scholarly journals Electrochromic devices using Fe(II)‐based metallo‐supramolecular polymer: Introduction of ionic liquid as electrolyte to enhance the thermal stability

2019 ◽  
Vol 27 (11) ◽  
pp. 661-666 ◽  
Author(s):  
Sanjoy Mondal ◽  
Takefumi Yoshida ◽  
Masayoshi Higuchi
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Supramolecular Polymer ◽  
Electrochromic Devices

scholarly journals Synthesis and Biological Evaluation of a Novel Glycidyl Metharcylate/Phaytic Acid-Based on Bagasse Xylan Composite Derivative

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2084
Author(s):  
Mingkun Li ◽  
Heping Li ◽  
Hongli Liu ◽  
Zhiming Zou ◽  
Chaoyu Xie
Keyword(s):  
Lung Cancer ◽  
Thermal Stability ◽  
Ionic Liquid ◽  
Molecular Docking ◽  
Phytic Acid ◽  
Biological Activities ◽  
Biological Evaluation ◽  
Potential Candidate ◽  
Reaction Conditions ◽  
Cell Proliferation Inhibition

The development of natural biomass materials with excellent properties is an attractive way to improve the application range of natural polysaccharides. Bagasse Xylan (BX) is a natural polysaccharide with various biological activities, such as antitumor, antioxidant, etc. Its physic-chemical and biological properties can be improved by functionalization. For this purpose, a novel glycidyl metharcylate/phytic acid based on a BX composite derivative was synthesized by a free radical polymerization technique with glycidyl metharcylate (GMA; GMABX) and further esterification with phytic acid (PA; GMABX-PA) in ionic liquid. The effects of the reaction conditions (i.e., temperature, time, initiator concentration, catalyst concentration, GMA concentration, PA concentration, mass of ionic liquid) on grafting rate(G), conversion rate(C) and degree of substitution(DS) are discussed. The structure of the composite material structure was confirmed by FTIR, 1H NMR and XRD. SEM confirmed the particle morphology of the composite derivative. The thermal stability of GMABX-PA was determined by TG-DTG. Molecular docking was further performed to study the combination mode of the GMABX-PA into the active site of two lung cancer proteins (5XNV, 2EB2) and a blood cancer protein (2M6N). In addition, tumor cell proliferation inhibition assays for BX, GMABX-PA were carried out using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetraz -olium bromide (MTT) method. The results showed that various reaction conditions exhibited favorable gradient curves, and that a maximum G of 56% for the graft copolymerization and a maximum DS of 0.267 can be achieved. The thermal stability was significantly improved, as demonstrated by the fact that there was still 60% residual at 800 °C. The molecular docking software generated satisfactory results with regard to the evaluated binding energy and combining sites. The inhibition ratio of GMABX-PA on NCI-H460 (lung cancer cells) reached 29.68% ± 4.45%, which is five times higher than that of BX. Therefore, the material was shown to be a potential candidate for biomedical applications as well as for use as a heat resistant material.

scholarly journals Leaching Chalcopyrite with an Imidazolium-Based Ionic Liquid and Bromide

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 183 ◽  
Author(s):  
Marcelo Rodríguez ◽  
Luís Ayala ◽  
Pedro Robles ◽  
Rossana Sepúlveda ◽  
David Torres ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Acid Leaching ◽  
High Thermal Stability ◽  
Complexing Agent ◽  
Hydrogen Sulfate ◽  
Operational Conditions ◽  
Bromide Ions ◽  
Novel Applications ◽  
Ionic Liquid Concentration

The unique properties of ionic liquids (ILs) drive the growing number of novel applications in different industries. The main features of ILs are high thermal stability, recyclability, low flash point, and low vapor pressure. This study investigated pure chalcopyrite dissolution in the presence of the ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate, [BMIm]HSO4, and a bromide-like complexing agent. The proposed system was compared with acid leaching in sulfate media with the addition of chloride and bromide ions. The results demonstrated that the use of ionic liquid and bromide ions improved the chalcopyrite leaching performance. The best operational conditions were at a temperature of 90 °C, with an ionic liquid concentration of 20% and 100 g/L of bromide.

