Thermodynamic investigation of N,N-dimethylformamide/toluene binary mixtures in the temperature range from 278.15 to 293.15K

Tsierkezos, Nikos G.; Filippou, Alexander C.

doi:10.1016/j.jct.2005.10.008

Cited by 66 publications

(63 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The solvent surface tensions can be transformed into surface energy using a universal value for surface entropy of ca. 0.1 mJ m À2 K À1 [19,23,24] (the top axis of Fig. 2A) demonstrating that successful solvents have a surface energy very close to literature values of nanotube/ graphite surface energy, [25][26][27][28] which we can now estimate to be ca.…”

Section: à2supporting

confidence: 63%

Towards Solutions of Single‐Walled Carbon Nanotubes in Common Solvents

et al. 2008

View full text Add to dashboard Cite

Spontaneous exfoliation of single‐walled carbon nanotubes on dilution of dispersions in a common solvent, N‐methyl‐pyrrolidone, is demonstrated. The free‐energy of mixing is negative, confirming athermal solubility. Scanning tunneling microscopy measurements show physisorption of the solvent to the nanotube (see figure). Experiments, supported by a simple model, show that successful solvents for nanotubes are those with surface tensions close to that of graphite.

show abstract

Section: à2supporting

confidence: 63%

Towards Solutions of Single‐Walled Carbon Nanotubes in Common Solvents

et al. 2008

View full text Add to dashboard Cite

show abstract

“…In DMF dimer a1, O 1 and O 13 have reduced by 0.0007, 0.0482e, respectively, and H 6 , H 23 which react with O 1 , O 13 have increased by 0.0741, -0.0251e. One of DMF molecules has totally transferred 0.0313e in the system, so the geometrical structure is not symmetrical.…”

Section: Charge Distributionmentioning

confidence: 96%

“…Furthermore, the distances of O 13 range of hydrogen bond. As we all know, the more changes are, the stronger interaction between molecules is.…”

Section: Geometriesmentioning

confidence: 99%

“…The studies which have been performed on intermolecular interactions between DMF and other molecules mainly focus on two aspects: one is based on macroscopic thermodynamics, it researches the intermolecular interactions in the systems by observed changes of the thermodynamic properties, for example, densities (q), excess molar volumes, surface tensions (r), and absolute viscosities (g) of binary mixtures of N, N-dimethylformamide with benzene, toluene, 2-chloroethanol, or N-alkylamides at various temperatures [12][13][14][15][16][17]. These researches have been demonstrated that there are interactions between DMF and other molecules.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A theoretical study of the interactions between N, N-dimethylformamide and aromatic hydrocarbons

et al. 2007

View full text Add to dashboard Cite

The B3LYP and MP2 methods with 6-31G* basis set were used to predict the geometries of N, N-dimethylformamide (DMF) dimer and DMF-aromatic hydrocarbons interaction systems. A total of 10 conformers were obtained with no imaginary frequencies, respectively. The interaction energies of these binary mixtures have been obtained. The analyses of chelpg charge distribution and the atoms in molecules theory (AIM) were used to analyze the nature of the interaction. The results show the presence of hydrogen bonds between DMF and aromatic hydrocarbons. The interaction between DMF and benzonitrile is the strongest with the interaction energy of -21.58 kJ mol -1 (BSSE corrected), and the intensity order of interactions is DMF-benzonitrile: d2 > DMF-DMF: a2 > DMF-toluene: c1 > DMF-benzene: b2.

show abstract

“…A DMF molecule can interact with an alkanol molecule by virtue of better hydrogen bond acceptor ability of its oxygen atom, resulting in structural and packing effects. Volumetric, viscometric and related thermodynamic properties for the mixtures containing DMF were recently reported in the literature [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 97%

A study on Volumetric and Viscometric Properties for the Mixtures of DMF and Other Alcohols from Temperatures ranges 303.15K to 323.15K

Khan

Uddin

Islam

et al. 2015

JNS

View full text Add to dashboard Cite

Densities, ρ, and viscosities, η, of four binary systems: N,N-dimethyl formamide (DMF) + 1-propanol, DMF + 2-propanol, DMF + butanol and DMF + 1-pentanol have been measured at five different temperatures ranging form 303.15K to 323.15K at an interval of 5K. Excess molar volumes were found to be negative over the entire concentration ranges. The negative excess molar volume decreases with the increase of chain length of alcohol, the magnitude follows the order DMF+ 1-propanol >, + 2-propanol >, + butanol >, + 1-pentanol. The change of viscosity has been found to be sensitive to the chain length of alcohols. Excess viscosities and Grunberg-Nissan interaction parameters have been found to be positive for DMF + 1-propanol and DMF + 2-propanol systems, and negative for other two systems DMF + butanol and DMF + 1-pentanol. The thermodynamic energy of activation; such as, positive ΔG #E each also compatible with the observation.

show abstract

Thermodynamic investigation of N,N-dimethylformamide/toluene binary mixtures in the temperature range from 278.15 to 293.15K

Cited by 66 publications

References 68 publications

Towards Solutions of Single‐Walled Carbon Nanotubes in Common Solvents

Towards Solutions of Single‐Walled Carbon Nanotubes in Common Solvents

A theoretical study of the interactions between N, N-dimethylformamide and aromatic hydrocarbons

A study on Volumetric and Viscometric Properties for the Mixtures of DMF and Other Alcohols from Temperatures ranges 303.15K to 323.15K

Contact Info

Product

Resources

About