yılmaz, I., & Erdemir, S. (2017). Coumarin based highly selective "off-on-off" type novel fluorescent sensor for Cu2+ and S2- in aqueous solution. Journal of Fluorescence, 27, 2, 463-471.1053-05091573-4994https://dx.doi.org/10.1007/s10895-016-1972-3https://hdl.handle.net/11492/2799WOS:000395070900008PubMed:27995460Solvent free synthesis of 6,7-dihydroxy-3-(3-chlorophenyl) coumarin (CFHC) was designed and obtained by the interaction of 2-(2,4,5-trimethoxyphenyl)-1-(3-chlorophenyl)acrylonitrile with pyridinium hydrochloride in the presence of silica gel by using microwave irradiation. The characterization of CFHC was confirmed by FT-IR, H-1, C-13, C-13-APT and 2D HETCOR spectroscopy methods. The optical behavior of CFHC towards metal ions was investigated by UV-visible and fluorescence spectroscopy. CFHC showed "on-off" type fluorescence response towards Cu2+ with high selectivity in aqueous solution (CH3CN/H2O, 9/1, v/v). Once binding with Cu2+, CFHC-Cu2+ complex also displayed high selectivity for sulfide, resulting in "off-on" type sensing of sulfide anion.enCoumarinFluorescentSensorCopperSulfideArticle272463471info:eu-repo/semantics/openAccess2-s2.0-85006371147WOS:0003950709000082799546010.1007/s10895-016-1972-3Q3Q3