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Ionic Liquids
Items for "Ionic Liquids"
Relaxation Dynamics upon Ultrashort UV Photo-Excitation of an Iodide Doped Ionic Liquid and of a Pure Lithium Iodide Melt
The ultrafast dynamics of photolytically generated solvated electrons were investigated for the first time in a pure lithium iodide (LiI) melt at 480 °C and in an iodide doped room-temperature ionic liquid...
Keywords: Femtosecond Spectroscopy, Ionic Liquids, Solvated Electrons, Pump-Probe
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagCoating of Mild Steel by Aluminium in the Ionic Liquid [EMIm]Tf2N and its Corrosion Performance
The present paper shows for the first time that dense, adherent aluminium layers can be electrodeposited on mild steel in the water and air stable ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide [EMIm]Tf2N containing AlCl3 as a source of aluminium...
Keywords: Electroplating, Aluminium, Mild Steel, Ionic Liquids, Corrosion
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagSemi-Empirical Methods to Predict the Physical Properties of Ionic Liquids: An Overview of Recent Developments
The field of ionic liquids (ILs) has shown rapid growth in recent years. Much of this work has involved the synthesis of new ILs and their application in an ever-increasing number of areas...
Keywords: Ionic Liquids, Physical properties, Quantitative Predictions, Molecular Volumes, Volume-Based Thermodynamics
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagWater Vibrational Bands as a Polarity Indicator in Ionic Liquids
With a combination of FTIR and ab initio calculations we studied the structure of water molecules confined in ionic liquids (ILs)...
Keywords: Ionic Liquids, Polarity, Infrared spectroscopy, Ab Initio Calculations
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagProbing Lithium and Alumina Impurities in Air- and Water Stable Ionic Liquids by Cyclic Voltammetry and In Situ Scanning Tunneling Microscopy
In this paper we report on some results on the electrochemical breakdown of ionic liquids at the cathodic limit of the electrochemical window and on the probing of inorganic impurities in ionic liquids (originating from the synthesis) at the interface electrode/electrolyte by in situ scanning tunneling microscopy on Au(111)...
Keywords: Ionic Liquids, Inorganic Impurities, In Situ STM, Cyclic voltammetry
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagThe Static Dielectric Constant of Ionic Liquids
The static dielectric constant of an ionic liquid is not measurable by conventional methods because the samples are largely short-circuited by their intrinsic electrical conductance...
Keywords: Ionic Liquids, Dielectric Spectroscopy, Static Dielectric Constant, Solvent Polarity, Solvatochromic Effect
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagPhase Separation in Solutions of Room Temperature Ionic Liquids in Hydrocarbons
The room temperature ionic liquids (RTIL) trihexyl-tetradecyl phosphonium chloride (P666 14Cl) and the bromide (P666 14Br) are soluble in hydrocarbons...
Keywords: Ionic Liquids, Corresponding State, Phase Diagrams, Critical Phenomena
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagSurface Studies on the Ionic Liquid 1-Ethyl-3-Methylimidazolium Ethylsulfate Using X-Ray Photoelectron Spectroscopy (XPS)
Surface studies of ionic liquids are particularly important for all kinds of multiphasic operations employing ionic liquids, e.g. biphasic homogeneous catalysis or supported ionic liquid phase catalysis...
Keywords: Ionic Liquids, XPS, Surface, Composition, Orientation
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagTemplating and Phase Behaviour of the Long Chain Ionic Liquid C16mimCl
In the light of recent studies about the favourable sol–gel templating behaviour of the long chain ionic liquids (ILs) 1-hexadecyl-3-methylimidazolium chloride and -bromide (C16mimCl and C16mimBr) the phase behaviour of these ILs is investigated in detail and compared to common surfactants such as hexadecyltrimethylammonium chloride and -bromide (CTAC and CTAB)...
Keywords: Ionic Liquids, Phase Behavior, SolGel Templating
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagPreparation of CdSe Quantum Dots in Ionic Liquids
Quantum dots are nanocrystalline semiconductors that have potential applications across many fields ranging from electronics (LEDs, photovoltaics) to the life sciences (fluorescent tags for biological molecules)...
