Synthesis and metal extraction studies of a novel chromogenic 5,17-bisazocalix[4]arenes

Elçin, Serkan; Deligöz, Hasalettin

doi:10.1007/s10847-014-0408-4

J Incl Phenom Macrocycl Chem

2014

DOI: 10.1007/s10847-014-0408-4

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Synthesis and metal extraction studies of a novel chromogenic 5,17-bisazocalix[4]arenes

Serkan Elçin

Hasalettin Deligöz

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Cited by 5 publications

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“…Two phase extractions have been widely used for separation, purification, and recovery of target products in biotechnology, food chemistry, and nuclear industry. − The two phases may be combinations of polymer/polymer, polymer/salt, polymer/water, and solvent/water systems. − In liquid–liquid systems, the extractants or ligands can be dissolved into one of the liquid phase while the analytes are present in the other phase . The dissolution of the ion exchanger together with the extractants/ligands was shown to enhance the extraction efficiency and gave a reduced extraction time …”

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confidence: 99%

Ionophore-Based Titrimetric Detection of Alkali Metal Ions in Serum

et al. 2017

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While the titrimetric assay is one of the most precise analytical techniques available, only a limited list of complexometric chelators is available, as many otherwise promising reagents are not water-soluble. Recent work demonstrated successful titrimetry with ion-exchanging polymeric nanospheres containing hydrophobic complexing agents, socalled ionophores, opening an exciting avenue in this field. However, this method was limited to ionophores of very high affinity to the analyte and exhibited a relatively limited titration capacity. To overcome these two limitations, we report here on solvent based titration reagents. This heterogeneous titration principle is based on the dissolution of all hydrophobic recognition components in a solvent such as dichloromethane (CH 2 Cl 2 ) where the ionophores are shown to maintain a high affinity to the target ions. HSV (hue, saturation, value) analysis of the images captured with a digital camera provides a convenient and inexpensive way to determine the end point. This approach is combined with an automated titration setup. The titrations of the alkali metals K + , Na + , and Li + in aqueous solution are successfully demonstrated. The potassium concentration in human serum without pretreatment was precisely and accurately determined as 4.38 mM ± 0.10 mM (automated titration), which compares favorably with atomic emission spectroscopy (4.47 mM ± 0.20 mM).

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Ionophore-Based Titrimetric Detection of Alkali Metal Ions in Serum

et al. 2017

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Synthesis and characterization of a chemosensor based on trisamidetetraazocalix[4]arene linked by melamine

Elçin

Gönül

2023

Monatsh Chem

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Macrocycles containing azo groups: recognition, assembly and application

Geng

Sun

Guo

2018

J Incl Phenom Macrocycl Chem

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Synthesis and metal extraction studies of a novel chromogenic 5,17-bisazocalix[4]arenes

Cited by 5 publications

References 24 publications

Ionophore-Based Titrimetric Detection of Alkali Metal Ions in Serum

Ionophore-Based Titrimetric Detection of Alkali Metal Ions in Serum

Synthesis and characterization of a chemosensor based on trisamidetetraazocalix[4]arene linked by melamine

Macrocycles containing azo groups: recognition, assembly and application

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