Adsorption of amino acid derivatives on calixarene carboxylic acid impregnated resins

Applications of Nano-Baskets of Calixarenes in Chromatography

“…3) and anions ( Fig. 3) [59][60][61][62][63][64][65] shows an increase in the ability of calixarene derivatives in solvent extraction of alkaline earth metal cations [66][67][68][69][70][71][72][73][74][75][76][77], transition metal ions [78][79][80][81][82][83][84][85][86][87][88][89][90], molecular compounds [91][92][93][94][95][96][97][98][99][100][101][102][103][104][105] and anions [106][107][108].…”

An efficient calix[4]arene based silica sorbent for the removal of endosulfan from water

“…Its upper and lower rim can be functionally modified to form various derivatives to function as guests for various toxic metals or neutral molecules [20] such as Pb(II), chromium(VI), arsenic(V), carcinogenic aromatic amines, amino acid derivatives and azodyes from aqueous systems [21][22][23]. The immobilization of calixarene moiety onto the polymeric support enhances the sorption capacity of the resin [24][25][26]. Present work deals with the investigation of sorption efficiency of synthesized calix[4]arene based silica resin through batch and column sorption methods to remove endosulfan from aqueous system.…”

Study on adsorption and desorption properties of the starch grafted p-tert-butyl-calix[n]arene for butyl Rhodamine B solution

“…In this respect, supramolecular chemistry has provided important avenues to prepare new type adsorbents and extraction reagents. This was achieved with the development of macrocyclic receptors, such as crown ethers [22,23], cyclodextrins [24][25][26][27][28][29][30][31][32][33] and calix[n]arenas [34][35][36][37][38]. Calix[n]arenes are cyclic oligomers synthesized by condensation of a p-alkylated phenol and formaldehyde.…”

“…This versatility makes the calixarene family the third major class of macrocyclic binding agents after crown-ethers and cyclodextrins [39][40][41]. Nowadays many researchers are interested in crosslinking calixarenes with suitable crosslinkers to form an insoluble resin which has specific adsorption based on inclusion complex formation [34][35][36][37][38].…”