Synthesis and physical studies of polycarbonate of p-tert-}butylcalix[4]arene: a highly selective receptor for Na+

Authors : Muhammad ASHRAM, Nawash ALGHEZAWI, İbrahim Abu AWAAD, Gülsen ASMAN

Pages : 647-656

Doi:10.3906/sag-1201-49

View : 17 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The synthesis and characterization of a polycarbonate of p-tert-butylcalix[4]arene 4 are reported. It was synthesized by condensation of p-tert-butylcalix[4]arenetetraol derivative 3 with ethyl chloroformate. This new polymer possesses a hydrolyzable backbone and tunable hydrophobic/hydrophilic properties. The experimental results indicate that the polycarbonate was successfully synthesized with average molecular weight \overline{M}w, insert ignore into journalissuearticles values(2.328 \times 104 g/mol);, which was determined by static light scattering method using a Berry plot. The structure of this polymer was determined by IR spectroscopy. The thermal properties were investigated using differential scanning calorimetry insert ignore into journalissuearticles values(DSC);. The degree of crystallinity was measured by means of XRD. The extraction ability of compounds 3 and 4 toward alkali metal cations was studied using conductometry. It was observed that compound 4 had the highest extractability and selectivity toward Na+.
Keywords : p tert butylcalixarene, p tert butylcalixarenetetraol, polymer, carbonate, polycarbonate, conductivity