Unusually high thermal stability and peroxidase activity of cytochrome c in ionic liquid colloidal formulation

2016 ◽  
Vol 52 (3) ◽  
pp. 497-500 ◽  
Author(s):  
Pankaj Bharmoria ◽  
Arvind Kumar
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Cytochrome C ◽  
Peroxidase Activity ◽  
High Thermal Stability ◽  
Thermally Stable ◽  
Enzyme Biocatalysis

All ionic liquid-based colloidal formulation as a thermally stable medium for enzyme biocatalysis.

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.

Porphyrinated polyimide honeycomb films with high thermal stability for HCl gas sensing

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30472-30477 ◽  
Author(s):  
Fu-Wen Lin ◽  
Xiao-Ling Xu ◽  
Ling-Shu Wan ◽  
Jian Wu ◽  
Zhi-Kang Xu
Keyword(s):  
Thermal Stability ◽  
Gas Sensing ◽  
High Thermal Stability ◽  
Thermally Stable ◽  
Hcl Gas ◽  
Excellent Property

Thermally stable films with ordered pores are fabricated from porphyrinated polyimides and they exhibit excellent property in HCl gas sensing.

High Resistivity GaN Formed by Ion Implantation

2000 ◽  
Vol 639 ◽  
Author(s):  
Jun Kudo ◽  
Yuji Hishida ◽  
Masanori Watanabe ◽  
Tomoaki Hatayama ◽  
Takashi Fuyuki
Keyword(s):  
Thermal Stability ◽  
Ion Implantation ◽  
High Frequency ◽  
High Thermal Stability ◽  
High Resistivity ◽  
Thermally Stable ◽  
Active Elements ◽  
High Frequency Devices ◽  
Underlying Substrate

ABSTRACTAdvanced high frequency devices using GaN-based semiconductor require the technology to form high resistivity regions with high thermal stability to electrically isolate the active elements from surroundings, as well as from the underlying substrate. The present paper describes the preparation of thermally stable, high resistivity GaN layers by ion implantation. It was confirmed that C or Zn implantation yielded high resistivity layers. In particular, Zn implantation yielded the layers with resistivity on the order of 1010 cm, which could be sustained at temperatures as high as 1000.

New, thermally stable, rigid polyurethane foams based on polyols obtained using morpholine-2,3-dione derivatives

2018 ◽  
Vol 54 (4) ◽  
pp. 719-741 ◽  
Author(s):  
Iwona Zarzyka ◽  
Anita Bialkowska ◽  
Tomasz Paczesniak ◽  
Wieslaw Fracz ◽  
Dorota Majda
Keyword(s):  
Thermal Stability ◽  
Mechanical Strength ◽  
Operating Temperature ◽  
Polyurethane Foams ◽  
High Thermal Stability ◽  
Thermally Stable ◽  
Insulating Materials ◽  
Research Results ◽  
Rigid Polyurethane Foams

In this work, the research results of the synthesis and properties of the polyols with the oxamidoester group, obtained in the reaction of N-substituted morpholine-2,3-dione derivatives with excess of alkylene carbonates have been presented. Using these derivatives as polyol components, rigid foamed polyurethane materials of high thermal stability and mechanical strength have been obtained. New polyurethane foams obtained using hydroxypropyl morpholine-2,3-dione derivatives can be used as heat-insulating materials of operating temperature as high as 150°C.

DESIGN AND SYNTHESES OF HIGHLY EFFICIENT AND THERMALLY-STABLE IMIDAZOLE CHROMOPHORES BEARING DIAMINO GROUPS FOR NONLINEAR OPTICS

2005 ◽  
Vol 14 (01) ◽  
pp. 61-65 ◽  
Author(s):  
WEI WU ◽  
ZHAOLI ZHANG ◽  
XIAOYUN ZHANG
Keyword(s):  
Thermal Stability ◽  
Charge Transfer ◽  
Nonlinear Optics ◽  
Second Order ◽  
High Thermal Stability ◽  
Transfer System ◽  
Thermally Stable ◽  
Highly Efficient ◽  
Nlo Materials ◽  
Good Transparency

Four imidazole type chromophores bearing diamino groups were designed and synthesized with a facile method. All the chromophores possess efficient second-order nonlinearities based on MOPAC/AM1 calculation, high thermal stability and good transparency for the application in NLO materials. Chromophore 1d, an X-type dual charge transfer system, shows well-balanced nonlinearity/transparency properties.

scholarly journals Penentuan Resistivitas Tak-Terkompensasi Cairan Ion Berbasis Imidazol dengan Metode EIS: Pengaruh Panjang Alkil dan Perbedaan Anion

2020 ◽  
Vol 11 (2) ◽  
pp. 106-112
Author(s):  
Aep Patah ◽  
Yulia Rachmawati ◽  
Riyadini Utari ◽  
Achmad Rochliadi
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Electrochemical Impedance ◽  
High Viscosity ◽  
High Thermal Stability ◽  
Bode Plot ◽  
Ohmic Drop ◽  
Increasing Temperature ◽  
Solvent Properties

Ionic liquids have interesting properties because they have several advantages compared to conventional organic solvents, such as high thermal stability, high viscosity, good solvent properties, non-flammable, and non-volatile. In electrochemistry, ionic liquids can be used as solvents without the addition of electrolytes. However, ionic liquids still have resistivity properties (uncompensated resistance), thus ohmic drop measurements are needed for a potential correction. Imidazole-based ionic liquids, which are known for their high conductivity and commonly used as a solvent, have been measured of their resistivity as a function of temperature, and type of their cations/anions. Electrochemical Impedance Spectroscopy (EIS) method was chosen to measure the resistivity of ionic liquids and Bode plot was generated for the analysis of the results. The measured resistivities of ionic liquids are in the range of 420 to 1500 ohm. It is concluded that the resistivity of the imidazole-based ionic liquid is influenced by the size of their constituent ions, the viscosity, and the resistance is decreased with increasing temperature.

Ionic liquid-induced all-α to α + β conformational transition in cytochrome c with improved peroxidase activity in aqueous medium

2015 ◽  
Vol 17 (15) ◽  
pp. 10189-10199 ◽  
Author(s):  
Pankaj Bharmoria ◽  
Tushar J. Trivedi ◽  
Ashok Pabbathi ◽  
Anunay Samanta ◽  
Arvind Kumar
Keyword(s):  
Ionic Liquid ◽  
Secondary Structure ◽  
Cytochrome C ◽  
Aqueous Medium ◽  
Peroxidase Activity ◽  
Conformational Transition ◽  
Surface Active Ionic Liquid ◽  
Surface Active

Choline dioctylsulfosuccinate [Cho][AOT] (a surface active ionic liquid) has been found to induce all-α to α + β conformational transition in the secondary structure of enzyme cytochrome c (Cyt c) with an enhanced peroxidase activity in its aqueous vesicular phase at pH 7.0.

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