Month: December 2022

Yiu, Asteria published the artcileFacile Synthesis of Novel Thermo-Responsive Polyvalerolactones with Tunable LCSTs, COA of Formula: C9H20O5, the main research area is thermoresponsive polyvalerolactone biodegradable tunable lower critical solution temperature; oligoethylene glycol functionalized polyvalerolactone thermal tunable.

Thermoresponsive polymers have emerged as promising candidates for biomedical applications. Seven novel oligoethylene glycol (OEG) functionalized polyvalerolactones P1-P7 are synthesized from poly(α-allyl-δ-valerolactone) via thiol-ene addition post-polymerization modification. All seven polymers exhibit thermoresponsive behavior with lower critical solution temperatures (LCSTs) ranging from 13.8 to 92.2°C. Polymers P5-P7 are synthesized via thiol-ene addition reaction using two thiol mixtures at three different ratios. LCSTs of P5-P7 fall in between those of P1 and P2, and exhibit a linear relationship, indicating a tunable thermoresponsive system. This newly developed system offers great control for a desired thermoresponsive biocompatible, biodegradable polymeric system with desired LCSTs.

Macromolecular Chemistry and Physics published new progress about Aggregates. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, COA of Formula: C9H20O5.

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

Li, Na published the artcileBacteriochlorin aggregates as dopant-free hole-transporting materials for perovskite solar cells, Product Details of C9H20O5, the main research area is bacteriochlorin aggregate hole transport perovskite solar cell electrochem property.

Organic-inorganic hybrid perovskite solar cells (PSCs) have attracted great interests not only of academic field but also of industrial world toward practical applications in the last decade due to their extremely low production cost and excellent photo-phys. properties. Hole-transporting layer (HTL) as an integral component of PSC plays an important role in elevating its performance. In this work, five bacteriochlorophyll-a derivatives characterized by different C17-propionate residue were prepared and their J-type aggregates were investigated as HTLs of PSCs. It was confirmed that the nature of the introduced C17-propionate side chains have negligible effects on the electrochem. properties of main dye unit, such as the electronic absorption spectra and energy levels. However, the different lipophilicity, hydrophilicity, or hydrophobicity of chain characters affect the solubility of each dye component, resulting in diverse surface morphologies of their aggregate films as revealed by AFM observations. Furthermore, the five solid films prepared by spin-coating method showed discrepant charge extraction and transport abilities as HTLs, which were supported by both photo luminescence spectra and electrochem. impedance spectroscopy measurement results and were concluded to be the fundamental reason of the different PSC performance.

Organic Electronics published new progress about Aggregates. 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

Shi, Kaiyuan published the artcileElectrochemical Polishing: An Effective Strategy for Eliminating Li Dendrites, COA of Formula: C10H22O5, the main research area is lithium dendrite electrochem polishing deposition density functional theory.

Dendritic growth of lithium (Li) is well-known to originate from deposition on rough and inhomogeneous Li-metal surfaces, and has long been a central problem in charging lithium metal batteries. Herein, a universal strategy is proposed for dendrite suppression by both in situ and ex situ electrochem. polishing of Li metal from the corrosion science perspective. This polishing technique greatly smoothens the surface of the Li and dynamically regenerates a homogeneous solid electrolyte interphase film simultaneously during cell cycling, which suppresses the nucleation sites for dendritic Li and establishes an ideal matrix for even deposition of Li. As a result, the polished Li presents a stable voltage profile and high Li utilization in both the sym. cells and the full cells coupled with LiNi0.8Co0.1Mn0.1O2 (NCM811) or LiFePO4. The long cycle life of polished Li electrodes clearly demonstrates a uniform dendrite-free deposition of Li. This strategy shows a new direction to realize a uniform deposition of Li by providing a regenerative homogeneous Li-surface during repeated cycling.

Advanced Functional Materials published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, COA of Formula: C10H22O5.

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

Maho, Anthony published the artcileAqueous processing and spray deposition of polymer-wrapped tin-doped indium oxide nanocrystals as electrochromic thin films, Synthetic Route of 143-24-8, the main research area is spray deposition polymer surface ITO nanocrystal electrochromic thin film.

