Ionic Liquid-Tethered Nanoparticle Suspensions: A Novel Class of Ionogels
AuthorsMoganty, Surya S.
Schaefer, Jennifer L.
Rizvi, Salmaan A.
Archer, Lynden A.
KAUST Grant NumberKUS-C1-018-02
Online Publication Date2012-03-27
Print Publication Date2012-04-10
Permanent link to this recordhttp://hdl.handle.net/10754/598674
MetadataShow full item record
AbstractWe report a novel class of silica ionogels created by dispersing silica nanoparticles densely grafted with the ionic liquid (IL) 1-trimethoxysilyl propyl-3-methyl-imidazolium bis- (trifluoromethylsulfonyl) imide (SpmImTSFI) in a 1-butyl-3- methyl-pyrrolidinium bis(trifluoromethylsulfonyl) imide (BmpyrTFSI) IL host. We find that over the entire range of nanoparticle volume fractions studied the systems exist as stable suspensions of SiO 2-SpmImTFSI in the BmpyrTFSI host. Remarkably, we also find that addition of even minute quantities of SiO 2-SpmImTFSI to the BmpyrTFSI IL suppresses crystallization of the host. The resulting disordered hybrid fluids exhibit liquid-like transport properties over a vastly extended temperature range; they open the way for facile synthesis of ILs with extended operating temperature windows. These observations are explained in terms of ionic coupling of the nanoparticle-tethered and free TFSI anions, which is thought to suppress crystallization of BmpyrTFSI. © 2012 American Chemical Society.
CitationMoganty SS, Srivastava S, Lu Y, Schaefer JL, Rizvi SA, et al. (2012) Ionic Liquid-Tethered Nanoparticle Suspensions: A Novel Class of Ionogels. Chem Mater 24: 1386–1392. Available: http://dx.doi.org/10.1021/cm300424v.
SponsorsThis work was supported by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST), and by the National Science Foundation, Award No. DMR-1006323. J.S. acknowledges support from a National Science Foundation Energy & Sustainability IGERT fellowship program at Cornell.
PublisherAmerican Chemical Society (ACS)
JournalChemistry of Materials