Asse II salt mine, in Germany, contains low and intermediate-level radioactive waste that must be retrieved the upcoming years. Potentially contaminated salts brines will require treatment, with 137Cs being main contaminant. Cs+ is problematic to selectively recover due its chemical similarity Na+ K+ which are present high quantities a mine. This paper offers novel solution for separation from ...

The anionic calixarenes para-sulphonatocalix[4]arene and 1,3-di-O-phosphonatocalix[ 4]arene, have been used to cap silver nanoparticles. The binding of these functional particles with regard to various serum albumins (bovine serum albumin, human serum albumin, porcine serum albumin and sheep serum albumin) has been studied by variable temperature fluorescence spectroscopy. The quenching of the ...

The isomerism of the polyspirodienone derivatives of the large-ring p-fertbutylcalix[n]arenes (n=5,6,8) is analyzed. Monoand polyspirodienone calix[n]arene derivatives were prepared by mild oxidation of the respective calix[n]arenes and the obtained products were characterized. Reactions of the monospirodienone derivatives with hydrazines and their rearrangements to xanthenocalixarenes are desc...

Although various complex, bulky ligands have been used to functionalize plasmonic gold nanoparticles, introducing them to small, atomically precise gold clusters is not trivial. Here, we demonstrate a simple one-pot procedure to synthesize fluorescent magic number Au25 clusters carrying controlled amounts of bulky calix[4]arene functionalities. These clusters are obtained from a synthesis feed ...

Lithiation and subsequent reaction with CO(2) was applied to calix[4]arenes with different, equal or mixed, ether functions at the lower-rim site as well as tert-butylated or non-tert-butylated upper-rim positions. Whereas this reaction fails for symmetric calix[4]arene ethers with alkoxy residues greater than methoxy, the carboxylation of mixed methoxy-propoxy calixarene ethers is possible. In...

"Naked eye" color detection of proteins was achieved by embedding calixarene receptors within vesicles comprising phospholipids and the chromatic polymer polydiacetylene. Dramatic visible absorbance changes were induced through electrostatic interactions between the protein surface and the vesicle-incorporated hosts. The colorimetric responses could be induced by micromolar protein concentratio...