Synthesis and binding properties of two polymeric thiacalix[4]arenes

Novel calix[4]arene‐based polymeric catalysts as acyltransferase enzyme mimics

“…Compounds 1-7 and 11-14 were prepared according to known procedures, [20][21][22][23][24][25][26] and the other monomeric calix [4]arenes and their polymeric analogs studied in this work, as illustrated in Schemes 1 and 2, have been synthesized as follows.…”

“…To a suspension of 9 (3.0 g) in 150 mL of EtOH was added 15% aqueous KOH (10 mL) solution, and the mixture was refluxed for 24 h. After evaporating the solvent under reduced pressure, the residue was mixed with water (50 mL) and acidified with diluted HCl. The precipitates were filtered off, washed with water, and EtOH subsequently, and dried to give 10 Preparation of calix [4]arene-based polysiloxanes (20,21,22, and 23)…”

Readily prepared polystyrene-bound pyridine-2,6-dicarboxylate and its application for removal of mercury ions

“…Mercuric ions interact strongly with ligands containing nitrogen or sulfur donor atoms, including pyridine, poly(ethylenimine), thioether, thiourea and phosphine sulfide. Recently, many of these polymers such as porous cellulose carrier modified with poly(ethyleneimine) [11], a resin incorporating imidazolylazo function in a polystyrene bed [12], poly(4-vinylpyridine) hydrochloride resin [13], polymersupported thiacrown( [14] aneS 4 and [17]aneS 5 ) [14], dithiocarbamate-incorporated monosize polystyrene [15], modified chloromethylated polystyrene-PAN [16], 6-mercaptopurinylazo resin on polystyrene-divinylbenzene [17], N-chlorosulfonamide groups into polystyrene-divinylbenzene and polyacrylamide onto functionalized polystyrenedivinylbenzene [18], grafted acrylate esters from cross-linked polystyrene beads [19], poly(2-hydroxyethyl methacrylate) gel beads modified with poly(ethyleneimine) [20], polystyrenesupported amines [21], immobilized N-methyl-D-glucamine [22] and polymeric thiacalix [4]arenas [23] were synthesized and used for the selective removal of mercury ions. In this study, we report a convenient method for the synthesis of a new resin containing pyridine-2,6-dicarboxylic acid (PDC) on chloromethylated polystyrene (CMP) for the removal of mercury(II) in environmental samples.…”

Synthesis, extraction, and adsorption properties of calix[4]arene‐poly(ethylene‐glycol) crosslinked polymer

“…Only a few calixarene-containing polymers have been developed as adsorption materials. [16][17][18] These reports are all concerning about the adsorption behaviors toward metal ions such as alkali metal cations (Li 1 , Na 1 , K 1 , Rb 1 , Cs 1 ) and heavy metal cations (Ag 1 , Cu 21 , Hg 21 , Pb 21 , Co 21 , Ni 21 ) via liquid-liquid extraction method. This article reports a novel crosslinked hydrophilic polymer containing calix [4]arene units, which can extract organic molecules from both aqueous solution and gas phase.…”