JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS, cilt.114, ss.300-310, 2020 (SCI-Expanded)
A bifunctional Zn(II)-coordination polymer, namely, {[Zn-2(mu(4)-BDPT)(mu-dpetan)(2)]center dot 2H(2)O}n (1) (BDPT: bis(3,5-dicarboxyphenyl)terephthalamide, dpetan: 1,2-bis(4-pyridylethane)) was synthesized under solvothermal condition and characterized. Single crystal X-ray result showed that compound 1 displayed a 2D+2D -> 3D inclined polycatenation and a 3,4-conntected mcm/Cairo tiling-type topology. The compound exhibited high stability in aqueous solution with three pH values (2, 7.32 and 10). Bifunctional compound 1 adsorbed methylene blue (MB) and detected Fe3+ ions in aqueous solution. The adsorption studies revealed that the compound removed selectively the MB with an excellent efficiency from dye mixture (MB-MO) and the removal efficiency and the maximum adsorption capacity for MB were calculated as 99.7% and 239.57 mg g(-1), respectively, at pH = 10 and at room temperature. This selective adsorption could be assigned to the electrostatic interactions between cationic dye (MB) and nucleophilic groups on compound 1. Moreover, the luminescence studies showed that the compound exhibited highly selective and sensitive detection towards Fe3+ ions over the other competing metal ions with a detection limit of 2.1 x 10(-4) M. The results indicated that 1 could be usable as a selective adsorbent for MB and a luminescent sensor for the detection of Fe3+ ions. (C) 2020 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.