2D Phase transition of organic molecules adsorbed at the Hg electrode/aqueous solution interface Part 2 Comparison of experimental data with model predictions

Abstract

The 2D phase transition of thymine, uracil, guanine and coumarin, adsorbed at the Hg electrode/aqueous solution interface, is rationalised on the basis of the model proposed in Part 1, J. Chem. Soc., FaradayTrans., 1994, 90, 2925. The results together with that obtained for adenine, are compared with the relevant quantities calculated by using molecular descriptors (dipole moments and polarizabilities). Finally, a value of the standard enthalpy phase-transition variation, averaged over the results collected for the five compounds is estimated and discussed.

References

1. C. Fontanesi, J. Chem. Soc., Faraday Trans., 1994, 90, 2925.
2. V. Vetterl, Coll. Czech, Chem. Commun., 1966, 31, 2105.
3. R. Sridharan, R. de Levie and S. K. Rangarajan, Chem. Phys. Lett., 1987, 142, 43.
4. R. de Levie, Chem. Rev., 1988, 88, 599.
5. R. de Levie, Adv. Electrochem. Electrochem. Eng., 1985, 13, 1.
6. V. A. Benderskii, A. N. Brodskii, L. I. Daikhin and G. I. Velichko, Mod. Asp. Electrochem., 1994, 26, 1.
7. R. Guidelli and G. Aloisi, J. Electroanal. Chem., 1994, 373, 107.
8. P. Nikitas, J. Electroanal. Chem., 1994, 375, 319.
9. P. Nikitas and S. Andoniou, J. Electroanal. Chem., 1994, 375, 339.
10. U. Retter, V. Vetterl and J. Jursa, J. Electroanal. Chem., 1989, 274, 1.
11. C. Donner, H. Baumgartel, L. Pohlmann, U. Retter and R. Philip, Ber. Bunsen-Ges. Phys. Chem., 1996, 100, 403.
12. Cl. Buess-Herman, in Trends in Interfacial Electrochemistry, ed. A. F. Silva, Reidel, Dordrecht, 1986, p. 205.
13. Cl. Buess-Herman, Adsorption of Molecules at Metal Electrodes, VCH, New York, 1992 Ch. 2;; Cl. Buess-Herman, Prog. Surf. Sci., 1994, 46, 335.
14. V. Brabec, S. D. Christian and G. Dryhurst, J. Electroanal. Chem., 1977, 85, 389.
15. F. G. Thomas, Cl. Buess-Herman and L. Gierst, J. Electroanal. Chem., 1986, 214, 597.
16. R. Srinivasan and R. de Levie, J. Electroanal. Chem., 1988, 249, 321.
17. GAUSSIAN 94, Revision D.4, M. J. Frisch, G. W. Trucks, H. B. Schlegel, P. M. W. Gill, B. G. Johnson, M. A. Robb, J. R. Cheeseman, T. Keith, G. A. Petersson, J. A. Montgomery, K. Raghavachari, M. A. Al-Laham, V. G. Zakrzewski, J. V. Ortiz, J. B. Foresman, J. Cioslowski, B. B. Stefanov, A. Nanayakkara, M. Challacombe, C. Y. Peng, P. Y. Ayala, W. Chen, M. W. Wong, J. L. Andres, E. S. Replogle, R. Gomperts, R. L. Martin, D. J. Fox, J. S. Binkley, D. J. Defrees, J. Baker, J. P. Stewart, M. Head-Gordon, C. Gonzalez and J. A. Pople, Gaussian, Inc., Pittsburgh PA, 1995.
18. M. J. S. Dewar and W. Thiel, J. Am. Chem. Soc., 1977, 99, 4499.
19. J. G. Kirkwood and I. Oppenheim, Chemical Thermodynamics, McGraw-Hill, New York, 1961.
20. R. Parsons, J. Electroanal. Chem., 1963, 5, 397.
21. S. Trasatti, J. Electroanal. Chem., 1978, 91, 1.
22. J. A. V. Butler, Proc. R. Soc., London, Series A, 1929, 122, 399.
23. J. O.'M. Bockris and A. K. N. Reddy, Modern Electrochemistry, Plenum Press, New York, 1970, vol. 2, ch. 7.2.
24. R. Parsons, in Modern Aspects of Electrochemistry, ed. J. O.'M. Bockris and B. Conway, Plenum Press, New York, 1971, vol. 1, p. 103.
25. S. Trasatti, Electrochim. Acta, 1990, 35, 269.
26. S. Trasatti, in Electrified Interfaces in Physics, Chemistry and Biology, ed. R. Guidelli, Kluwer, Dordrecht, 1992, p. 229.
27. S. H. Yalkowsky, Ind. Eng. Chem. Fundam., 1979, 18, 108.
28. J. H. Knox, Molecular Thermodynamics, Wiley-Interscience, New York, 1971.
29. D. Fox, M. M. Labes and A. Weissberger, Physics and Chemistry of the Organic Solid State, Interscience Publishers, New York, 1963.
30. H. Kinoshita, S. D. Christian and G. Dryhurst, J. Electroanal. Chem., 1977, 83, 151.
31. H. Kinoshita, S. D. Christian and G. Dryhurst, J. Electroanal. Chem., 1977, 85, 377.
32. V. Brabec, M. H. Kim, S. D. Christian and G. Dryhurst, J. Electroanal. Chem., 1979, 100, 111.
33. R. L. Scruggs, E. K. Achter and P. D. Ross, Biopolymers, 1972, 10, 1961.
34. M. Schrettenbrunner, P. Chaiysaith, H. Baumgartel and U. Retter, Ber. Bunsen-Ges. Phys. Chem., 1993, 97, 843.
35. M. H. Holzle, Th. Wandlowski and D. M. Kolb, Surf. Sci., 1995, 335, 281.