Synthesis and CMC Studies of 1-methyl-3-(pentafluorophenyl)methylimidazolium Quaternary Salts
Critical Micelle Concentration (CMC) of sodium dodecyl sulfate (SDS), an anionic surfactant, has been investigated in 30mM aqueous solutions of 1-benzyl-3-methylimidazolium chloride (1) and 1-methyl-3-(pentafluorophenyl)imidazolium chloride (2). The CMC of SDS is significantly lower in the presence of 2 as compared to that of 1. The decreased CMC of SDS in the presence of 2 is in accordance with its increased hydrophobicity due to the fluorinated side chain. The thermogravimetric analysis of compounds 1 and 2 shows that they are thermally stable up to about 290 ◦C.
A. Beyaz et al., "Synthesis and CMC Studies of 1-methyl-3-(pentafluorophenyl)methylimidazolium Quaternary Salts," Colloids and Surfaces: Biointerfaces, Elsevier, Jul 2004.
The definitive version is available at http://dx.doi.org/10.1016/j.colsurfb.2004.04.009
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