60CO ?-radiolysis of N,N-dimethylformamide

Colebourne, N.; Collinson, E.; Dainton, F. S.

doi:10.1039/tf9635900886

Cited by 25 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…20,25 EPR studies also suggested that radicals 3 and 6 were not generated in radiolysis of DMF, 23,26 while H 2 NCO • was observed in radiolysis of formamide. 27 This is surprising, as cross recombination products traced to radical 3 were observed in product analyses.…”

Section: Introductionmentioning

confidence: 93%

Electron Localization and Radiation Chemistry of Amides

Shkrob

Marin

2012

J. Phys. Chem. A

View full text Add to dashboard Cite

Alkylamides (such as N,N'-dimethylformamide, N,N'-diethylformamide, and N,N'-dimethylacetamide) are aprotic solvents that are widely used in organic synthesis. These polar molecules have no electron affinity, and it is believed that irradiated liquid and solid amides stabilize excess electrons as cavity-type species analogous to hydrated and ammoniated electrons. In this study, we use isotope substitution and EPR spectroscopy to demonstrate that, in frozen amides, the suspected "cavity electron" is, in fact, a solvent-stabilized monomer anion. Our observations call into question other attributions of such features in the literature, both in low temperature solids and room temperature liquids. We also provide a general scheme describing amide radiolysis, as the related amides are used as metal ion extracting agents in nuclear separations.

show abstract

Section: Introductionmentioning

confidence: 93%

Electron Localization and Radiation Chemistry of Amides

Shkrob

Marin

2012

J. Phys. Chem. A

View full text Add to dashboard Cite

show abstract

“…The primary radiolytic process of DMF under g-ray irradiation is represented by eqn (1), where * denotes excitation. 31 (1)…”

Section: Characterization Of G-rgomentioning

confidence: 99%

Facile synthesis of well-dispersed graphene by γ-ray induced reduction of graphene oxide

et al. 2012

View full text Add to dashboard Cite

We demonstrate a facile and environmentally friendly approach to prepare well-dispersed graphene sheets by g-ray induced reduction of a graphene oxide (GO) suspension in N,N-dimethyl formamide (DMF) at room temperature. GO is reduced by the electrons generated from the radiolysis of DMF under g-ray irradiation. The reduced GO by g-ray irradiation (G-RGO) can be re-dispersed in many organic solvents, and the resulting suspensions are stable for two weeks due to the stabilization of N(CH 3 ) 2 + groups on G-RGO. Additionally, G-RGO is efficient in improving the conductivity of polystyrene (PS). Its PS nanocomposites exhibit a sharp transition from electrically insulating to conducting with a low percolation threshold of 0.24 vol% and a high electrical conductivity of 45 S m À1 is obtained with only 2.3 vol% of G-RGO. The superior electrical conductivity is attributed to the uniform dispersion of the G-RGO sheets in the PS matrix.

show abstract

“…The radiolysis of N, N, dimethyl formamide (DMF) under the γ-ray irradiation is shown by the chemical formula 1 below [37]. The DMF is protophylic aprotic solvent and a slightly weaker base.…”

Section: Resultsmentioning

confidence: 99%