Category: 23783-42-8

Atik, Jaschar published the artcileIonic liquid plasticizers comprising solvating cations for lithium metal polymer batteries, HPLC of Formula: 23783-42-8, the main research area is ionic liquid plasticizer lithium metal polymer battery.

Ternary solid polymer electrolytes (TSPEs) with ionic liquids (ILs) including alkyl-based ammonium cations and low coordinating anions suffer from the lack of Li+ ion coordination by the ILs compared to the immobile polymer backbone, in terms of Li+ ion transport. Thus, solvating ionic liquids (SILs) with an oligo(ethylene oxide) side chain attached onto the cation were prepared to improve the interaction between Li+ and the IL and accelerate Li+ transport in TSPEs. A variety of methods, such as pulsed field gradient NMR spectroscopy, Li metal plating/stripping and measurements of Sand’s times were used to show that Li+ ion transference numbers increase with the oligo(ethylene oxide) side chain length in SIL-based TSPEs, which results in faster Li+ ion transport and translates into much slower lithium depletion at a given current, thereby delaying the onset of fast dendrite growth of lithium metal.

Electrochimica Acta published new progress about Carbon black Role: MOA (Modifier or Additive Use), USES (Uses). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, HPLC of Formula: 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Blond, Pascale published the artcileReady-to-Use Germanium Surfaces for the Development of FTIR-Based Biosensors for Proteins, Product Details of C9H20O5, the main research area is germanium surface FTIR biosensor protein.

Germanium is particularly suitable for the design of FTIR-based biosensors for proteins. The grafting of stable and thin organic layers on germanium surfaces remains, however, challenging. To tackle this problem, the authors developed a calix[4]arene-tetradiazonium salt decorated with four oligo(ethylene glycol) chains and a terminal reactive carboxyl group. This versatile mol. platform was covalently grafted on germanium surfaces to yield robust ready-to-use surfaces for biosensing applications. The grafted calixarene monolayer prevents nonspecific adsorption of proteins while allowing bioconjugation with biomols. such as bovine serum albumin (BSA) or biotin. The native form of the studied proteins was maintained upon immobilization. As a proof of concept, the resulting calix[4]arene-based germanium biosensors were used through a combination of ATR-FTIR spectroscopy and fluorescence microscopy for the selective detection of streptavidin from a complex medium. This study opens real possibilities for the development of sensitive and selective FTIR-based biosensors devoted to the detection of proteins.

Langmuir published new progress about Attenuated-total-reflectance Fourier-transform IR spectroscopy. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Product Details of C9H20O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Wang, Miaomiao published the artcileSuspect Screening and Chemical Profile Analysis of Storm-Water Runoff Following 2017 Wildfires in Northern California, SDS of cas: 23783-42-8, the main research area is storm water wildfire suspect screening California; Emerging contaminants of concern; Nontargeted analysis; Organic contaminants; Storm-water runoff; Wildfire-impacted.

The combustion of structures and household materials as well as firefighting during wildfires lead to releases of potentially hazardous chems. directly into the landscape. Subsequent storm-water runoff events can transport wildfire-related contaminants to downstream receiving waters, where they may pose water quality concerns. To evaluate the environmental hazards of northern California fires on the types of contaminants in storm water discharging to San Francisco Bay and the coastal marine environment, we analyzed storm water collected after the northern California wildfires (Oct. 2017) using a nontargeted anal. (NTA) approach. Liquid chromatog. quadrupole time-of-flight mass spectrometric anal. was completed on storm-water samples (n = 20) collected from Napa County (impacted by the Atlas and Nuns fires), the city of Santa Rosa, and Sonoma County (Nuns and Tubbs fires) during storm events that occurred in Nov. 2017 and Jan. 2018. The NTA approach enabled us to establish profiles of contaminants based on peak intensities and chem. categories found in the storm-water samples and to prioritize significant chems. within these profiles possibly attributed to the wildfire. The results demonstrated the presence of a wide range of contaminants in the storm water, including surfactants, per- and polyfluoroalkyl substances, and chems. from consumer and personal care products. Homologs of polyethylene glycol were found to be the major contributor to the contaminants, followed by other widely used surfactants. Nonylphenol ethoxylates, typically used as surfactants, were detected and were much higher in samples collected after Storm Event 1 relative to Storm Event 2. The present study provides a comprehensive approach for examining wildfire-impacted storm-water contamination of related contaminants, of which we found many with potential ecol. risk.

Environmental Toxicology and Chemistry published new progress about Alcohols, ethoxylated Role: ANT (Analyte), ANST (Analytical Study). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, SDS of cas: 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Xiao, Yushan published the artcileSynthesis of SCF3-Substituted Sulfonium Ylides from Sulfonium Salts or α-Bromoacetic Esters, Safety of 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is acyltetrahydrothiophenium bromide trifluoromethylthiophthalimide trifluoromethylthiolation; bromoacetate tetrahydrothiophene trifluoromethylthiophthalimide trifluoromethylthiolation; tetrahydrothiophenylidene trifluoromethylthioethanone preparation.

A metal-free direct trifluoromethylthiolation of sulfonium ylides with an electrophilic trifluoromethylthiolating reagent was established, in which sulfonium salt or α-bromoacetic ester was employed as sulfonium ylide precursors. This trifluoromethylthiolation enabled the straightforward construction of SCF3-substituted sulfonium ylides from a wide range of substrates, including ketones, esters, and even PEGylated substrates. Moreover, the application of this approach in large-scale preparation and the fluorescence and fluorine-19 magnetic resonance imaging capabilities of the product were also explored.

Advanced Synthesis & Catalysis published new progress about Acetates Role: RCT (Reactant), RACT (Reactant or Reagent) (bromo-). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Safety of 2,5,8,11-Tetraoxatridecan-13-ol.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Sapotta, Meike published the artcileA Water-Soluble Perylene Bisimide Cyclophane as a Molecular Probe for the Recognition of Aromatic Alkaloids, Quality Control of 23783-42-8, the main research area is perylene bisimide cyclophane mol probe aromatic alkaloid; alkaloids; cyclophanes; fluorescence probes; host-guest systems; perylene bisimides.

Herein, we report a water-soluble macrocyclic host based on perylene bisimide (PBI) chromophores that recognizes natural aromatic alkaloids in aqueous media by intercalating them into its hydrophobic cavity. The host-guest binding properties of our newly designed receptor with several alkaloids were studied by UV/Vis and fluorescence titration experiments as the optical properties of the chromophoric host change significantly upon complexation of guests. Structural information on the host-guest complexes was obtained by 1D and 2D NMR spectroscopy and mol. modeling. Our studies reveal a structure-binding property relationship for a series of structurally diverse aromatic alkaloids with the new receptor and higher binding affinity for the class of harmala alkaloids. To our knowledge, this is the first example of a chromophoric macrocyclic host employed as a mol. probe for the recognition of aromatic alkaloids.

Angewandte Chemie, International Edition published new progress about Alkaloids Role: ANT (Analyte), ANST (Analytical Study) (aromatic). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Quality Control of 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Tan, Jihuai published the artcileDirect transformation of fatty acid-derived monomers from dimer acid manufacturing into valuable bio-plasticizers with high plasticization and compatibilization, Category: ethers-buliding-blocks, the main research area is dimer acid nitrile butadiene rubber plasticization compatibilization property.

Direct transformation of monomer fatty acids derived from the dimer acid manufacturing into high value-added green plasticizers represents a sustainable approach for reutilizing industrial wastes. However, this process is challenging due to the few double bonds and long-chain alkyl in monomer fatty acid-based derivatives, resulting in poor compatibility with polymer matrix and inferior plasticization. Herein, we develop a sustainable and low-cost strategy via direct esterification between monomer fatty acids and polyethylene glycol Me ether to produce plasticizers featured by high plasticization and compatibilization. The performances of monomer acid-based ethoxylated esters as resulting plasticizers for nitrile butadiene rubber were highly structure-dependent. Extensive experiments demonstrated that oxethyl unit played critical roles in both improving the compatibility between monomer acid-based ethoxylated esters and nitrile butadiene rubber and in promoting the dispersion of carbon black in nitrile butadiene rubber matrix. Specially, the processing, freezing resistance, oil resistance, thermal and mech. stabilities of nitrile butadiene rubber plasticized by monomer acid-based ethoxylated esters with three or four oxethyl units were comparable or better than those of nitrile butadiene rubber blended with dioctyl phthalate. This study opens a simple, general and industrialized strategy to produce valuable and sustainable plasticizers as alternatives of toxic dioctyl phthalate.

Journal of Cleaner Production published new progress about Carbon black Role: MOA (Modifier or Additive Use), USES (Uses) (N 550, N 770). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Category: ethers-buliding-blocks.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Xiao, Qiang published the artcileStructural guidelines for stabilization of α-helical coiled coils via PEG stapling, Product Details of C9H20O5, the main research area is guideline helical coiled PEG stapling.

Macrocyclization or stapling is one of the most well-known and generally applicable strategies for enhancing peptide/protein conformational stability and target binding affinity. However, there are limited structure- or sequence-based guidelines for the incorporation of optimal interhelical staples within coiled coils: the location and length of an interhelical staple is either arbitrarily chosen or requires significant optimization. Here we explore the impact of interhelical PEG stapling on the conformational stability and proteolytic resistance of a model disulfide-bound heterodimeric coiled coil. We demonstrate that (1) interhelical PEG staples are more stabilizing when placed farther from an existing disulfide crosslink; (2) e/g ′ staples are more stabilizing than f/b ′ or b/c ′ staples; (3) PEG staples between different positions have different optimal staple lengths; (4) PEG stapling tolerates variation in the structure of the PEG linker and in the mode of conjugation; and (5) the guidelines developed here enable the rational design of a stabilized PEG-stapled HER-2 affibody with enhanced conformational stability and proteolytic resistance.

RSC Chemical Biology published new progress about Disulfides Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Product Details of C9H20O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Gao, Siliang published the artcileExtractive distillation of benzene, toluene, and xylenes from pyrolysis gasoline using methylsulfonylethane as a cosolvent, Formula: C9H20O5, the main research area is benzene toluene xylene methylsulfonylethane gasoline extractive distillation pyrolysis cosolvent.

Highly efficient separation of benzene, toluene, and xylenes (BTXs) from pyrolysis gasoline is very important in petrochem. industries. Though the extractive distillation (ED) process is simpler and consumes less energy compared with liquid-liquid extraction process, it is difficult for a single solvent, for example, sulfolane, to achieve both high purity and high yield of BTXs. In this work, methylsulfonylethane (MSE) was chosen as a cosolvent to improve the selectivity of sulfolane after solvent screening, and factors that may affect the selectivity of the composite solvent were fully investigated, such as the content of cosolvent, solvent to feed ratio, the composition of the feed, and temperature Furthermore, 240 h of continuous extractive distillation and solvent recovery experiment was carried out using sulfolane (85 wt%)-MES (15 wt%) mixture as solvent. The purity of mixed aromatics obtained was 99.83%, and the yield was as high as 99.7%.

Asia-Pacific Journal of Chemical Engineering published new progress about Alkenes Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Formula: C9H20O5.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Li, Longjia published the artcileAmphiphilic ligands for Cu-catalyzed aerobic oxidation to synthesize 9-fluorenones in water, Related Products of ethers-buliding-blocks, the main research area is fluorenone preparation; fluorene aerobic oxidation copper catalyst.

A series of amphiphilic PEG-functionalized nitrogen ligands were developed for the highly efficient copper-catalyzed aerobic oxidation of 9-fluorenes, with mol. oxygen as the sole oxidant in neat water to afford 9-fluorenones I [R = H, 2-NH2, 2-I, etc.]. A broad range of functional groups were well tolerated and thus offered the opportunity for further functionalization.

Catalysis Communications published new progress about Oxidation. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Related Products of ethers-buliding-blocks.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Mao, Wuyu published the artcileOrganocatalytic and Scalable Syntheses of Unsymmetrical 1,2,4,5-Tetrazines by Thiol-Containing Promotors, Synthetic Route of 23783-42-8, the main research area is tetrazine derivative preparation; nitrile heterocyclization olefination; annulations; heterocycles; nitriles; organocatalysis; synthetic methods.

Despite the growing application of tetrazine bioorthogonal chem., it is still challenging to access tetrazines conveniently from easily available materials. Described here is the de novo formation of tetrazine from nitriles and hydrazine hydrate using a broad array of thiol-containing catalysts, including peptides. Using this facile methodol., the syntheses of 14 unsym. tetrazines, containing a range of reactive functional groups, on the gram scale were achieved with satisfactory yields. Using tetrazine methylphosphonate as a building block, a highly efficient Horner-Wadsworth-Emmons reaction was developed for further derivatization under mild reaction conditions. Tetrazine probes with diverse functions can be scalably produced in yields of 87-93 %. This methodol. may facilitate the widespread application of tetrazine bioorthogonal chem.

Angewandte Chemie, International Edition published new progress about Heterocyclization. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Synthetic Route of 23783-42-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem