Ionic liquid salt bridge based on tributyl(2-methoxyethyl)phosphonium bis(pentafluoroethanesulfonyl)amide for stable liquid junction potentials in highly diluted aqueous electrolyte solutions

Sakaida, Hideaki; Kitazumi, Yuki; Kakiuchi, Takashi

doi:10.1016/j.talanta.2010.10.024

Cited by 29 publications

(33 citation statements)

References 25 publications

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“…[16][17][18] This salt bridge (denoted as ILSB from now) can effectively eliminate the liquid junction potential generated in the reference electrode, even when the ionic strength of the sample solution is below 100 μmol dm -3 . [19][20]22 ILSB was incorporated to the reference electrode of a pH electrode and its superior performance was confirmed for 20 -200 μmol dm -3 H2SO4 solutions. The experimental pH values were in good agreement within 0.03 pH units of the theoretical pH values.…”

Section: Introductionmentioning

confidence: 95%

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Application of a pH Electrode Incorporating an Ionic Liquid Salt Bridge to the Measurement of Rainwater Samples

et al. 2017

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A pH electrode incorporating a reference electrode different from that in conventional electrodes was applied to the measurement of rainwater pH. The reference electrode utilizes a recently proposed ionic liquid salt bridge instead of a conventional potassium chloride salt bridge. The response time of this electrode was remarkably improved in rain sample pH measurements compared to that of conventional pH electrodes. In addition, the measured pH values of rain samples seemed to be more accurate with this electrode.

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Section: Introductionmentioning

confidence: 95%

“…[16][17][18][19][20][21][22][23][24] This electrode utilizes a reference electrode based on a new type of salt bridge with a completely different working principle. The new salt bridge relies on the partition of an ionic liquid (IL) instead of the diffusion of a concentrated KCl solution.…”

Section: Introductionmentioning

confidence: 99%

Application of a pH Electrode Incorporating an Ionic Liquid Salt Bridge to the Measurement of Rainwater Samples

et al. 2017

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“…188 Specifically, an ether-functionalized phosphonium IL, tributyl(2-methoxyethyl)phosphonium bis(pentafluoroethanesulfonyl)amide, exhibited stable liquid junction potentials when in contact with aqueous solutions with low ionic strength (as low as 1 µM), and thus is a foreseeable electrolyte for salt bridges in accurate determination of pH and other single ion activities. 42 In addition, this IL has a low solubility in water (0.2 mM at room temperature) and is more chemically stable in alkaline solutions than tetraalkylphosphonium salts.…”

Section: Applications Of Ether- and Hydroxyl-functionalized Ilsmentioning

confidence: 99%

Ether- and alcohol-functionalized task-specific ionic liquids: attractive properties and applications

2012

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In recent years, the designer nature of ionic liquids (ILs) has driven their exploration and exploitation in countless fields among the physical and chemical sciences. A fair measure of the tremendous attention placed on these fluids has been attributed to their inherent designer nature. And yet, there are relatively few examples of reviews which emphasize this vital aspect in an exhaustive or meaningful way. In this critical review, we systematically survey the physicochemical properties of the collective library of ether- and alcohol-functionalized ILs, highlighting the impact of ionic structure on features such as viscosity, phase behavior/transitions, density, thermostability, electrochemical properties, and polarity (e.g., hydrophilicity, hydrogen bonding capability). In the latter portions of this review, we emphasize the attractive applications of these functionalized ILs across a range of disciplines, including their use as electrolytes or functional fluids for electrochemistry, extractions, biphasic systems, gas separations, carbon capture, carbohydrate dissolution (particularly, the (ligno)celluloses), polymer chemistry, antimicrobial and antielectrostatic agents, organic synthesis, biomolecular stabilization and activation, and nanoscience. Finally, this review discusses anion-functionalized ILs, including sulfur- and oxygen-functionalized analogs, as well as choline-based deep eutectic solvents (DESs), an emerging class of fluids which can be sensibly categorized as semi-molecular cousins to the IL. Finally, the toxicity and biodegradability of ether- and alcohol-functionalized ILs are discussed and cautiously evaluated in light of recent reports. By carefully summarizing literature examples on the properties and applications of oxy-functional designer ILs up till now, it is our intent that this review offer a barometer for gauging future advances in the field as well as a trigger to spur further contemplation of these seemingly inexhaustible and—relative to their potential—virtually untouched fluids. It is abundantly clear that these remarkable fluidic materials are here to stay, just as certain design rules are slowly beginning to emerge. However, in fairness, serendipity also still plays an undeniable role, highlighting the need for both expanded in silico studies and a beacon to attract bright, young researchers to the field.

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“…Kakiuchi showed that with an ILSB the parts A are eliminated in these all‐aqueous cells using [TBMOEP] + [BETI] − as an IL (=[(CH 3 ‐O‐CH 2 ‐CH 2 )P( n Bu) 3 ] + [N(SO 2 C 2 F 5 ) 2 ] − ) . The limiting ion conductivities of the cation and anion of this IL were estimated to be equal in water, and is one of the specifications of an ideal ILSB as discussed in Part I . However, neither the ionic mobilities or diffusion coefficients within other solvents (including the pure IL itself), nor the ionicity of this IL are published.…”

Section: Figurementioning

confidence: 99%

The Ideal Ionic Liquid Salt Bridge for Direct Determination of Gibbs Energies of Transfer of Single Ions, Part II: Evaluation of the Role of Ion Solvation and Ion Mobilities

et al. 2018

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An important intermediate goal to evaluate our concept for the assumption-free determination of single-ion Gibbst ransfer energies D tr G8 8(i, S 1 !S 2 )i sp resented. We executed the crucial steps a) and b) of the methodology, described in Part Iofthis treatise,exemplarily for Ag + and Clwith S 1 being water and S 2 being acetonitrile.The experiments showed that virtually all parts of the liquid junction potentials (LJPs) at both ends of as alt bridge cancel, if the bridge electrolyte is an "ideal" ionic liquid, that is,o ne with nearly identical diffusion of anion and cation. This ideality holds for [N 2225 ] + [NTf 2 ]in the pure IL, but also in water and acetonitrile solution. Electromotive force measurements of solvation cells between S 1 and S 2 demonstrated Nernstian behavior for Ag + concentration cells and constant like cell potentials for solutions with five tested Ag + counterions.

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Ionic liquid salt bridge based on tributyl(2-methoxyethyl)phosphonium bis(pentafluoroethanesulfonyl)amide for stable liquid junction potentials in highly diluted aqueous electrolyte solutions

Cited by 29 publications

References 25 publications

Application of a pH Electrode Incorporating an Ionic Liquid Salt Bridge to the Measurement of Rainwater Samples

Application of a pH Electrode Incorporating an Ionic Liquid Salt Bridge to the Measurement of Rainwater Samples

Ether- and alcohol-functionalized task-specific ionic liquids: attractive properties and applications

The Ideal Ionic Liquid Salt Bridge for Direct Determination of Gibbs Energies of Transfer of Single Ions, Part II: Evaluation of the Role of Ion Solvation and Ion Mobilities

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