Selective mercury uptake by polymer supported hydroxyethyl sulfonamides

Oktar, Ceren
Yılmaz, Levent
Ozbelge, H. Onder
Bicak, Niyazi
Hydroxyethyl sulfonamide function supported on styrene-divinyl benzene (9% mol/mol) bead resin is presented as mercury selective reagent. The resin product with 3.49 mmol g(-1) of 2-hydroxyethyl sulfonamide content removes reasonable quantities of mercuric ions (0.83-1.64 mmol g(-1)) from aqueous solutions of HgCl2, Hg (CH3COO)(2) and Hg (NO3)(2), in non-buffered conditions. Experiments showed that, the resin is able to extract mercury selectively, in the presence of foreign ions such as Zn(II), Cd(II), Fe(III), and Pb(II). Only negligible amount of sorption was detected for the case of Fe(III) (0.31 mmol g(-1)).


Immobilization of invertase on a conducting polymer of 1-(4-nitrophenyl)-2,5-di(2-thienyl)-1H-pyrrole
Tuncagil, Sevinc; Kiralp, Senem; Varls, Serhat; Toppare, Levent Kamil (Elsevier BV, 2008-03-01)
In this study, immobilization of invertase was achieved on a conducting polymer of 1-(4-nitrophenyl)-2,5-di(2-thienyl)-1H-pyrrole) (SNS (NO2)) via electrochemical polymerization. Kinetic parameters, maximum reaction rate (V-max) and substrate affinity (K-m), optimum temperature and pH, operational and storage stabilities of immobilized enzyme were determined.
Electrochromic performance and ion sensitivity of a terthienyl based fluorescent polymer
Atilgan, Nurdan; CİHANER, ATİLLA; Önal, Ahmet Muhtar (Elsevier BV, 2010-04-01)
A novel terthienyl based fluorescent polymer bearing strong electron-withdrawing substituents directly attached to the 3,4-positions of the central thiophene ring was synthesized by electrochemical polymerization of diethyl 2,5-di(3,4-ethylenedioxythiophen-2-yl)thiophene-3,4-dicarboxylate. The corresponding polymer was characterized by cyclic voltammetry, FT-IR and UV-vis spectroscopy. The polymer has a well-defined redox process (E-p,E-1/2 = 0.74 V) and demonstrates a reversible electrochromic behavior; li...
Proquinoidal-Conjugated Polymer as an Effective Strategy for the Enhancement of Electrical Conductivity and Thermoelectric Properties
Tam, Teck Lip Dexter; Ng, Chee Koon; Lim, Siew Lay; Yıldırım, Erol; Ko, Jieun; Leong, Wei Lin; Yang, Shuo-Wang; Xu, Jianwei (American Chemical Society (ACS), 2019-10-22)
P-doping of conjugated polymers requires electron transfer from the conjugated polymer to the p-dopant. This implies that the highest occupied molecular orbital (HOMO) of the conjugated polymer has to be higher than the lowest unoccupied molecular orbital (LUMO) of the p-dopant. Although commonly used p-dopants such as 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) have a low LUMO of -5.24 eV, most conjugated polymers used in high-performance field-effect transistors are donor- acceptor-type ...
Immobilization of Invertase in a Novel Proton Conducting Poly(vinylphosphonic acid) - poly(1-vinylimidazole) Network
Isikli, Suheda; Tuncagil, Sevinc; Bozkurt, Ayhan; Toppare, Levent Kamil (Informa UK Limited, 2010-01-01)
A novel proton conducting polymer blend was prepared by mixing poly(vinylphosphonic acid) (PVPA) with poly(1-vinylimidazole) (PVI) at various stoichiometric ratios via changing molar ratio of monomer repeating unit to achieve the highest protonation. The polymer network having the most suitable stoichiometric ratio for substantial proton conductivity was prepared and characterized by FT-IR spectroscopy and proton conductivity measurements. The network was used for immobilization of invertase and some import...
Selective oxidation of propylene to propylene oxide using combinatorial methodologies
Miyazaki, T; Ozturk, S; Onal, I; Senkan, S (Elsevier BV, 2003-06-30)
Direct oxidation of propylene by oxygen to propylene oxide (PO) has been studied through the application of the techniques of combinatorial catalysis. Catalytic materials containing single and binary metal components were prepared by impregnating standard gamma-Al2O3 pellets. In the first stage, 34 single component catalytic materials at three different metal loading levels were prepared and screened for PO activity and selectivity using array channel microreactors and mass spectrometry. Experiments were co...
Citation Formats
C. Oktar, L. Yılmaz, H. O. Ozbelge, and N. Bicak, “Selective mercury uptake by polymer supported hydroxyethyl sulfonamides,” REACTIVE & FUNCTIONAL POLYMERS, pp. 842–850, 2008, Accessed: 00, 2020. [Online]. Available: