| 초록 |
Novel room temperature ionic liquids (RTILs), [DMIm][MPEG200P] and [DMIm][MPEG350P], bearing ether-functionalized anion were prepared by monomethylated polyethylene glycol (MPEG-200 and MPEG-350) and their physical and electrochemical properties were studied. The ILs exhibited high thermal stabilities over 200 oC and have wide electrochemical window over 5 V. [DMIm][MPEG200P] and [DMIm][MPEG350P] showed relatively low ionic conductivities of 9.3 and 5.71 mS cm-1 at 100 oC, respectively. Interestingly, however, after added 1 mole eq. of LiTf2N into each IL, the ionic conductivities of [DMIm][MPEG200P] and [DMIm][MPEG350P] were increased up to 12.0 and 11.7 mS cm-1 at 100 oC, respectively, although both ILs became soft gel. |
