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

Authors

MUHAMMAD ASHRAM
NAWASH AL GHEZAWI
IBRAHIM ABU AWAAD
GÜLSEN ASMAN

DOI

10.3906/kim-0811-28

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}, (2.328 \times 10^4 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 (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.

First Page

647

Last Page

656

Recommended Citation

ASHRAM, MUHAMMAD; GHEZAWI, NAWASH AL; AWAAD, IBRAHIM ABU; and ASMAN, GÜLSEN (2009) "Synthesis and physical studies of polycarbonate of p-tert-}butylcalix[4]arene: a highly selective receptor for Na^+," Turkish Journal of Chemistry: Vol. 33: No. 5, Article 8. https://doi.org/10.3906/kim-0811-28
Available at: https://journals.tubitak.gov.tr/chem/vol33/iss5/8