Keywords: Quantum Dots, Ionic Liquids, Fluorescence, Nano Particles
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagEnthalpies of Solution of Organic Solutes in the Ionic Liquids [Me3BuN][NTf2] and [EMIM][EtSO4]
Partial molar enthalpies of solution of 11 systems [Me3BuN][NTf2] + methanol, + ethanol, + 1-propanol, + 1-butanol, + benzene and [EMIM][EtSO4] + methanol, + ethanol, + 1-propanol, + 1-butanol, + CHCl3, + H2O have been measured at 298.15 K in the mole fraction range 1% to 25% of the solutes using a precision titration calorimeter (Thermal Activity Monitor 2277, Thermometrics)...
Keywords: Ionic Liquids, Partial Molar Enthalpies, Titration Calorimetry, Thermodynamics
10/2006 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagEquilibrium Partitioning of Phenols and Phenyl Amines between [BF4]- Based Ionic Liquids and Aqueous Solution
In this paper, ionic liquids [C6mim][BF4] and [C8mim][BF4] have been used, for the first time, as alternative solvents for the extraction of organic pollutants such as phenols and phenyl amines from aqueous solution...
Keywords: Extraction, Phenols, Phenyl Amines, Ionic Liquids
06/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagAggregation Behavior of Imidazolium-Based Ionic Liquids in Water
The UV absorption spectra of aqueous solutions of [C4mim][Br], [C4mim][BF4], and [C8mim][Br], along with the differential UV spectra of aqueous [C8mim][Br] solutions, were measured at room temperature in this work...
Keywords: Ionic Liquids, aggregation, UV Spectra
08/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagIn Situ Scanning Tunnelling Microscopy in Ionic Liquids: Prospects and Challenges
In this paper devoted to Professor Dieter Kolbīs 65th birthday the prospects and challenges of ionic liquids for fundamental investigations at the interface electrode/electrolyte are discussed...
Keywords: Ionic Liquids, In-Situ STM, Electrodeposition, Probing Impurities
09/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagPrecursor Adsorption of SbBr3 on Au(111) and Au(100) for Antimony Underpotential Deposition in a BMIBF4 Ionic Liquid – A Comparison with SbCl3
By employing in-situ STM, we have studied precursor adsorption and initial stage of Sb UPD on Au(111) and Au(100) in a SbBr3-containing BMIBF4 ionic liquid...
Keywords: Ionic Liquids, In-Situ STM, Antimony Tri-Halides, UPD, Adsorption
09/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagA Refined All-Atom Model for the Ionic Liquid 1-n-Butyl 3-Methylimidazolium bis(Trifluoromethylsulfonyl)imide [bmim][Tf2N]
A refined flexible all-atom model for a room temperature ionic liquid, 1-n-butyl 3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][Tf2N]), is reported here...
Keywords: Ionic Liquids, molecular modelling, Force Field, molecular dynamics
11/2007 | Zeitschrift für Physikalische Chemie, Oldenbourg WissenschaftsverlagTRLFS and EXAFS investigations of lanthanide and actinide complexation by triflate and perchlorate in an ionic liquid
The solvation of the Eu-perchlorate (ClO4–) and triflate (CF3SO3–, OTf–) salts as well as of Cm(ClO4)3 and Am(ClO4)3 in the ionic liquid C4mimTf2N (1-butyl-3-methylimidazolium-bis(trifluoromethylsulfonyl)imide) has been comparatively investigated by application of laser fluorescence spectroscopy and X-ray absorption spectroscopy...
Keywords: Ionic Liquids, Lanthanides, Actinides, Eu(III), Cm(III)
01/2008 | Radiochimica Acta, Oldenbourg WissenschaftsverlagNanocrystalline Metals Prepared by Electrodeposition
An overview is presented about the preparation of nanocrystalline metals by pulsed electrodeposition out of aqueous electrolytes and ionic liquids...
Keywords: Pulsed Electrodeposition, Nanocrystalline, Nano Metals, Fuel Cell Catalysts, Ionic Liquids
02/2008 | Zeitschrift für Physikalische Chemie, Oldenbourg Wissenschaftsverlag