ionic liquid crystals
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BioChem ◽  
2022 ◽  
Vol 2 (1) ◽  
pp. 8-26
Author(s):  
Manuel Aureliano

Polyoxometalates (POMs) are clusters of units of oxoanions of transition metals, such as Mo, W, V and Nb, that can be formed upon acidification of neutral solutions. Once formed, some POMs have shown to persist in solution, even in the neutral and basic pH range. These inorganic clusters, amenable of a variety of structures, have been studied in environmental, chemical, and industrial fields, having applications in catalysis and macromolecular crystallography, as well as applications in biomedicine, such as cancer, bacterial and viral infections, among others. Herein, we connect recent POMs environmental applications in the decomposition of emergent pollutants with POMs’ biomedical activities and effects against cancer, bacteria, and viruses. With recent insights in POMs being pure, organic/inorganic hybrid materials, POM-based ionic liquid crystals and POM-ILs, and their applications in emergent pollutants degradation, including microplastics, are referred. It is perceived that the majority of the POMs studies against cancer, bacteria, and viruses were performed in the last ten years. POMs’ biological effects include apoptosis, cell cycle arrest, interference with the ions transport system, inhibition of mRNA synthesis, cell morphology changes, formation of reaction oxygen species, inhibition of virus binding to the host cell, and interaction with virus protein cages, among others. We additionally refer to POMs’ interactions with various proteins, including P-type ATPases, aquoporins, cinases, phosphatases, among others. Finally, POMs’ stability and speciation at physiological conditions are addressed.


Giant ◽  
2021 ◽  
pp. 100088
Author(s):  
Shanju Zhang ◽  
Evan Beach ◽  
Paul T. Anastas ◽  
Lisa D. Pfefferle ◽  
Chinedum O. Osuji

ACS Omega ◽  
2021 ◽  
Author(s):  
Katsuma Ishino ◽  
Hajime Shingai ◽  
Yasuyuki Hikita ◽  
Isao Yoshikawa ◽  
Hirohiko Houjou ◽  
...  

Author(s):  
Ahmed Galal ◽  
Yousef M Ahmed ◽  
Mansour H Ahmed ◽  
Nada F Atta

Abstract Favipiravir (Fav) is an antiviral drug administered for the treatment of pulmonary infection and is also among the approved drugs for the treatment of lung inflammation in humans infected with COVID-19. Here we introduce the electrochemical behavior of Fav at ionic liquid crystals (ILCs)-carbon nanotubes (CNTs) modified electrode. The proposed electrode is ready for use in a one-step preparation protocol, is employed with low-cost instrumentation, and is distinctly sensitive and selective for the determination of the drug both in human serum and in commercially available medications. Ionic liquid crystals allow ionic interaction with the drug to realize its surface preconcentration. The limits of detection and quantification for the determination of Fav in blood-serum within the concentration range 0.9 to 150 μmol.L–1 are 0.0161 and 0.119 μmol.L–1, respectively. The sensor proved effective in the concurrent determination of several drugs used as prescribed “add-on” medication for the virus or for the treatment of other chronic diseases of some patients.


ChemPlusChem ◽  
2021 ◽  
Author(s):  
Andreas Taubert ◽  
Nadia Kapernaum ◽  
Alyna Lange ◽  
Max Ebert ◽  
Marco André Grunwald ◽  
...  

2021 ◽  
Vol 11 (21) ◽  
pp. 10347
Author(s):  
Melina S. Weber ◽  
Margit Schulze ◽  
Giuseppe Lazzara ◽  
Antonio Palumbo Piccionello ◽  
Andrea Pace ◽  
...  

The synthesis and characterization of a new class of 1,2,4-oxadiazolylpyridinium as a cationic scaffold for fluorinated ionic liquid crystals is herein described. A series of 12 fluorinated heterocyclic salts based on a 1,2,4-oxadiazole moiety, connected through its C(5) or C(3) to an N-alkylpyridinium unit and a perfluoroheptyl chain, differing in the length of the alkyl chain and counterions, has been synthesized. As counterions iodide, bromide and bis(trifluoromethane)sulfonimide have been considered. The synthesis, structure, and liquid crystalline properties of these compounds are discussed on the basis of the tuned structural variables. The thermotropic properties of this series of salts have been investigated by differential scanning calorimetry and polarized optical microscopy. The results showed the existence of an enantiotropic mesomorphic smectic liquid crystalline phase for six bis(trifluoromethane)sulfonimide salts.


ChemPlusChem ◽  
2021 ◽  
Author(s):  
Yoshiaki Uchida ◽  
Tatsunori Sakaguchi ◽  
Shigeaki Oki ◽  
Satoshi Shimono ◽  
Jayeong Park ◽  
...  

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