Surface Characterization of 1-Butyl-3-methylimidazolium Br-, I-, PF6-, BF4-, (CF3SO2)2N-, SCN-, CH3SO3-, CH3SO4-, and (CN)2N- Ionic Liquids by Sum Frequency Generation

Rivera-Rubero, Selimar; Baldelli, Steven

doi:10.1021/jp0563989

Cited by 169 publications

(232 citation statements)

References 63 publications

Supporting

Mentioning

206

Contrasting

Order By: Relevance

“…[80][81][82] Lithium bis(trifluoromethanesulfonyl)imide (99 %) was purchased from Iolitec; 1-ethyl-2,3 dimethylimidazolium chloride (! 98 %) and N,N,N-trimethyl-N-butylammonium chloride (98 %) were from Merck; 1-decylbromide (98 %), 1-methylimidazole (99 %), ethanol (p.a.…”

Section: Methodsmentioning

confidence: 99%

Sonochemical Synthesis of 0D, 1D, and 2D Zinc Oxide Nanostructures in Ionic Liquids and Their Photocatalytic Activity

Alammar

Mudring

2011

ChemSusChem

View full text Add to dashboard Cite

Ultrasound synthesis of zinc oxide from zinc acetate and sodium hydroxide in ionic liquids (ILs) is a fast, facile, and effective, yet highly morphology- and size-selective route to zinc oxide nanostructures of various dimensionalities. No additional organic solvents, water, surfactants, or templating agents are required. Depending on the synthetic conditions, the selective manufacturing of 0D, 1D, and 2D ZnO nanostructures is possible: Whereas the formation of rodlike structures is typically favored, ZnO nanoparticles can be obtained either under strongly basic conditions or by use of ILs with a long alkyl chain, such as 1-n-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C(n)mim][Tf(2)N]; n>8). A short ultrasound irradiation time favors the formation of ZnO nanosheets. Prolonged irradiation leads to the conversion of the ZnO nanosheets into nanorods. In contrast, ionothermal synthesis (conventional heating) does not allow for morphology tuning by variation of the IL or other synthesis conditions, as the longer reaction times required lead always to the formation of well-developed hexagonal nanocrystals with prismatic tips. The ZnO nanostructures synthesized by using ultrasound were efficient photocatalysts in the photodegradation of methyl orange. The photoactivity was observed to be as high as 95 % for ZnO nanoparticles obtained in [C(10)mim][Tf(2)N].

show abstract

Section: Methodsmentioning

confidence: 99%

Sonochemical Synthesis of 0D, 1D, and 2D Zinc Oxide Nanostructures in Ionic Liquids and Their Photocatalytic Activity

Alammar

Mudring

2011

ChemSusChem

View full text Add to dashboard Cite

show abstract

“…[273] Combined analysis by XPS and other surface analysis techniques including sum frequency generation, Rutherford backscattering spectroscopy, reflected infrared spectroscopy, and X-ray reflectivity have revealed the composition and structure of IL surfaces. [278][279][280][281] Furthermore, ultraviolet photoemission spectroscopy of ILs under vacuum conditions, which was first conducted by Yoshimura et al [282] , revealed the electronic structures of ILs in detail. [275,282,283] ILs possess negligible volatility at room temperature, but vaporization of some ILs was recognized by heating them under ultrahigh vacuum conditions.…”

Section: Analyses Under Vacuum Conditionsmentioning

confidence: 99%

New Frontiers in Materials Science Opened by Ionic Liquids

et al. 2010

View full text Add to dashboard Cite

Ionic liquids (ILs) including ambient-temperature molten salts, which exist in the liquid state even at room temperature, have a long research history. However, their applications were once limited because ILs were considered as highly moisture-sensitive solvents that should be handled in a glove box. After the first synthesis of moisture-stable ILs in 1992, their unique physicochemical properties became known in all scientific fields. ILs are composed solely of ions and exhibit several specific liquid-like properties, e.g., some ILs enable dissolution of insoluble bio-related materials and the use as tailor-made lubricants in industrial applications under extreme physicochemical conditions. Hybridization of ILs and other materials provides quasi-solid materials, which can be used to fabricate highly functional devices. ILs are also used as reaction media for electrochemical and chemical synthesis of nanomaterials. In addition, the negligible vapor pressure of ILs allows the fabrication of electrochemical devices that are operated under ambient conditions, and many liquid-vacuum technologies, such as X-ray photoelectron spectroscopy (XPS) analysis of liquids, electron microscopy of liquids, and sputtering and physical vapor deposition onto liquids. In this article, we review recent studies on ILs that are employed as functional advanced materials, advanced mediums for materials production, and components for preparing highly functional materials.

