Thermodynamics of amine+ketone mixtures 3. Volumetric, speed of sound data and viscosity at (303.15 and 308.15K) for the binary mixtures of N,N-dimethylaniline+propiophenone, +p-methylacetophenone, +p-chloroacetophenone

Gowrisankar, M.; Venkateswarlu, P.; Kumar, K. Siva; Sivarambabu, S.

doi:10.1016/j.molliq.2012.06.010

Cited by 46 publications

(13 citation statements)

References 18 publications

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“…This is consistent study, which shows that under different circumstances, the π-π* transition and the ICT peak of the same substance are reinforced depending on the changes in the electron attracting strength. 39 This is also consistent with Bo et al's study, which exhibited a red-shift and a relative increase in the ICT peak, which is similar to the outcome of this study. In addition, the change in the absorbance was the greatest when the molecular weight increased for the same polymer.…”

Section: Optical-electrochemical Propertiessupporting

confidence: 93%

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Lee

Choi

Jeon

et al. 2016

Polym J

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Benzodithiophene-and quinoxaline (Qu)-based derivatives were used to obtain two kinds of D-π-A-type polymers, poly(diethylhexyloxy benzo dithiophene-dioctyloxy dithiophene diphenyl Qu) (PBDTAQ) and poly(diethylhexyloxy benzo dithiophene-dioctyloxy dithiophene dibenzophenazine (PBDTAFQ), through a Stille coupling reaction. Phenyl (Qu) and fused-phenyl (phenazine, Pz) were introduced in locations 2 and 3, respectively, of Qu derivatives. For the polymer introduced with Pz, the tilt angle (θ 3 ) between the 2,3-carbon and the bonded phenyl side chains of Qu decreased from 44.06°to 0°. As a result, PBDTAFQ displayed a higher absorbance compared with PBDTAQ at the UV-vis absorption spectra in the film state. Also, the intra/intermolecular charge transfer (ICT) peak intensity of 500-700 nm increased relative to the solution peak. Furthermore, the results of the X-ray diffraction measurement suggest that the d π -spacing distance for PBDTAFQ (d π = 3.89 Å) was smaller than that for PBDTAQ (d π = 4.36Å), exhibiting a stronger intermolecular interaction. PBDTAQ showed an edge-on dominant orientation, whereas the PBDTAFQ thin films showed an increase in the face-on structure for crystallinity. As a consequence, PBDTAFQ showed an improved short current density (J SC ) in organic photovoltaic cells. The PBDTAFQ:PC 70 BM blend-based devices that were fabricated exhibited a power conversion efficiency of 3.0% at a 1:5 ratio and reached 3.4% when treated with additive and methanol.

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Section: Optical-electrochemical Propertiessupporting

confidence: 93%

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Lee

Choi

Jeon

et al. 2016

Polym J

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“…This fact is well known as the transport phenomenon and thermo-physical properties of mixed solvents. The present study is a continuation of our earlier research [1][2][3][4] on thermodynamic properties of binary liquid mixtures. The liquids were chosen in the present investigation on the basis of their industrial importance.…”

Section: Introductionmentioning

confidence: 76%

Molecular interactions between amine and cyclic ketones at different temperatures

Sankar

Venkateswarlu

Kumar³

et al. 2013

J Therm Anal Calorim

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Measurement of densities q, viscosities g, and ultrasonic speeds u has been carried out for binary mixtures of N,N-diethylaniline (N,N-DEA) with acetophenone, cyclopentanone, cyclohexanone (CH), and 2-methylcyclohexanone (Me-CH) and their pure liquids at (303.15 and 308.15) K. These experimental data have been used to calculate the excess molar volume V E , deviation in ultrasonic velocity Du, deviation in isentropic compressibility Dj s , and deviation in viscosity Dg. The variation of these properties with composition of the mixtures suggests dipole-dipole interactions and charge-transfer complex formation between N,N-diethylaniline and dipolar ketones. The magnitude of the property is found to depend on the chain length of the ketones' molecule. The viscosity data have been correlated using three equations: Grunberg and Nissan (Nature 164:799-800, 1949), Katti and Chaudhri (J Chem Eng Data 9:442-443, 1964), and Hind et al. (Trans Faraday Soc 56:328-330, 1960). These results have been fitted to the Redlich-Kister polynomial using multiparametric nonlinear regression analysis to estimate the binary coefficients and standard errors.

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“…The components at different mole fractions show deviations in the parameters indicate the nature and extent of intermolecular interactions between the selected binary liquid mixtures. [3], b= Ref: [4], c= Ref: [5], d= Ref: [6] Apparatus and procedure…”

Section: Methodsmentioning

confidence: 99%

Acoustic, Volumetric and Viscometric Studies of Binary Liquid Mixtures of p-Chloroacetophenone with n-Alkanols at Different Temperatures

2018

Chem Sci Trans

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Density (ρ), speed of sound (u) and viscosity (η) have been measured for the binary liquid mixtures of p-chloroacetophenone with n-propanol, n-butanol, n-pentanol at all temperature range from 303.15 K to 318.15 K. From this experimental data, excess molar volume (v E ), deviation in viscosity (∆η), deviation in isentropic compressibility (∆ks) and excess Gibbs energy of activation of viscous flow (G* E ) have been calculated and fitted to Redlich-Kister polynomial equation. These excess parameters, reveals that there is a strong interaction between the unlike molecules. The analyzed viscosity data of binary liquid mixtures were used to test the Grunberg-Nissan, Katti chaudari and Hind semi-empirical equations.

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Thermodynamics of amine+ketone mixtures 3. Volumetric, speed of sound data and viscosity at (303.15 and 308.15K) for the binary mixtures of N,N-dimethylaniline+propiophenone, +p-methylacetophenone, +p-chloroacetophenone

Cited by 46 publications

References 18 publications

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Molecular interactions between amine and cyclic ketones at different temperatures

Acoustic, Volumetric and Viscometric Studies of Binary Liquid Mixtures of p-Chloroacetophenone with n-Alkanols at Different Temperatures

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