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Muldoon, Mark J.; McLean, Andrew J.; Gordon, Christopher P.; Dunkin, Ian R.

doi:10.1039/b107730a

Cited by 45 publications

(32 citation statements)

References 11 publications

(14 reference statements)

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“…The spectra in Bmim-TFSA are consistent with the spectrum recently measured in Bmim-PF 6 by Nishiyama et al 38 Therefore, as previously suggested, 18,19 hydrogen abstraction is slow in TMPA-TFSA.…”

Section: Resultssupporting

confidence: 90%

“…However, studies of the reaction of BP(T 1 ) in ILs are limited. 18,19,38 In TMPA-TFSA, the lifetime of BP(T 1 ) is reported to be 19 μs, which is substantially longer than the lifetimes in cyclohexane (300 ns), 2-propanol (5 ns), and benzene (3 μs). 19 In contrast, the lifetime of BP(T 1 ) in Bmim-TFSA has been reported to be 3 μs.…”

Section: Resultsmentioning

confidence: 96%

“…It has been suggested that BP (T 1 ) abstracts a hydrogen atom from the 2-position of the imidazolium ring of Bmim-TFSA. 18 In Fig. 2, transient absorption spectra after the excitation of BP with a 355-nm pulse in (a) TMPA-TFSA and in (b) Bmim-TFSA are shown.…”

Section: Resultsmentioning

confidence: 99%

“…For example, Muldoon et al found that the activation energy for hydrogen abstraction from imidazolium-based ILs (22 to 25 kJ/mol) by BP(T 1 ) is substantially higher than the energies observed in conventional solvents (13.7 kJ/mol in cyclohexane and 14.5 kJ/mol in toluene). 18 The activation energy is independent of the anionic component (PF 6 or (CF 3 SO 2 )N)) and the availability of the hydrogen atom at the 2-position of the imidazolium ring.…”

Section: Introductionmentioning

confidence: 99%

“…Several research groups have suggested that the faster translational diffusion in ILs is due to a large void volume produced by cations and anions. 18,34 Recently, Kimura's group 38,39 For spectral measurements, a system consisting of a 300-mm monochromator (ACTON, SpectraPro 2358i) and a gated intensified charge-coupled device camera (Princeton Instruments, PI-MAX-II, UNIGENII) was used. The wavelength response of the detector was corrected by comparing the fluorescence spectrum of Coumarin 153 with a reported reference spectrum.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Reactions of excited-state benzophenone ketyl radical in a room-temperature ionic liquid

Takahashi

Tezuka

Kitamura

et al. 2010

Phys. Chem. Chem. Phys.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Reactions of excited-state benzophenone ketyl radical in a room-temperature ionic liquid

Takahashi

Tezuka

Kitamura

et al. 2010

Phys. Chem. Chem. Phys.

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Luminescence in Crystalline Organic Materials: From Molecules to Molecular Solids

Gierschner

Shi

Milián‐Medina

et al. 2021

Advanced Optical Materials

175

194

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Luminescent small, all‐organic molecules are of tremendous interest in materials and life science applications. Nevertheless, targeted design requires a basic understanding of the excited state deactivation pathways of the molecules themselves, and the modulations of the processes that occur in the solid state. This particularly concerns crystalline molecular solids, as here not only solid‐state rigidification contributes to these modulations, but specific intermolecular interactions as well. Starting from the molecular properties, this work carefully disentangles all intramolecular and intermolecular factors to the radiative and nonradiative processes in crystalline all‐organic molecular solids to provide guidelines for targeted molecular materials design.

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Rationalisation of Solvent Effects in the DielsAlder Reaction Between Cyclopentadiene and Methyl Acrylate in Room Temperature Ionic Liquids

et al. 2005

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The Diels-Alder reaction between cyclopentadiene and methyl acrylate in ionic liquids has been studied in detail. The effect of contamination of the ionic liquids by common impurities, viz. sodium and chloride ions, and water, on the selectivity has been investigated. The presence of high concentrations of chloride was found to decrease the selectivity. Anion and, in particular, cation effects have been investigated using an extensive series of air-stable room temperature ionic liquids, and kinetic parameters have been determined. It has been found that strongly interacting groups, particularly electrophilic moieties on the cation, accelerate the formation of the endo products. Substrate solubility intimately connected to the selectivity was found to be mainly anion dependent. An NMR-based solvent parameter scale and semi-empirical models are used to analyse the results and provide a tool for the prediction of selectivities in ionic liquids.

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Abstract: The activation energy for hydrogen abstraction from imidazolium-based ionic liquids is significantly higher than that observed in conventional solvents.

Cited by 45 publications

References 11 publications

Reactions of excited-state benzophenone ketyl radical in a room-temperature ionic liquid

Reactions of excited-state benzophenone ketyl radical in a room-temperature ionic liquid

Luminescence in Crystalline Organic Materials: From Molecules to Molecular Solids

Rationalisation of Solvent Effects in the DielsAlder Reaction Between Cyclopentadiene and Methyl Acrylate in Room Temperature Ionic Liquids

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