Dielectric Constant Correlations with Solubility and Solubility Parameters

Gorman, William G.; Hall, Gary D.

doi:10.1002/jps.2600530905

Cited by 39 publications

(13 citation statements)

References 2 publications

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“…While pilocarpic acid can be detected by the official methods (8)(9)(10), neither isomerization to isopilocarpine nor differentiation from pilocarpine in pharmaceutical preparations has been reported until now.…”

Section: Discussionmentioning

confidence: 99%

Solution thermodynamics of alkyl p‐aminobenzoates

Schwartz

Paruta

1976

Journal of Pharmaceutical Sciences

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Section: Discussionmentioning

confidence: 99%

Solution thermodynamics of alkyl p‐aminobenzoates

Schwartz

Paruta

1976

Journal of Pharmaceutical Sciences

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“…Different solvents resulted in varying ETL surface morphologies, and the key to such variations lies in the solubility of PCBM in the solvent and the volatility of the solvent. Solubility is proportional to the dielectric constant; thus, a higher dielectric constant leads to greater solubility [31]. The order of the dielectric constants of the ELT solvents was DCB > CB > CF > MB, with MB exhibiting less favorable solubility for PCBM compared with the other three solvents.…”

Section: Characterization Of the Etlsmentioning

confidence: 97%

Investigation of the Effects of Various Organic Solvents on the PCBM Electron Transport Layer of Perovskite Solar Cells

2020

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In this study, four organic solvents including 1,2-dichlorobenzene (DCB), chlorobenzene (CB), methylbenzene (MB), and chloroform (CF) were used as solvents in the [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) electron transport layer (ETL) of perovskite solar cells (PSCs). This study observed the effects of various solvents on the surface morphology of the ETL by using an optical microscope (OM) and scanning electron microscope (SEM). The surface roughness, crystal structure, and surface element bonding of the ETL were observed using an atomic force microscope (AFM), X-ray diffractometer (XRD), and X-ray photoelectron spectroscope (XPS), respectively. The absorption spectrum of the perovskite layer was explored using an ultraviolet-visible (UV-Vis) spectrometer. The characteristics of the PSC device were analyzed in terms of its current density–voltage (J–V) curve, external quantum efficiency (EQE), and electrochemical impedance spectroscopy (EIS) measurements. The results showed that DCB is a solvent with a high boiling point, low vapor pressure, and high dielectric constant, and using DCB as the solvent for ETL, the uniformity, coverage, and surface roughness of the ETL showed better properties. The power conversion efficiency of the PSC in which DCB was used as the solvent achieved a value of 11.07%, which was higher than that of the PSCs in which other solvents were used.

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“…PG is a semi-polar hydrophilic chemical with dielectric constants (ε) of 32. A solvent might be classified as semi-polar if its ε-value lies between 20 and 50 [15]. PF is a salt with high solubility in water and, hence, is found in water in its dissociated form.…”

Section: Water Quality Analysismentioning

confidence: 99%

Potential of Biofilters for Treatment of De-Icing Chemicals

Raspati

Lindseth

Muthanna

et al. 2018

Water

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Organic de-icing chemicals, such as propylene glycol and potassium formate, cause environmental degradation in receiving water if left untreated, due to the high organic load resulting in oxygen depletion. Biofilters are commonly used for the treatment of biodegradable organic carbon in water treatment. This study investigated the potential for using biofilters for treating organic de-icing compounds. Lab-scale adsorption tests using filter media made of crushed clay (Filtralite) and granular activated carbon were conducted. Further, a column filtration experiment testing two different crushed clay size ranges was carried out investigating the effect of filter media depth, nutrient addition, and filtration rate. The surrogate parameter used to monitor the removal of de-icing chemicals was dissolved organic carbon (DOC). The adsorption test showed no significant adsorption of DOC was observed. The column test showed that the most active separation occurred in the first~20 cm of the filter depth. This was confirmed by results from (1) water quality analysis (i.e., DOC removal and adenosine tri-phosphate (ATP) measurement); and (2) calculations based on a filtration performance analysis (Iwasaki model) and filter hydraulic evaluation (Lindquist diagram). The results showed that, for the highest C:N:P ratio tested (molar ratio of 24:7:1), 50-60% DOC removal was achieved. The addition of nutrients was found to be important for determining the biofilter performance.

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Dielectric Constant Correlations with Solubility and Solubility Parameters

Cited by 39 publications

References 2 publications

Solution thermodynamics of alkyl p‐aminobenzoates

Solution thermodynamics of alkyl p‐aminobenzoates

Investigation of the Effects of Various Organic Solvents on the PCBM Electron Transport Layer of Perovskite Solar Cells

Potential of Biofilters for Treatment of De-Icing Chemicals

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