Ionic liquids containing an ester group as potential electrolytes

Lee, J.S.; Quan, Nguyen Dinh; Hwang, J.M.; Bae, Jangho; Kim, H.; Cho, Byung Won; Kim, H.S.; Lee, H.

doi:10.1016/j.elecom.2006.01.009

Cited by 84 publications

(36 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The weight loss started at 235 C, estimated to be ~12.8%, could be ascribed to the introduction of three ester linkages in STIIL, which had slight lower thermal stability. This decomposition behavior compared well with that previously reporter determined by Kim and Lee and Yang et al [63,64] . They also found two distinct decomposition temperatures during their TGA test of ILs and attributed the weight loss at lower temperatures to the presence of methyl acetate group in their samples, resulting in the decrease of thermal stability of ILs remarkably.…”

Section: Resultssupporting

confidence: 82%

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Zhang

Yin

et al. 2014

Chin J Polym Sci

View full text Add to dashboard Cite

We report on the preparation of a well-defined star-shaped tricationic ionic liquid possessing three arms of poly(ethylene glycol) functionalized imidazolium rings. Remarkable solubility was found in most of the organic solvents we used. Thermogravimetric analysis (TGA) exhibited excellent thermal stability and two distinct decomposition temperatures were attributed to two kinds of chemical degradation. Differential scanning calorimetry (DSC) was further employed to investigate the thermal phase transitions, that three different signals (T g , T c , and T m ) were shown upon the second heating process. Moreover, CH 2 Cl 2 solution of the ionic liquid expressed an excitation-wavelength dependent fluorescence response, leading to the facile modulation of photoluminescence behavior. This work represents an example of utilizing molecular design to construct novel ionic liquids and endow further potential to be used in the engineering materials.

show abstract

Section: Resultssupporting

confidence: 82%

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Zhang

Yin

et al. 2014

Chin J Polym Sci

View full text Add to dashboard Cite

show abstract

“…RTILs have many attracting properties such as extremely low vapor pressure, a liquid state in a wide temperature range, non-flammability, excellent thermal stability, high electrical conductivity, interesting solvating properties, and high heat capacity [6][7]. Taking advantage of these characteristics, applications as lubricants [8][9][10][11][12][13][14][15][16], additives [16,17], solvents [18][19][20][21][22][23][24], heat storage mediums [25], and electrolytes [26][27][28][29] are expected.…”

Section: Introductionmentioning

confidence: 99%

Tribological Characteristics of Imidazolium-based Room Temperature Ionic Liquids Under High Vacuum

2007

View full text Add to dashboard Cite

Tribological characteristics of two imidazolium-based room temperature ionic liquids (RTILs), 1-hexyl-3-methylimidazolium tetrafluoroborate, and 1-hexyl-3-methylimidazolium hexafluorophosphate were investigated under high vacuum conditions. Viscosity-temperature characteristics and thermogravimetric characteristics of these compounds were also investigated. Imidazoliumbased RTILs have relatively good viscosity-temperature characteristics that are comparable to those of multiplyalkylated cyclopentane (MAC). Thermogravimetric results showed that ionic liquids have high thermal stability and low vapor pressure. Ionic liquids showed low friction and low wear rate under high vacuum conditions, and high load-carrying capacity was observed.

show abstract

“…From the experimental statistics, it has been cleared that the Gemini amphiphiles possess reasonably good thermal stability as compare to their single tailed amphiphiles. Thermal stability of the compound has been affected by the number of factors like functional group present in the hydrophobic tail [22], heterocyclic moiety [23], symmetry of the cation [3] and size of anions [24]. Our experimental results bare that the Gemini analogue was more thermally stable as compared to single tailed amphiphiles (Table 1), due to the symmetry factors.…”

Section: Thermal Gravimetric Analysis (Tga)mentioning

confidence: 57%

Comparison of Physicochemical Studies of Single Tailed and Gemini Cyclohexanoxy Carbonyl Pyridinium Cationic Amphiphiles

Aggarwal¹

2017

J Proteomics Bioinform

View full text Add to dashboard Cite

In the present research work, the physicochemical studies of surface active Cyclohexanoxy carbonyl Pyridinium single tailed and Gemini amphiphiles had been compared. Thermal stability, size of aggregates in aqueous system and interaction with a globular protein, Bovine Serum Albumin (BSA), was done by using TGA analysis, DLS, UV-visible, steady-state fluorescence and synchronous fluorescence and TEM respectively. On the basis of the experiments, it had been concluded that the Gemini amphiphile possessed less cytotoxicity, high thermally stability, form small sized compact aggregates and stable complex with BSA. The results have further been supported by higher value of Stern-Volmer quenching constant (K SV ) and a higher binding constants for Gemini amphiphiles as compared to single tailed amphiphiles. Moreover, on the basis of synchronous fluorescence spectra and UV spectra, it has been concluded that both the amphiphiles mainly interact with tryptophan residues. The less cytotoxicity values and stabilization of secondary structure of BSA in low concentration of ionic liquids implies that these ionic liquids can replaced the conventional surfactants in the detergent industries and used as a potential vehicles for the drug and gene delivery.the change in the wavelength of emission maximum (λ max ) and intensity parameters found to be sensitive to protein conformation and can be used to investigate the interactions between BSA and ionic liquids. DLS and TEM studies are used to see the change in conformation of the amphiphiles in the presence of BSA. Materials and Methods MaterialsGemini Amphiphiles (GA) and Single Tailed amphiphiles (ST) ( Figure 1) were synthesized in our lab by an earlier reported procedure [18,19]. Bovine Serum Albumin (BSA) (MW=66 kDa) was purchased from Central drug house (New Delhi, India) and was used as received. 0.01 M buffer, pH 7.2, was made from 0.01 M KH 2 PO 4 and 0.01 M sodium hydroxide. Potassium dihydrogen phosphate and sodium hydroxide were purchased from Merck, India. Millipore water was used in all experiments. Thermal gravimetric analysisThermal stability of both the amphiphiles had been investigated by Perkin Elmer Pyris 1 Thermal Gravimetric Analyzer (TGA). Both the samples were completely dried by rotatory vaccum pump. Both the samples were added in to the aluminum pans under the inert atmosphere at a heating rate of 10°C/min. Dynamic Light Scattering (DLS)The size of the studied cationic amphiphiles has been measured by the Zetasizer Nano ZS (Malvern Instrument Ltd.) UK. The inbuilt peltier device controls the temperature with an accuracy of ±0.1 K. The 1.0 mM aqueous solution of both amphiphiles has been filtered through 0.45 μM pore sized filter before measurement. CytotoxicityThe cytotoxicity of, 1.0 mM aqueous solution, both synthesized amphiphiles was carried out on C 6 glioma (cancerous brain cell line, passage number 65) by using MTT assay to calculate the IC 50 value of both the synthesized ionic liquids. Cells were seeded at a density of 10 × 10 3 cells/m...

show abstract

Ionic liquids containing an ester group as potential electrolytes

Cited by 84 publications

References 19 publications

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Synthesis of poly(ethylene glycol) functionalized star-shaped tricationic imidazolium based ionic liquid

Tribological Characteristics of Imidazolium-based Room Temperature Ionic Liquids Under High Vacuum

Comparison of Physicochemical Studies of Single Tailed and Gemini Cyclohexanoxy Carbonyl Pyridinium Cationic Amphiphiles

Contact Info

Product

Resources

About