The Dielectric Constant of Dioxane—Water Mixtures between 0 and 80°

Åkerlöf, Gösta; Short, Oliver A.

doi:10.1021/ja01298a044

Cited by 196 publications

(82 citation statements)

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“…An important difference between SiR-carboxyl and tetramethylrhodamine (TMR, Fig. 1a) is the higher propensity of SiR-carboxyl to form the non-fluorescent spirolactone in solvents of low dielectric constant 1, which we investigated by using dioxane-water mixtures 13 . SiR-carboxyl exists predominantly in its spirolactone form in dioxane-water mixtures of dielectric constant less than 30, conditions under which TMR remains predominantly in its open form (Fig.…”

Section: Resultsmentioning

confidence: 99%

A near-infrared fluorophore for live-cell super-resolution microscopy of cellular proteins

et al. 2013

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The ideal fluorescent probe for bioimaging is bright, absorbs at long wavelengths and can be implemented flexibly in living cells and in vivo. However, the design of synthetic fluorophores that combine all of these properties has proved to be extremely difficult. Here, we introduce a biocompatible near-infrared silicon-rhodamine probe that can be coupled specifically to proteins using different labelling techniques. Importantly, its high permeability and fluorogenic character permit the imaging of proteins in living cells and tissues, and its brightness and photostability make it ideally suited for live-cell super-resolution microscopy. The excellent spectroscopic properties of the probe combined with its ease of use in live-cell applications make it a powerful new tool for bioimaging.

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Section: Resultsmentioning

confidence: 99%

A near-infrared fluorophore for live-cell super-resolution microscopy of cellular proteins

et al. 2013

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“…Relative permittivities ε, (28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38) densities ρ, (28)(29)(30)(31)(32)(33) and other relevant quantities are quoted analogously to values of cells (II) and (III), respectively, it can be shown (8) that, at a given temperature T , their sum E is solely dependent on the m 2 γ ±2 /m 1 γ ±1 ratio:…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of the amalgam cell {KxHg1−x| KCl (m)| AgCl | Ag }and primary medium effects upon KCl in { ethylene glycol + water }, { acetonitrile + water }, and { 1,4-dioxane + water } solvent mixtures

Manzoni

Mussini

2000

The Journal of Chemical Thermodynamics

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“…22 It has been reported that the addition of AC, ACN, DIX and THF to water alter the permittivity to values lower than that of pure water. [48][49][50] Specifically, the formation of β-PMo12 would be related to the permittivity of the solvent, although it was irrelevant to the yield of β-PMo12 as well as the rate of the isomerization reaction.…”

Section: Discussionmentioning

confidence: 99%

Effects of Organic Solvents and Salts on the Isomerization Reaction (β→α) of Keggin-type 12-Molybdophosphate Anion

Ueda

Isai

2013

ANAL. SCI.

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Experimental Reagents and chemicalsAll of the chemicals were of analytical grade, and were used without further purification. Mo(VI) and P(V) stock solutions were prepared from Na2MoO4·2H2O and NaH2PO4·2H2O, The isomerization reaction of the β-form of 12-molybdophosphate ([PMo12O40] 3-: PMo12) into the α-form in aqueous-organic mixed media containing various salts was extensively investigated with cyclic voltammetry. It was found that the concentration and type of organic solvent and salt strongly affected the rate of the isomerization reaction. When organic solvents with lower permittivity than water were used as auxiliary solvents, and high concentrations of salts were added to the reaction mixture, the β-form of PMo12 (β-PMo12) became more stable, leading to slow isomerization into the α-form (α-PMo12). Based on the results of this study, it is proposed that the isomerization reaction of β-PMo12 into α-PMo12 is caused by the attack of a proton on a corner-shared oxygen atom. Also, the variation of its reaction rate upon the addition of organic solvents and salts is due to interactions between both the protons and the solvents or anions, and between the cations and the PMo12 anion.

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The Dielectric Constant of Dioxane—Water Mixtures between 0 and 80°

Cited by 196 publications

References 0 publications

A near-infrared fluorophore for live-cell super-resolution microscopy of cellular proteins

A near-infrared fluorophore for live-cell super-resolution microscopy of cellular proteins

Thermodynamics of the amalgam cell {KxHg1−x| KCl (m)| AgCl | Ag }and primary medium effects upon KCl in { ethylene glycol + water }, { acetonitrile + water }, and { 1,4-dioxane + water } solvent mixtures

Effects of Organic Solvents and Salts on the Isomerization Reaction (β→α) of Keggin-type 12-Molybdophosphate Anion

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