Abstract
The binding of p-ethylbenzenesulfonate ions (EBS−’s) by poly(allylammonium) cation (PAAH+) and their hydrophobic association around PAAH+ have been investigated in aqueous solutions through 1H NMR and Cl− activity measurements. At a constant PAAH+Cl− concentration, all 1H NMR signals of EBS− exhibited up-field shift (ring current shift) with the increase in the NaEBS concentration. However, any chemical shift change did not observe in each signal of PAAH+. These results show that EBS−’s atmospherically bound to PAAH+ associate each other due to their hydrophobic interaction. The association of EBS−’s is depressed by the decrease in the charge density of the polyion and broken by the addition of another simple salt (NaCl) to the PAAH+Cl−/NaEBS system. Moreover, it was found that the counterion exchange from Cl−’s to EBS−’s around PAAH+ is efficiently promoted by the association of EBS−’s.
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References
F. Oosawa, “Polyelectrolytes,” Marcel Dekker, New York, N. Y., 1971.
S. Miyamoto and N. Imai, Biophys. Chem., 11, 91 (1980).
M. Satoh, E. Yoda, T. Hayashi, and J. Komiyama, Macromolecules, 24, 1123 (1991).
N. J. Turro, T. Okubo, C.-J. Chung, J. Emert, and R. Catena, J. Am. Chem. Soc., 104, 4799 (1982).
W. G. Herkstroeter, P. A. Martic, S. E. Hartman, J. L. R. Williams, and S. Farid, J. Polym. Sci., Polym. Chem. Ed., 21, 2473 (1983).
T. Itaya, K. Ueda, and H. Ochiai, Polym. J., 24, 539 (1992).
H. Ochiai, M. Handa, H. Matsumoto, T. Moriga, and I. Murakami, Macromol. Chem., 186, 2547 (1985).
N. J. Turro and I. F. Pierrola, J. Phys. Chem., 87, 2420 (1983).
J. Plestil, Yu. M. Ostanevich, Yu. V. Bezzabotnov, and D. Hlavata, Polymer, 27, 1241 (1986).
T. Itaya and H. Ochiai, Polym. Commun., 32, 564 (1991).
J. G. Pritchard and P. C. Lauterber, J. Am. Chem. Soc., 83, 2105 (1961).
M. Nagasawa and I. Kagawa, J. Polym. Sci., 25, 61 (1957).
G. S. Manning, J. Chem. Phys., 51, 924 (1969).
H. P. Gregor and M. Frederick, J. Polym. Sci., 23, 451 (1957).
M. Hara, A. H. Lee, and J. Wu, J. Polym. Sci., B, Polym. Phys. Ed., 25, 1407 (1987).
H. Ochiai, Y. Anabuki, O. Kojima. K. Tominaga, and I. Murakami, J. Polym. Sci., B, Polym. Phys. Ed., 28, 233 (1990).
B. Boussouria, A. Ricard, and R. Audebert, J. Polym. Sci., B, Polym. Phys. Ed., 26 649 (1988).
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Itaya, T., Ueda, K., Ochiai, H. et al. Binding of Hydrophobic Counterions by Polyelectrolyte and Their Hydrophobic Association around Polyion. Polym J 25, 545–552 (1993). https://doi.org/10.1295/polymj.25.545
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DOI: https://doi.org/10.1295/polymj.25.545