Plasmonic metal oxide nanocrystals are interesting electrochromic materials because they display high modulation of IR light, fast switching kinetics, and durability. Nanocrystals facilitate solution-based and high-throughput deposition, but typically require handling hazardous nonaqueous solvents and further processing of the as-deposited film with energy-intensive or chem. treatments. We report on a method to produce aqueous dispersions of tin-doped indium oxide (ITO) by refunctionalizing the nanocrystal surface, previously stripped of its native hydrophobic ligands, with a hydrophilic poly(acrylic acid) polymer featuring a low d. of methoxy-terminated poly(ethylene oxide) grafts (PAA-mPEO4). To determine conditions favoring the adsorption of PAA-mPEO4 on ITO, we varied the pH and chem. species present in the exchange solution The extent of polymer wrapping on the nanocrystal surface can be tuned as a function of the pH to prevent aggregation in solution and deposit uniform, smooth, and optical quality spray coated thin films. We demonstrate the utility of polymer-wrapped ITO nanocrystal thin films as an electrochromic material and achieve fast, stable, and reversible near-IR modulation without the need to remove the polymer after deposition provided that a wrapping d. of ~20% by mass is not exceeded.

Chemistry of Materials published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Synthetic Route of 143-24-8.

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

Wang, Hua published the artcileGreatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O2 batteries, Related Products of ethers-buliding-blocks, the main research area is superoxide solid catalyst stability oxygen battery reduction reaction activity.

Oxygen reduction reactions (ORRs) with one- or two-electron-transfer pathways are the essential process for aprotic metal-oxygen batteries, in which the stability of superoxide intermediates/products (O2-, LiO2, NaO2, etc.) mainly dominates the ORR activity/stability and battery performance. However, little success in regulating the stability of the superoxides has been achieved due to their highly reactive characteristics. Herein, we identified and modulated the stability of superoxides by introducing anthraquinone derivatives as cocatalysts which functioned as superoxide trapper adsorbing the superoxides generated via surface-mediated ORR and then transferring them from the solid catalyst surface into electrolyte. Among the studied trappers, 1,4-difluoroanthraquinone (DFAQ) with electron-withdrawing groups showed the highest adsorption towards superoxides and could efficiently stabilize LiO2 in electrolyte, which greatly promoted the surface-mediated ORR rate and stability. This highlighted the magnitude of adsorption between the trapper and LiO2 on the ORR activity/stability. Using an aprotic Li-O2 battery as a model metal-O2 battery, the overall performance of the cell with DFAQ was substantially improved in terms of cell capacity, rate capability and cyclic stability. These results represent a significant advance in the understanding of ORR mechanisms and promoting the performance of metal-O2 batteries.

Science China Materials published new progress about Adsorption. 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

Li, Dan published the artcile1,2-dimethyl-3-propylimidazolium iodide as a multiple-functional redox mediator for Li-O2 batteries: In situ generation of a “”self-defensed”” SEI layer on Li anode, Formula: C10H22O5, the main research area is dimethyl propylimidazolium iodide redox mediator lithium oxygen battery anode.

How to develop a homogeneous redox mediator (RM) towards both ORR and OER and how to prevent the shuttle effect are two main issues for Li-O2 batteries thus far. Here, we firstly report 1,2-dimethyl-3-propylimidazolium iodide (DMPII), which serves multiple functions as a RM for discharge capacity promotion, a RM for charge potential reduction, and a Li anode protector for shuttling suppression by in situ generating a “”self-defensed”” SEI layer. Benefiting from these advantages, a cell with DMPII displays a stable cyclability with a low terminal charge potential of ∼3.6 V till the cell death, a considerable rate performance, and a good reversibility associated with Li2O2 formation and degradation Based on the exptl. and d. functional theory (DFT) calculation results, a working mechanism for a cell operation is also proposed. These results represent a promising progress in the development of multiple-functional RM for Li-O2 batteries. Moreover, we expect that this work gives an insight into the in situ protection of Li metal anode for board applications (e.g., Li-S batteries, all-solid-state Li-ion batteries, etc.).

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Formula: C10H22O5.

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

Wei, Zhaohuan published the artcileA novel Cr2O3/MnO2-x electrode for lithium-oxygen batteries with low charge voltage and high energy efficiency, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is chromium trioxide manganese dioxide electrode lithium oxygen battery voltage; Cr2O3; Energy efficiency; MnO2-x; charge voltage; lithium-oxygen battery.

A high energy efficiency, low charging voltage cathode is of great significance for the development of non-aqueous lithium-oxygen batteries. Non-stoichiometric manganese dioxide (MnO2-x) and chromium trioxide (Cr2O3) are known to have good catalytic activities for the discharging and charging processes, resp. In this work, we prepared a cathode based on Cr2O3 decorated MnO2-x nanosheets via a simple anodic electrodeposition-electrostatic adsorption-calcination process. This combined fabrication process allowed the simultaneous introduction of abundant oxygen vacancies and trivalent manganese into the MnO2-x nanosheets, with a uniform load of a small amount of Cr2O3 on the surface of the MnO2-x nanosheets. Therefore, the Cr2O3 /MnO2-x electrode exhibited a high catalytic effect for both discharging and charging, while providing high energy efficiency and low charge voltage. Exptl. results show that the as-prepared Cr2O3 /MnO2-x cathode could provide a specific capacity of 6,779 mA· h· g-1 with a terminal charge voltage of 3.84 V, and energy efficiency of 78%, at a c.d. of 200 mA·g-1 . The Cr2O3 /MnO2-x electrode also showed good rate capability and cycle stability. All the results suggest that the as-prepared Cr2O3 /MnO2-x nanosheet electrode has great prospects in non-aqueous lithium-oxygen batteries.

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Safety of 2,5,8,11,14-Pentaoxapentadecane.

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

Fan, MouPing published the artcileIn situ growth of NiS2 nanosheet array on Ni foil as cathode to improve the performance of lithium/sodium-sulfur batteries, SDS of cas: 143-24-8, the main research area is nickel disulfide nanosheet foil growth lithium sodium sulfur battery.

The NiS2 nanosheet array on Ni foil (NiS2/NF) was prepared using an in situ growth strategy and sulfidation method and was used as the cathode of lithium sulfur battery. The unique nanostructure of the NiS2nanosheet array can provide abundant active sites for the adsorption and chem. action of polysulfides. Compared with the sulfur powder coated pure NF (pure NF-S) for lithium sulfur battery, the sulfur powder coated NiS2/NF (NiS2/NF-S) electrode exhibits superior electrochem. performance. Specifically, the NiS2/NF-S delivered a high reversible capacity of 1007.5 mAh g-1 at a c.d. of 0.1 C (1 C= 1675 mA g-1) and kept 74.5% of the initial capacity at 1.0 C after 200 cycles, indicating the great promise of NiS2/NF-S as the cathode of lithium sulfur battery. In addition, the NiS2/NF-S electrode also showed satisfactory electrochem. performance when used as the cathode for sodium sulfur battery.

Science China: Technological Sciences published new progress about Adsorption. 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

Pang, Long published the artcileDesign of crown ether based micelles and their anti-tumor properties by perturbing potassium ion homeostasis, Name: 2,5,8,11-Tetraoxatridecan-13-ol, the main research area is crown ether micelle potassium ion homeostasis antitumor.

Chemotherapy is one of the most used method for cancer therapy, however, brings huge pain to patients as the drugs commonly causes side effects. Inducing tumor cells apoptosis by perturbing ion homeostasis is a novel approach to replace chemotherapy in recent years. Crown ether has been widely used since it was discovered in the last century and has shown its potential in biol. applications. The aim of this paper is to design a series of novel nanometer micelles with crown ether on their surface. Crown ether was connected to a commonly used amphiphilic polymeric carrier, PEG-PCL, through ester bond (CPMs). Micelles about 120 nm in diameter were formed in aqueous solution The micelles could capture potassium ions prominently in both aqueous solution and tumor cells. In vitro and in vivo experiments showed that the CPMs had certain anti-tumor activity, indicating that the CPMs had anti-tumor potential.

Materials & Design published new progress about Adsorption. 23783-42-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11-Tetraoxatridecan-13-ol, and the molecular formula is C9H20O5, Name: 2,5,8,11-Tetraoxatridecan-13-ol.

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

Liu, Limin published the artcileRational Design of Nanostructured Metal/C Interface in 3D Self-Supporting Cellulose Carbon Aerogel Facilitating High-Performance Li-CO2 Batteries, Application of 2,5,8,11,14-Pentaoxapentadecane, the main research area is lithium carbon dioxide batterry cellulose aerogel nanostructure.

The sluggish kinetics of CO2 reduction and evolution reaction (CRR and CER) on the Li-CO2 battery cathode seriously hindered its practical application. Rational design of the Ru/C interface is expected to simultaneously decrease the free energy barrier of intermediate species and create a favorable electronic structure, effectively promoting the catalytic reaction kinetics of the CRR and CER. Herein, a 3D self-supporting cellulose carbon aerogel (CCA) with well-defined Ru/C interfaces (Ru@CCA) is synthesized as an advanced CO2-breathing cathode for Li-CO2 batteries. The results show that the energy efficiency significantly improves to 80% with a high discharge capacity of 10.71 mA h cm-2 at 20μA cm-2, and excellent cyclic stability of 421 cycles at 100μA cm-2. These outstanding performances are highly competitive compared with state-of-art Li-CO2 cathodes. In addition, the unique interface design strategy is applied to other non-noble metal@CCA cathodes, which confirms the advantages of constructing nanostructure metal/C interfaces for improving the kinetics of CRR and CER. This fundamental understanding of the structure-performance relationship provides new inspiration for designing highly efficient cathode catalysts for Li-CO2 batteries.

Advanced Energy Materials published new progress about Adsorption. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Application of 2,5,8,11,14-Pentaoxapentadecane.

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