Azathia crown ethers carrying pyrene pendant as receptor molecules for metal sensor systems
Küçük Resim Yok
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A series of crown ethers carrying a pyrene group with nitrogensulfur donor atoms, that differ in having three, four and five sulfur atoms in the macrocycle was designed and synthesized by the reaction of the corresponding macrocyclic compound and 1-bromomethylpyrene. The influence of metal cations such as Mn 2+, Fe2+, Fe3+, Co2+, Ni 2+, Cu2+, Zn2+, Cd2+, Hg 2+, Pb2+ and Al3+ on the spectroscopic properties of the ligands was investigated in acetonitriledichloromethane (1:1) by means of absorption and emission spectrometry. Absorption spectra show isosbestic points in the spectrophotometric titration of Fe2+, Zn2+, Cu2+, Pb2+ and Hg2+. The results of spectrophotometric titration experiments disclosed the complexation compositions and complex stability constants of the novel ligands with Fe 2+, Zn2+, Cu2+, Pb2+ and Hg 2+ cations. The monoazatetrathia crown ether showed good sensitivity for Cu2+ with linearity in the range 5.0×10-72. 5×10-6 M and detection limit of 1.6×10-8 M. © 2010 Elsevier B.V.
Açıklama
Anahtar Kelimeler
1-Bromomethyl-pyrene, Azathia donor atom, Crown ether, Cu2+ cation, Fluorescence spectroscopy, Stability constant, 1-Bromomethyl-pyrene, Acetonitrile-dichloromethane, Complex stability, Cu<sup>2+</sup> cation, Detection limits, Donor atoms, Emission spectrometry, Isosbestic point, Macrocycles, Macrocyclic compounds, Metal cation, Nitrogen-Sulfur, Novel ligands, Sensor systems, Spectrophotometric titrations, Spectroscopic property, Stability constant, Sulfur atoms, Absorption, Absorption spectroscopy, Atoms, Crown ethers, Ethers, Fluorescence, Fluorescence spectroscopy, Manganese, Mercury (metal), Organic compounds, Positive ions, Spectrophotometers, Spectrophotometry, Sulfur, Titration, Zinc, Ligands, 1-Bromomethyl-pyrene, Azathia donor atom, Crown ether, Cu2+ cation, Fluorescence spectroscopy, Stability constant, 1-Bromomethyl-pyrene, Acetonitrile-dichloromethane, Complex stability, Cu<sup>2+</sup> cation, Detection limits, Donor atoms, Emission spectrometry, Isosbestic point, Macrocycles, Macrocyclic compounds, Metal cation, Nitrogen-Sulfur, Novel ligands, Sensor systems, Spectrophotometric titrations, Spectroscopic property, Stability constant, Sulfur atoms, Absorption, Absorption spectroscopy, Atoms, Crown ethers, Ethers, Fluorescence, Fluorescence spectroscopy, Manganese, Mercury (metal), Organic compounds, Positive ions, Spectrophotometers, Spectrophotometry, Sulfur, Titration, Zinc, Ligands
Kaynak
Journal of Luminescence
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
131
Sayı
4
