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Liquid–liquid extraction of transition metal cations by nine new azo derivatives calix[n]arene
Liquid–liquid extraction of various alkali, alkaline-earth, and transition metal cations with o-(4-hydroxydiazophenyldiazophenyl)-p-tert-butylphenol (L1), bisdiazoExpand
Synthesis and characteristics of poly(3-pyrrol-1-ylpropanoic acid) (PPyAA)–Fe3O4 nanocomposite
Poly(3-pyrrol-1-ylpropanoic acid) (PPyAA)-Fe(3)O(4) nanocomposite was successfully synthesized by an in situ polymerization of 1-(2-carboxyethyl) pyrrole in the presence of synthesized Fe(3)O(4) naExpand
A versatile approach toward chemosensor for Hg2+ based on para-substituted phenylazocalix[4]arene containing mono ethyl ester unit
Abstract In the present study, six new azocalix[4]arenes have been synthesized by reacting calix[4]arene with p -substituted aniline and ethyl bromoacetate. Characterization of these compounds hasExpand
Synthesis and structural characterization of bisazocalix[4]arene with melamine: Metal ion extraction studies
Abstract In this study, the synthesis and characterization of novel bisazocalix[4]arene [2-amino-4,6-bis(5-azo-25,26,27-tribenzoyloxy-28-hydroxycalix[4]arene)-1,3,5-triazine] ( 5 ), symmetricallyExpand
Azocalixarenes: Synthesis, Characterization, Complexation, Extraction, Absorption Properties and Thermal Behaviours
Azocalixarenes, which have a conjugated chromophore azo (–N=N–) group in p-positions, are synthesized in “one-pot” procedures in satisfactory yields. Their structures in the solid and solution areExpand
The synthesis of some new derivatives of calix[4]arene containing azo groups
Abstract Five new compounds p-(4-n-butyl-phenylazo)calix[4]arene ( 1 ), p-(4-phenylazophenylazo)calix[4]arene ( 2 ), p-(4-acetanilidazo)calix[4]arene ( 3 ),Expand
Comparative studies on the solvent extraction of transition metal cations by calixarene, phenol and ester derivatives.
TLDR
It was found that, all the compounds (L1-L9) examined showed selectivity for transition metal cations such as Ag+, Hg+ Hg2+, and poor efficiency for alkaliMetal cations (Na+ and K+). Expand
LIQUID-LIQUID EXTRACTION OF TRANSITION METAL CATIONS BY CALIXARENE-BASED CYCLIC LIGANDS
ABSTRACT The selective liquid-liquid extraction of various alkali and transition metal cations from the aqueous phase to the organic phase was carried out by using p-tert-butylcalix[4]arene (L1),Expand
Transition metal cations extraction by ester and ketone derivatives of chromogenic azocalix[4]arenes.
TLDR
The main aim is to prepare new chromogenic azocalix[n]arene molecules to elaborate an extractant with high extractant selectivity for metal ions able to detect this type of pollutant. Expand
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