Use of squarylium dyes as a sensing molecule in optical sensors for the detection of metal ions

Authors :: Sang Hyun Park
Sang-Min Lee
Sung-Hoon Kim
Su-mi Lee
Shin Won Kang
Sun Kyung Han
Kwang Nak Koh
Source :: Dyes and Pigments. 41:221-226
Publication Year :: 1999
Publisher :: Elsevier BV, 1999.
Abstract: The complex formation of squarylium (SQ) and dithiosquarylium (DTSQ) dyes with Cu2+ and Ag+ was investigated spectrophotometrically. Their absorption spectra showed cation selective spectral intensity changes in the presence of specific metal ions in CH2Cl2–CH3CN due to cation complexing. Highly selective ion sensing film optodes for the determination of two kinds of ions, Cu2+and Ag+, were prepared with plasticized PVC–PVAc–PVA membranes containing the SQ or DTSQ dye.

Subjects :: Membrane
Absorption spectroscopy
Chemistry
Process Chemistry and Technology
General Chemical Engineering
Metal ions in aqueous solution
Inorganic chemistry
Ionophore
Molecule
Chromophore
Optode
Ion

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