scholarly journals Thermochromism of Highly Luminescent Photopolymer Flexible Films Based On Eu (III) Salts Confined in Polysulfone

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5394
Author(s):  
Mani Outis ◽  
João Paulo Leal ◽  
Maria Helena Casimiro ◽  
Bernardo Monteiro ◽  
Cláudia Cristina Lage Pereira
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Melting Point ◽  
Quantum Yield ◽  
Thermal Behavior ◽  
Temperature Dependence ◽  
Strong Temperature Dependence ◽  
Host Matrix ◽  
Flexible Films ◽  
First Time

Here we discuss the influence of two different cations on the emissive properties of the highly emissive [Eu(fod)4]− anion. The studied Eu(III) salts were [C16Pyr][Eu(fod)4] (1), and the previously reported [Chol][Eu(fod)4]. C16Pyr stands for N-cetylpyridinium, Chol for cholinium and fod for 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate. 1 is classified as ionic liquid, with melting point close to 60 °C, and presented a luminescence quantum yield of (ϕ) 100%. Ultrabright emissive photopolymers were obtained for the first time using polysulfone as the host matrix. The films were prepared with incorporation of 10% (w/w) of 1 and [Chol][Eu(fod)4] in the polymeric matrix, which improved its thermal stability. Additionally, the luminescence of CholEu(fod)4/PSU presented a strong temperature dependence with a ratiometric thermal behavior.

scholarly journals Investigation of the Electrochemical and Thermal Stability of an Ionic Liquid Based Na0.6Co0.1Mn0.9O2/Na2.55V6O16 Sodium-Ion Full-Cell

2019 ◽  
Vol 166 (6) ◽  
pp. A944-A952 ◽  
Author(s):  
Minh Phuong Do ◽  
Pauline J. Fischer ◽  
Arun Nagasubramanian ◽  
Jan Geder ◽  
Fritz E. Kühn ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Sodium Ion ◽  
Full Cell ◽  
Thermal Stability Of

scholarly journals Ionic Liquid Electrolytes for Safer and More Reliable Sodium Battery Systems

2020 ◽  
Vol 10 (18) ◽  
pp. 6323 ◽  
Author(s):  
Mariangela Bellusci ◽  
Elisabetta Simonetti ◽  
Massimo De Francesco ◽  
Giovanni Battista Appetecchi
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Low Temperature ◽  
Room Temperature ◽  
Side Chain ◽  
Electrolyte Mixtures ◽  
Sodium Battery ◽  
Sodium Batteries ◽  
Battery Systems

Na+-conducting, binary electrolytic mixtures, based on 1-ethyl-3-methyl-imidazolium, trimethyl-butyl-ammonium, and N-alkyl-N-methyl-piperidinium ionic liquid (IL) families, were designed and investigated. The anions were selected among the per(fluoroalkylsulfonyl)imide families. Sodium bis(trifluoromethylsulfonyl)imide, NaTFSI, was selected as the salt. The NaTFSI-IL electrolytes, addressed to safer sodium battery systems, were studied and compared in terms of ionic conductivity and thermal stability as a function of the temperature, the nature of the anion and the cation aliphatic side chain length. Room temperature conductivities of interest for sodium batteries, i.e., largely overcoming 10−4 or 10−3 S cm−1, are displayed. Similar conduction values are exhibited by the EMI-based samples even below −10 °C, making these electrolyte mixtures potentially appealing also for low temperature applications. The NaTFSI-IL electrolytes, with the exception of the FSI-ones, are found to be thermally stable up to 275 °C, depending on the nature of the cation and/or anion, thus extending their applicability above 100 °C and remarkably increasing the reliability and safety of the final device, especially in the case of prolonged overheating.

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