Abstract
The dilution enthalpies,Δ dil H, of tetraalkylammonium chondroitin 4-sulfate (R4NChSA) and polyacrylate (R4NPAA) having methyl (Me), ethyl (Et), propyl (Pr) and butyl (Bu) as alkyl groups (R) were measured to elucidate the effects of hydrophobic counterions. TheΔ dil H of R4NChS-A and R4NPAA were negative (exothermic) and decreased as the carbon number of tetraalkylammonium cation (R4N+) increased. These results were found to possess the same effects onΔ dil H as these of bromides. The non-electrostatic terms of dilution enthalpiesΔ dil H n of R4NChS and R4NPAA were evaluated by using the electrostatic terms ofΔ dil H obtained from Manning's theory. TheΔ dil H n of R4NChS-A and R4NPAA decreased, i.e., their exothermic tendencies increased as the carbon number of R4N+ increased, and the rate of decrease of the R4NPAA was more than that of the R4NChS-A. These results are discussed in relation to the increase of the hydrated water structure around R4N+ on dilution.
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Yonese M, Tsuge H, Kishimoto H (1978) J Chem Soc Jpn 108–112
Yonese M, Tsuge H, Kishimoto H (1987) J Phys Chem 91:1971–1977
Tsuge H, Yonese M, Kishimoto H (1978) J Chem Soc Jpn 609–613
Manning GS (1969) J Chem Phys 51:924–933
Tsuge H, Yonese M, Kishimoto H (1979) Bull Chem Soc Jpn 52:2846–2848
Tsuge H, Yonese M, Kishimoto H (1981) Bull Chem Soc Jpn 54:20–24
Wen WY (1971) In: Horne RA (ed) Water and Aqueous Solutions, Wiley-Interscience, New York, p 613
Ise N, Okubo T (1968) J Phys Chem 72:1361–1366
Asai K, Takaya K, Ise N (1969) J Physt Chem 73:4071–4076
Yonese M, Hioki M, Yano M, Kishimoto H (1992) J Colloid Interface Sci 149:314–321
Tsuge H, Yonese M (1982) J Chem Soc Jpn 1583–1587
Mathews MB (1956) Arch Biochim Biophys 61:367–377
Takahashi A, Nagasawa M (1964) J Am Chem Soc 86:543–548
Kishimoto H, Sumida K (1974) Chem Pharm Bull 22:1108–1118
Robinson RA, Stokes RH (1959) Electrolyte Solutions, Butterworths, London, p 29
Lindenbaum S (1966) J Phys Chem 70:814–820
Harned HS, Owen BB (1957) The Physical Chemistry of Electrolyte Solutions, Reinhold Book Co., New York, p 708
Fuoss RM, Katchalsky A, Lifson S (1951) Proc Natl Acad Sci USA 37:579–589
Lifson S, Katchalsky A (1954) J Polym Sci 13:43–55
Skerjanc J (1990) J Chem Phys 93: 6731–6737
Boyd GE, Wilson DP (1976) J Phys Chem 80:805–808
Paoletti S, Delben F, Crescenzi V (1981) J Phys Chem 85:1413–1418
Dolar D, Skerjanc J, Bratko D, Crescenzi V, Quadrifoglio F (1982) J Phys Chem 86:2469–2471
Vesnaver G, Rudez M, Pohar C, Skerjanc J (1984) J Phys Chem 88:2411–2414
Arnott S, Guss JM, Hukins DWL, Mathews MB (1973) Science 180: 743–745
Isaac DH, Atkins EDT (1973) Nature (London), New Biol 244:252–253
Ise N, Mita K, Okubo T (1973) J Chem Soc Faraday Trans 1 69:106–112
Mita K, Okubo T (1974) J Chem Soc Faraday Trans 1 70:1546–1550
Daoust H, Chabot M-A (1980) Macromolecules 13:616–619
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Tsuge, H., Kishimoto, H. & Yonese, M. Thermodynamic properties of dilution of chondroitin 4-sulfate having tetraalkylammonium counterions. Colloid Polym Sci 274, 819–825 (1996). https://doi.org/10.1007/BF00654739
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DOI: https://doi.org/10.1007/BF00654739