Electrotransport and thermal properties of tetrabutylammonium hydrogen sulfate

Пономарева, В. Г.; Bagryantseva, I. N.; Uvarov, N. F.

doi:10.1007/s11581-021-03979-1

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…In general, [R 4 P] 2 SO 4 salts are more thermally stable than [R 4 P]HSO 4 , as it can be judged from the DSC peaks and onset values, and has the fastest rate of mass loss, Table 4. The tetraalkylphosphonium salts appear more thermally stable than the corresponding ammonium salts, even by more than 60 °C as for TBPHS and its ammonium analogue, 54 or more than 10 °C for TMPS and TEPHS. 47,53 According to the expectations, increasing the length of alkyl chains from methyl to butyl decreases the melting point for each tetraalkylphosphonium salt, as larger cations could not be incorporated into the crystal structure as easily.…”

Section: Tga/dsc/ms Measurementsmentioning

confidence: 96%

Synthesis and structural trends in a series of simple tetraalkylphosphonium salts

Gawraczyński,

Leszczyński,

Cyrański

et al. 2024

CrystEngComm

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Section: Tga/dsc/ms Measurementsmentioning

confidence: 96%

Synthesis and structural trends in a series of simple tetraalkylphosphonium salts

Gawraczyński,

Leszczyński,

Cyrański

et al. 2024

CrystEngComm

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“…[13][14][15] Various ILs derived from tetraalkylammonium hydrogen sulfate compounds, such as [TMPSA][HSO 4 ], [TMBSA][HSO 4 ], and [TBPSA][HSO 4 ], have been used as inexpensive alternatives for synthesizing chalcone derivatives. [16] These ILs contain hydrogen sulfate groups that function as both Brønsted acids and catalysts. [17] However, their use as a reaction medium still presents some drawbacks, including the need to regulate the acidity level during the sulfonation step, which involves additional complex procedures.…”

Section: Introductionmentioning

confidence: 99%

“…Various ILs derived from tetraalkylammonium hydrogen sulfate compounds, such as [TMPSA][HSO 4 ], [TMBSA][HSO 4 ], and [TBPSA][HSO 4 ], have been used as inexpensive alternatives for synthesizing chalcone derivatives [16] . These ILs contain hydrogen sulfate groups that function as both Brønsted acids and catalysts [17] .…”

Section: Introductionmentioning

confidence: 99%

An Experimental and Computational Approach to The Microwave‐Assisted Synthesis of 2’‐Hydoxychalcone Derivatives in 1‐Dodecyl‐3‐Methylimidazolium Bromide ([DDMIm]Br) Ionic Liquids

Wahyuningrum,

Nur Pasya,

Eduardus

et al. 2024

ChemistrySelect

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Four derivatives of 2’‐hydoxychalcone were synthesized through Claisen‐Schmidt condensation by combining 2’‐hydroxyacetophenone and four different benzaldehyde derivatives (o‐vanillin, salicylaldehyde, p‐anisaldehyde, and benzaldehyde) in the presence of a base. The reactions took place in an ionic liquid, 1‐dodecyl‐3‐methylimidazolium bromide ([DDMIm]Br), and were facilitated by microwave irradiation. The reactions were completed within 10 to 15 minutes, yielding products with chemical yields ranging from 52.64 % to 83.42 %. The structures of the synthesized products were confirmed using 1H NMR and 13C NMR spectroscopy. Additionally, antimicrobial activity tests demonstrated the effectiveness of specific derivatives against Staphylococcus aureus and Escherichia coli, underscoring the importance of hydroxy and methoxy groups on the aromatic ring in inhibiting microbial growth. These findings provide valuable knowledge for developing chalcone derivatives with improved properties and potential applications in drug discovery. Furthermore, the synthesized products′ reactivity was analyzed using Frontier Molecular Orbital (FMO) and their reactivity site was mapped using Molecular Electrostatic Potential (MEP). Lastly, molecular docking analysis was attempted to explain antibacterial activities from all products. Nonetheless, the molecular docking simulations conducted in this study were inadequate to fully account for the antimicrobial activity observed in all the products.

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“…As for the subgroup of quaternary ammonium hydrogen sulfates, such as methyl-(Me), -ethyl (Et), -propyl (Pr) and -butyl (Bu) ammonium, their structural, thermodynamic and electrotransport properties have not been studied enough. Recently, data have appeared on the structural properties and proton conductivities of Bu 4 NHSO 4 [24,25] and Et 4 NHSO 4 [26,27] compounds. As a rule, an increase in the length of the carbon chain of an alkyl group leads to a decrease in the melting temperature and a change in the symmetry of the unit cell from orthorhombic to monoclinic.…”

Section: Introductionmentioning

confidence: 99%

“…The nature of the temperature dependence of the conductivity corresponds to the structural phase transitions of Et 4 NHSO 4 . A sequence of reversible phase transitions was established at 147 • C and 160 • C with enthalpies of −3.28 and −8.99 J/g, respectively [24,27]. Given the large size of Et 4 N + , the cationic subsystem constitutes the less mobile core of the crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

Stabilization of the (C2H5)4NHSO4 High-Temperature Phase in New Silica-Based Nanocomposite Systems

et al. 2022

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In this study, the electrotransport, thermal and structural properties of composite solid electrolytes based on (C2H5)4NHSO4 plastic phase and silica (1 − x)Et4NHSO4−xSiO2, where x = 0.3–0.9) were investigated for the first time. The composites were prepared by mechanical mixing of silica (300 m2/g, Rpore = 70Å) and salt with subsequent heating at temperatures near the Et4NHSO4 melting point. Heterogeneous doping is shown to change markedly the thermodynamic and structural parameters of the salt. It is important that, with an increase in the proportion of silica in the composites, the high-temperature disordered I41/acd phase is stabilized at room temperature, as this determines the properties of the system. Et4NHSO4 amorphization was also observed in the nanocomposites, with an increase in the matrix contents. The enthalpies of the endoeffects of salt melting and phase transitions (160 °C) changed more significantly than the Et4NHSO4 contents in the composites and completely disappeared at x = 0.9. The dependence of proton conductivity on the mole fraction reached a maximum at x = 0.8, which was three or four orders of magnitude higher than the value for pure Et4NHSO4, depending on the composition and the temperature. The maximum conductivity values were close to those for complete pore filling. The conductivity of the 0.2Et4NHSO4-0.8SiO2 composite reached 7 ∗ 10−3 S/cm at 220 °C and 10−4 S/cm at 110 °C.

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Electrotransport and thermal properties of tetrabutylammonium hydrogen sulfate

Cited by 5 publications

References 23 publications

Synthesis and structural trends in a series of simple tetraalkylphosphonium salts

Synthesis and structural trends in a series of simple tetraalkylphosphonium salts

An Experimental and Computational Approach to The Microwave‐Assisted Synthesis of 2’‐Hydoxychalcone Derivatives in 1‐Dodecyl‐3‐Methylimidazolium Bromide ([DDMIm]Br) Ionic Liquids

Stabilization of the (C2H5)4NHSO4 High-Temperature Phase in New Silica-Based Nanocomposite Systems

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