show abstract

“…Since the C2 proton is the one that presents the shortest H-Cl distance, 31 we assign the feature at 3016 cm 1 to the C2-H stretching mode and the other two features to the H-C4C5-H (asym) and H-C4C5-H (sym) stretching modes, respectively. Rivera-Rubero and Baldelli 36 have investigated the IR and Raman spectrum of IL derived from BMI C and different anions and also the deuterated forms of BMI C . The bands at 3110, 3160, and 3185 cm 1 observed in the Raman spectrum of BMIPF 6 were assigned to the C2-H, H-C4C5-H (sym) and H-C4C5-H (asym) stretching modes, respectively.…”

Section: The Raman Spectra Of Bmicl/nbcl 5 Ionic Mixturesmentioning

confidence: 99%

“…Figure 7 shows the observed shift in the Raman wavenumbers corresponding to the H-C4C5-H (sym) stretching near 3150 cm 1 and the C-H stretching of the CH 3 (butyl) 36 at ca 2956 cm 1 as a function of the X ZnCl 2 . Note that in both cases, there is a shift to higher wavenumbers as X ZnCl 2 increases, suggesting that the interaction of anionic species with these protons are decreasing as the X ZnCl 2 increases.…”

Section: The Raman Spectra Of Bmi/zncl 2 Ionic Mixturesmentioning

confidence: 99%

Raman spectroscopy of ionic liquids derived from 1‐n‐butyl‐3‐methylimidazolium chloride and niobium chloride or zinc chloride mixtures

Alves¹,

Santos²,

Soares³

et al. 2008

J Raman Spectroscopy

View full text Add to dashboard Cite

Anionic species formed in mixtures of 1-n-butyl-3-methylimidazolium chloride (BMICl) with different amounts of niobium pentachloride (NbCl 5 ) or zinc dichloride (ZnCl 2 ) were investigated by Raman spectroscopy. In the BMICl and NbCl 5 ionic mixtures the presence of the anion NbCl 6 − was detected for all compositions (molar fraction, X NbCl 5 ) and a mixture of this anion and the neutral Nb 2 Cl 10 in acid ones. Two different anions were observed for basic mixtures of BMICl and ZnCl 2 : ZnCl 4 2− .0 < X ZnCl 2 < 0.35/ and Zn 2 Cl 6 2− .X ZnCl 2 > 0.3/, whereas for acidic ones three species were detected: Zn 2 Cl 6 2− .X ZnCl 2 < 0.7/, Zn 3 Cl 8 2− .X ZnCl 2 > 0.7/ and Zn 4 Cl 10 2− .X ZnCl 2 > 0.7/. It has also been observed that in both cases, the formation of larger anions causes a shift of the C-H stretching modes to higher wavenumbers as the result of a decrease in the hydrogen bond between Cl and the hydrogens from the cation.

show abstract

Surface Characterization of 1-Butyl-3-methylimidazolium Br^-, I^-, PF₆^-, BF₄^-, (CF₃SO₂)₂N^-, SCN^-, CH₃SO₃^-, CH₃SO₄^-, and (CN)₂N^- Ionic Liquids by Sum Frequency Generation

Cited by 169 publications

References 63 publications

Sonochemical Synthesis of 0D, 1D, and 2D Zinc Oxide Nanostructures in Ionic Liquids and Their Photocatalytic Activity

Sonochemical Synthesis of 0D, 1D, and 2D Zinc Oxide Nanostructures in Ionic Liquids and Their Photocatalytic Activity

New Frontiers in Materials Science Opened by Ionic Liquids

Raman spectroscopy of ionic liquids derived from 1‐n‐butyl‐3‐methylimidazolium chloride and niobium chloride or zinc chloride mixtures

Contact Info

Product

Resources

About