本研究系以五種甲基咪唑陽離子(methylimidazolium)為主體之離子液體探討將其分為兩類，第一類是:1-butyl-3-methylimidazolium hexafluorophosphate [C4mim][PF6]、1-hexyl-3-methylimidazolium hexafluorophosphate [C6mim][PF6]、 1-methyl-3-octylimidazolium hexafluorophosphate [C8mim][PF6]，以固定陰離子[PF6 ]藉由改變陽離子氮上取代基以丁基、己基、辛基探討不同鏈長對離子液體性質影響；第二類為1-methyl-3-octylimidazolium hexafluorophosphate [C8mim][PF6]、 1-methyl-3-octylimidazolium trifluoromethanesulfate [C8mim][OTf ]以固定[C8mim]藉由改變三種不同組成之陰離子探討不同結構之陰離子對離子液體性質影響。
　　藉由氣相層析法，由Rohrschneider / McReynolds指數判別離子液體之極性大小及屬性，並由滯留指數及線性廻歸計算熱力學參數更深入探討其物化性質。結果發現在離子液體在帶有羥基探測分析物會有氫鍵作用，且隨鏈長增加及陰離子之質子接受能力影響氫鍵作用力。

　The use of capillary gas-liquid chromatographic retention data to evaluate sets of probe solute descriptors for n-alkyl substituted methylimidazolium based ionic liquids was carried out. Three n-alkyl substituted imidazolium cations and three different counter ions were studied. Comparisons are made between the different chain lengths of ([C4,C6 and C8mim] [PF6]) and the different combinations of anions ([C8mim] [PF6 and OTf]) as well. Using gas-liquid chromatography to test several characteristic probe compounds to evaluate Rohrschneider / McReynolds index and solvation thermodynamic parameters. It is shown that the interactions between the RTIL and the probe solutes varies. The ionic interaction decreased with the increase of alkyl chain length. The probe compounds with hydroxyl and amin groups are strongly retained by all the tested RTIL. Those solvation thermodynamic parameters calculated by linear regression of the isothermal retention data are tabulated and compared.

1. F. H. Hurley , J. P. Wir,J.Electrochem. Soc., 98, 203 (1951).
2. J. S. Wilkes, Green Chem. 4, 73 (2002).
3. A. Berthod, S. Carda-Broch J. Liq. Chromatogr. & Rel. Techno. 126,1493
(2003)
4. Brennecke, J. F., Maginn, E. J. AIChE J. 47, 2384(2001)
5. P. Walda,Bull. Acaf. Imper. Sci. (St. Petersberg),1800(1914)
6. R. A. Carpio, L. A. King, R. E. Lindstrom, J. C. Nardi and C. L.
Hussey, J. Electrochem. Soc., 126, 1644 (1979).
7. E. I. Cooper and E. J. M. O’Sullivan, in “Proceeding of the eighth
International Symposium of Molten Salts, Physical and High
Temperaturere Materials Division Proceedings”, PV 92-16, R. J. Gale,
G. Blomgren and H. Kojima, Editors, pp. 386, J. Electrochem. Soc.,
Pennington, NJ(1992).
8. R. T. Carlin, H. C. Dw Long, J. Fuller and P. C. Trulove, J.
Electrochem.Soc.,141, L73 (1994)
9. P. Bonhôte, A. —P. Dias, N. Papageorgiou, K. kalyanasundaram and M.
Grätzel, Inorg. Chem., 35, 1168 (1996).
10. C. F. Poole, B. R. Kersten, S. S. J. Ho, M. E. Coddens, K. G. Furton,
J. Chromatogr., 352, 407 (1986).
11. P. H. Shetty, P. J. Youngberg, B. R. Kersten, C. F. Polle, J.
Chromatogr., 411, 61 (1987).
12. D. R. Macfarlane, P. Meakin, J. Sun, N. Amini, M. Forsyth, J. Phys.
Chem. B, 103, 4164 (1999).
13. Barber, D. W.; Phillips, C. S. G.; Tusa, G. F.; Verdin, A. J. Chem.
Soc. 18(1959)
14. D. W. Armstrong, L. He, and Y. S. Liu, Anal. Chem. 71, 3873(1999)
15. A.Berthod , L. He, D. W. Armstrong Chromatographia 53,63(2001)
16. J. L. Anderson , D. W. Armstrong Anal. Chem. 75, 4851(2003)
17. J Ding, T. Welton, D.W. Armstrong Anal. Chem. 76,66819(2004)
18. J. L. Anderson and D. W. Armstrong Anal. Chem. 77, 6453 (2005)
19. Berthod, A.；Zhou, E Y., Le, K； D. W. Armstrong Anal. Chem. 67, 849
(1995)
20. E. Kovats, Helv. Chim. Acta, 1915, 41(1958)
21. IUPAC Compendium of Chemical Terminology 2nd Edition (1997)
22. L. S. Ettre, Pure Appl.Chem., 65, 819(1993)
23. F. R. Gonzalez., J. Chromatogr A, 779( 1997)
24. M. L. Lee, F. J. Yang, K. D. Bartle, “Open Tubular Column Gas
Chromatography: Thory and Practice”,John Wiely & Sons, New York(1984)
25. C. F. Poole, S. A. Schuette, “Contemporary Practice Of
Chromatography”, Elsevier, New York(1984)
26. C Wakai, A. Oleinikova, J. Phys Chem. B 109,36(2005)
27. Summerlin, Lee R. Chemical Demonstrations: a Sourcebook for Teachers,
2nd Ed. 2, 90(1988)
28. David R. Lide CRC handbook of Chemistry and Physics
29. Wenchuan Wang J Phys. Chem. B 108, 12978(2004)
30. Welton,T. Phys. Chem.Chem. Phys 5,2790(2003)
31. 李麗梅, “以側鏈型矽氧液晶聚合物為氣相層析毛細管柱靜相之離機制”國立成
功大學化學研究所碩士論文
32. Allan D. Headley J. Phys. Org. Chem 18, 1018(2005)
33. Jacob M. C., Sudhir N. V. K. Aki J Phys Chem B 108,5113(2004)
34. McDonald I. J Mol Biol 238, 777-93 (1994)