1-Hexyl-3-methylimidazolium

We have also demonstrated that well-behaved quantized charging of gold MPCs is possible in air- and water-stable room-temperature ionic liquids, such as 1-hexyl-3-methylimidazolium tris(penta-fluoroethyl)-trifluorophosphate (HMImEEP), Fig. 30c, d [334, 335]. As ionic liquids have very attractive features, including nearzero vapor pressure, considerable thermal stability, and an electrochemical stability window that often exceeds 4 V, this demonstration is particularly significant from a technological point of view. 

Fig. 2.3 A comparison of the hydrolytic stability of four 1 -hexyl-3-methylimidazolium ionic liquids [HMIMJX ionic liquids. To 25 g of each ionic liquid, 7.1 mol% water was added. These solutions were heated to...

Note DMIm 1,3-dimethylimidazolium EMIm 1-ethyl-3-methylimidazolium PrMlm 1-methyl-3-propylimida-zolium BMIm 1-butyl-3-methylimidazolium PeMlm 1-pentyl-3-methylimidazolium and HMIm 1-hexyl-3-methylimidazolium. 

Some representative calculations, which were performed using the pure fluid and binary parameters of Tsioptsias et al. [69], are illustrated in Figures 2.12 and 2.13, for the LLE of water-1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C4mim+][Tf2N ]) system, and the VLE of acetone-1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C4mim+][Tf2N ] mixture. 

Binnemans s group found that a high quantum yield and an enhanced photostabiUty are achieved for a Eu " tetrakis(2-thenoyltrifluoroacetonate) complex dissolved in a weakly coordinating 1-hexyl-3-methylimidazolium ionic liquid... 

So far in this text, you have seen that ionic substances are stable solids with high melting points. For example, / sodium chloride has a melting point near 800°C. One of the hottest areas of current chemical research is ionic liquids—substances composed of ions that are liquids at normal temperatures and pressures. This unusual behavior results from the differences in the sizes of the anions and cations in the ionic liquids. Dozens of small anions, such as BF4 (tetrafluoroborate) or PFg (hexafluorophosphate), can be paired with thousands of large cations, such as 1-hexyl-3-methylimidazolium or l-butyl-3-methylimidazolium (parts a and b respectively, in the accompanying figure). These substances remain liquids because the bulky, asymmetrical cations do not pack together efficiently with the smaller,... 

The desorption of ionic liquids has also received some attention. The extent of desorption appeared to decrease with an increase in the alkyl chain length. For example, only about 1.5% of the initially adsorbed was desorbed from a sediment sample under the experimental conditions imposed. Ionic liquids such as 1-hexyl-3-methylimidazolium were reported as irreversible bound. Mro-zik et al. ° found that the extent of desorption from two soil samples, two subsurface soil samples, and a sample of beach sand seemed to depend on the organic matter content and the length of the alkyl chain (Fig. 16.2.3). Although there were too few adsorbent samples... 

Tomida D, Kenmochi S, Tsukada T, Qiao K, Bao Q, Yokoyama C (2012) Viscosity thermal conductivity of 1-hexyl-3-methylimidazolium tetrafluoroborate and l-octyl-3-methylimi-dazolium tetrafluoroborate at pressures up to 20 MPa. Int J Thermophys 33 959-969... 

C12H19F6N3O4S2 + 1-Hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide EVLM nil LB5287... 

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