Home
Resources
Publications
Coumarin Based Highly Selective "off-on-off" Type Novel Fluorescent Sensor for Cu 2+ and S 2- in Aqueous Solution

Coumarin Based Highly Selective "off-on-off" Type Novel Fluorescent Sensor for Cu 2+ and S 2- in Aqueous Solution

Şükriye Nihan Karuk Elmas, Furkan Ozen, Kenan Koran, Ibrahim Yilmaz, Ahmet Orhan Gorgulu, Serkan Erdemir

J Fluoresc. 2017 Mar;27(2):463-471.

PMID: 27995460

Abstract:

Solvent 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, 1H, 13C, 13C-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. Graphical abstract Visual fluorescence changes upon addition of various metal ions (5.0 eq.) to CFHC in CH3CN/H2O (90:10, v/v) under UV excitation (365 nm).

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LPLC81108	Silica gel 90 CN			Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: