Month: December 2022

Yen, Hao-Chi published the artcileModulation of the Hydrophilicity on Asymmetric Side Chains of Isoindigo-Based Polymers for Improving Carrier Mobility-Stretchability Properties, Related Products of ethers-buliding-blocks, the main research area is hydrophilicity isoindigo polymer carrier mobility stretchability.

To realize high-performance and intrinsically stretchable materials for field-effect transistor (FET) devices, a plethora of approaches about structure design were explored. Herein, we report a new approach to control the carrier mobility-stretchability properties of the polymers by tuning the hydrophilicity and asym. side-chain combination. A series of isoindigo-bithiophene (II2T)-based semiconducting polymers with three kinds of side chains including carbosilane side chain, semifluorinated side chain, and oligoether side chain were synthesized for investigating the structure-mobility and structure-stretchability relationships. The mol. stacking pattern and orientation of the derived polymers could be controlled by altering the hydrophilicity and asym. side-chain combination. The side chains of carbosilane and oligoether and a semifluorinated side chain could provide an order edge-on stacking, conformability and backbone aggregation, and an irregular solid-state aggregation, resp. Among them, P(Si-O) with oligoether and a carbosilane side chain exhibited an enhanced μh of 0.56 cm2 V-1 s-1, edge-on stacking, and aggregation behavior owing to the favorable intermol. interaction between the oligoether side chain and the asym. side chain to mitigate the steric hindrance. Also, P(Si-O) possessed a remarkable stretchability of (92%,⊥, 82%,‖) orthogonal μh retention under 100% strain and almost unchanged μh was observed after 1000 stretching-releasing cycles at 60% strain. The exptl. results suggested that the combination and hydrophilicity of side chain played a pivotal role in developing semiconducting polymers with a high performance and an intrinsic stretchability.

Macromolecules (Washington, DC, United States) published new progress about Crystallinity. 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

Li, Chao-Le published the artcileA Low-Volatile and Durable Deep Eutectic Electrolyte for High-Performance Lithium-Oxygen Battery, Related Products of ethers-buliding-blocks, the main research area is low volatile durable deep eutectic electrolyte high performance lithium.

The lithium-oxygen battery (LOB) with a high theor. energy d. (~3500 Wh kg-1) has been regarded as a strong competitor for next-generation energy storage systems. However, its performance is still far from satisfactory due to the lack of stable electrolyte that can simultaneously withstand the strong oxidizing environment during battery operation, evaporation by the semiopen feature, and high reactivity of lithium metal anode. Here, we have developed a deep eutectic electrolyte (DEE) that can fulfill all the requirements to enable the long-term operation of LOBs by just simply mixing solid N-methylacetamide (NMA) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) at a certain ratio. The unique interaction of the polar groups in the NMA with the cations and anions in the LiTFSI enables DEE formation, and this NMA-based DEE possesses high ionic conductivity, good thermal, chem., and electrochem. stability, and good compatibility with the lithium metal anode. As a result, the LOBs with the NMA-based DEE present a high discharge capacity (8647 mAh g-1), excellent rate performance, and superb cycling lifetime (280 cycles). The introduction of DEE into LOBs will inject new vitality into the design of electrolytes and promote the development of high-performance LOBs.

Journal of the American Chemical Society published new progress about Crystallinity. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Related Products of ethers-buliding-blocks.

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

Leick, Noemi published the artcileThermal stability and structural studies on the mixtures of Mg(BH4)2 and glymes, Computed Properties of 143-24-8, the main research area is magnesium borohydride glyme mixture thermal stability.

Coordination complexes of Mg(BH4)2 are of interest for energy storage, ranging from hydrogen storage in BH4 to electrochem. storage in Mg based batteries. Understanding the stability of these complexes is crucial since storage materials are expected to undergo multiple charging and discharging cycles. To do so, we examined the thermal stabilities of the 1 : 1 mixtures of Mg(BH4)2 with different glymes by DSC-TGA, TPD-MS and powder XRD anal. Despite their structural similarities, these mixtures show diverse phase transitions, speciations and decomposition pathways as a function of linker length.

Dalton Transactions published new progress about Crystallinity. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Computed Properties of 143-24-8.

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

Zhang, Runtong published the artcileTetraphosphite ligand for ultrafast isomerization-hydroformylation of C4 raffinate under mild conditions, Recommanded Product: 4-Hydroxy-3-tert-butylanisole, the main research area is raffinate tetraphosphite ligand isomerization hydroformylation ultrafast.

Ultrafast linear selective isomerization-hydroformylation (ISO-HF) tandem reaction under mild conditions remains a challenge. Herein, a novel tetraphosphite ligand (TBTP) and its application in ISO-HF of C4 Raffinate were reported. Based on a biphenol-2,2′,6,6′-tetraol with sterically demanding tert-Bu substituents, TBTP can be readily prepared by the reaction of biphenyl phosphorchloridite and tetraol in kilogram scale. The structural and coordinating features of this ligand and its rhodium complex were studied by XRD, NMR and DFT calculations This tetraphosphite ligand showed high turnover frequencies and regioselectivities in the rhodium-catalyzed ISO-HF of trans-, cis-2-butene. Such hydrolytically stable ligand was successfully applied in the ISO-HF of etherified C4 feed under a mild condition (65°C, 7 bar syngas, TOF up to 1574 h-1, ∼95% linear selectivity). An over-14-day durability test that was operated in two 5-L continuously stirred-tank reactors (CSTRs) in series delivered 79 kg n-valeraldehyde for the manufacture of C10 plasticizer DPHP.

Journal of Catalysis published new progress about Crystallinity. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Recommanded Product: 4-Hydroxy-3-tert-butylanisole.

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

Park, Myung-Soo published the artcileEffect of organic solvents on the electrochemical performance of sodium-ion hybrid capacitors, SDS of cas: 143-24-8, the main research area is sodium ion hybrid capacitor organic solvent electrochem property.

A comparative study on the ionic conductivity of carbonate- and ether-based electrolytes was performed, which showed that the ionic conductivity was strongly affected by the dielec. constant of the organic solvent. The relationship between the physicochem. properties of a liquid electrolyte and the cycling performance of sodium-ion hybrid capacitors (SICs) was assessed by comparing the electrochem. characteristics of SICs assembled with a neg. activated carbon electrode and a pos. Na3V2(PO4)3 electrode. Cyclic voltammetry, leakage current measurements, and electrochem. impedance spectroscopy results demonstrated that the good cycling performance of SICs with carbonate-based electrolytes can be ascribed to their superior electrochem. stability, large amounts of free ions, and favorable electrochem. reaction kinetics. An SIC employing an electrolyte consisting of 1.0 M NaClO4 in ethylene carbonate/propylene carbonate exhibited a good rate capability and delivered a high initial discharge capacity of 98.7 mAh g-1 with a capacity retention of 90.8% after 1000 cycles at a constant c.d. of 500 mA g-1.

ChemElectroChem published new progress about Boiling point. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, SDS of cas: 143-24-8.

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

Zhang, Leyuan published the artcileHybrid Electrolyte Engineering Enables Safe and Wide-Temperature Redox Flow Batteries, Related Products of ethers-buliding-blocks, the main research area is hybrid electrolyte engineering redox flow battery temperature; electrolyte chemistry; energy storage; hybrid electrolyte; redox flow batteries; wide temperature range.

Electrolyte is an important component in redox flow batteries (RFBs) that determines the current capability, potential window, and safety, but both aqueous and nonaqueous electrolytes have their intrinsic limits. Here, we develop the proof-of-concept hybrid electrolyte chem. to enable the design of safe and wide-temperature RFBs. In addition to the non-flammable characteristics, the hybrid electrolyte also inherits the high electrochem. stability and wide operational temperature range. It can show a potential window of 2.5 V and maintain high ion conductivities at low temperatures It also enables LiI to achieve high Coulombic efficiencies of >99.9 %, showing long cycling stability over 800 cycles. Moreover, it enables the successful operation of Zn/LiI RFBs at -20 °C for 150 cycles with nearly no capacity loss. This study highlights the great potential of hybrid electrolyte chem. for the approach of safe and high-performance large-scale energy storage systems in wide temperature ranges.

Angewandte Chemie, International Edition published new progress about Boiling point. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Related Products of ethers-buliding-blocks.

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

Thum, Andreas published the artcileSolvate ionic liquids based on lithium bis(trifluoromethanesulfonyl)imide-glyme systems: coordination in MD simulations with scaled charges, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is solvate ionic liquid lithium trifluoromethanesulfonylimide triglyme tetraglyme complexation MD.

Equimolar mixtures of lithium bis(trifluoromethanesulfonyl)imide (Li[NTf2]) with triglyme or tetraglyme (small oligoethers) are regarded as a new class of ionic liquids, the so-called solvate ionic liquids In these mixtures, the glyme mols. wrap around the lithium ions forming crown-ether like [Li(glyme)1]+ complex cations. New mol. dynamics (MD) simulations suggest that the lithium-glyme coordination is stronger than that predicted in a former MD study, whereas lithium-NTf2 connections are weaker. The differences between the present and the previous study arise from different starting conditions. Both studies employed charges scaled by a factor of 0.8. As shown by the comparison of MD simulations with and without reduced charges to experiments, charge scaling is necessary in order to obtain data close to exptl. results.

Physical Chemistry Chemical Physics published new progress about Atomic charge. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane.

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

Nagarajan, K. published the artcileQuest for anthelmintic agents. Part IV. Some analogs of bephenium and tetramisole, Formula: C8H9ClO, the main research area is anthelmintic bephenium tetramisole analog preparation.

Five biphenium analogs [N-(2-benzimidazolyl)methyl-N,N-dimethyl-N-(2-phenoxy)ethylammonium iodide, 2-(N-benzyl-8-quinoliniumoxy)ethyl-N,N-dimethyl-N-benzylammonium dibromide, I, II, and III and 2 tetramisole analogs [6-(2-benzothiazolyl)-2,3-dihydroimidazo[2,1-b]thiazole (IV) and 5-(2-benzothiazolyl[-2,3-dihydrothiazolo[2,1-a]imidazole] were prepared E.g., IV was prepared from 2-bromoacetylbenzothiazole, first by reaction with 2-aminothiazoline followed by heating the 3-(2-benzothiazolylcarbonylmethyl)thiazolidine-2-imine with dilute HBr. None of the 7 compounds were active against Necatur americanus infection in hamsters.

Indian Journal of Pharmaceutical Sciences published new progress about Anthelmintics. 622-86-6 belongs to class ethers-buliding-blocks, name is (2-Chloroethoxy)benzene, and the molecular formula is C8H9ClO, Formula: C8H9ClO.

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

Maceira, Alba published the artcileOccurrence of plastic additives in outdoor air particulate matters from two industrial parks of Tarragona, Spain: Human inhalation intake risk assessment, SDS of cas: 121-00-6, the main research area is plastic additive industrial park human inhalation intake; Air particulate matter samples; Gas chromatography-mass spectrometry; Human inhalation exposure; Outdoor air; Plastic additives.

Plastic additives include several kinds of chems. that are added to the polymer matrix to improve the final product quality and prevent deterioration effects. They are used in a large quantity of materials, so their presence in the environment is expected. This study has developed and validated a method based on gas chromatog.-mass spectrometry after pressurized liquid extraction to determine sixteen plastic additives including UV-stabilizers, aromatic and phenolic antioxidants and some of their degradation products in particulate matter (PM10) from outdoor air. Apparent recoveries were above 85% for most of compounds and low detection limits (pg m-3) were achieved. This is the first study to determine these types of contaminant in the PM10 of outdoor air from two locations surrounded by different industries. Various compounds were found in almost all samples; BHT, BHT-Q, 2,4-DTBP, BHT-CHO, UV320, UV328, Irgafos168 and Iragonx1076, with concentrations ranging from < MQL to 2860 pg m-3. Estimated daily intakes (EDIs) via ambient inhalation were calculated for each polymer additive and for different subpopulation groups classified by age. Two possible exposure scenarios (low, based on geometric mean, and high, 95th percentile) were simulated, and 0.51 ng kg-1bw day-1 was the EDI in the worst case scenario for children. Journal of Hazardous Materials published new progress about Air pollution. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, SDS of cas: 121-00-6.

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

Morgan, David L. published the artcileEnd-Quenching of TiCl4-Catalyzed Quasiliving Polyisobutylene with Alkoxybenzenes for Direct Chain End Functionalization, Product Details of C8H9ClO, the main research area is polyisobutylene alkoxybenzene end quenching.

Alkoxybenzenes were used to end-quench TiCl4-catalyzed quasiliving isobutylene polymerizations initiated from 2-chloro-2,2,4-trimethylpentane or 5-tert-butyl-1,3-di(1-chloro-1-methylethyl)benzene at -70 °C in 40/60 (volume/volume) hexane/methyl chloride. The alkoxybenzene/chain end molar ratios were in the range 2.5-4. Effective alkoxybenzene quenchers included those with simple alkyl groups, such as anisole and isopropoxybenzene, haloalkyl tethers, such as (3-bromopropoxy)benzene and (2-chloroethoxy)benzene, and even those with hydroxyl and amine functionality, such as 4-phenoxy-1-butanol and 6-phenoxyhexylamine. Alkylation was generally quant. and occurred exclusively in the para position; multiple alkylations on the same alkoxybenzene were not observed The alkylation reactions were tolerant of temperatures ranging from -70 to -30 °C and were unimpeded by the presence of endo- or exo-olefin termini. In situ cleavage of the ether linkage of anisole and isopropoxybenzene termini allowed single pot syntheses of phenol-terminated polyisobutylenes.

Macromolecules (Washington, DC, United States) published new progress about Polymerization. 622-86-6 belongs to class ethers-buliding-blocks, name is (2-Chloroethoxy)benzene, and the molecular formula is C8H9ClO, Product Details of C8H9ClO.

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