Category: 123-39-7

Galle, Tom published the artcileSimultaneous Ligand and Cation Exchange of Colloidal CdSe Nanoplatelets toward PbSe Nanoplatelets for Application in Photodetectors, Application In Synthesis of 123-39-7, the main research area is simultaneous ligand cation exchange colloidal cadmium selenium nanoplatelets toward.

Cation exchange emerged as a versatile tool to obtain a variety of nanocrystals not yet available via a direct synthesis. Reduced reaction times and moderate temperatures make the method compatible with anisotropic nanoplatelets (NPLs). However, the subtle thermodn. and kinetic factors governing the exchange require careful control over the reaction parameters to prevent unwanted restructuring. Here, we capitalize on the research success of CdSe NPLs by transforming them into PbSe NPLs suitable for optoelectronic applications. In a two-phase mixture of hexane/N-methylformamide, the oleate-capped CdSe NPLs simultaneously undergo a ligand exchange to NH4I and a cation exchange reaction to PbSe. Their morphol. and crystal structure are well-preserved as evidenced by electron microscopy and powder X-ray diffraction. We demonstrate the successful ligand exchange and associated electronic coupling of individual NPLs by fabricating a simple photodetector via spray-coating on a com. substrate. Its optoelectronic characterization reveals a fast light response at low operational voltages.

Journal of Physical Chemistry Letters published new progress about Anisotropy. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Application In Synthesis of 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Barhoumi Meddeb, Amira published the artcileMagnetic field effects on cellulose nanocrystal ordering in a non-aqueous solvent, Application In Synthesis of 123-39-7, the main research area is cellulose nanocrystal non aqueous solvent magnetic field manipulation.

Cellulose nanocrystals (CNCs) are rod-shaped particles that can self-assemble into a chiral nematic phase at certain contents. Due to their neg. diamagnetic susceptibility and high aspect ratio, the structure of the chiral nematic phase of CNC suspensions can be manipulated using a magnetic field, which is a promising path to extending local order to a larger scale. The ability to manipulate CNCs in non-aqueous solvents is critically needed to incorporate them in a wide range of polymers. So far, magnetic field-induced manipulation of CNCs in suspension was reported for aqueous suspensions only, whereas a much-needed similar study for non-aqueous solvents has not been reported to the best of our knowledge. In this paper, we investigate the CNC ordering in n-methylformamide (NMF) under a 0.7 T magnetic field and compare it to the order achieved in H2O. The formation of a well-defined chiral nematic phase and its viscosity have a significant influence on the rate and extent of the field-induced orientation of CNCs. A clearly formed chiral nematic phase has a high potential for increased levels of field-induced ordering. And the chiral nematic phase with the lowest viscosity showed the largest increase in ordering when the magnetic field is applied before reaching equilibrium and plateauing. In contrast, the higher viscosity suspensions exhibited limited temporal changes after the initial field effect. These findings will facilitate the fabrication of globally ordered CNCs in a variety of polymers under a magnetic field, which is a necessary step to expanding the engineering applications of large-scale cellulose-based composites with anisotropic properties.

Cellulose (Dordrecht, Netherlands) published new progress about Anisotropy. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Application In Synthesis of 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Hu, Yang-mei-qing published the artcileThe preparation of polyclonal antibody against chlordimeform and establishment of detection by indirect competitive ELISA, Product Details of C2H5NO, the main research area is polyclonal antibody chlordimeform indirect competitive ELISA; Chlordimeform; IC-ELISA; artificial antigen; polyclonal antibody.

Chlordimeform is a chem. pesticide that is highly carcinogenic and toxic. The purpose of this study was to establish an ELISA (ELISA) method for the detection of chlordimeform in aquaculture and fish farming. Chlordimeform was coupled with bovine serum albumin (BSA) and ovalbumin (OVA) as carrier proteins. A chlordimeform-BSA conjugate was used as an immunogen, and chlordimeform-OVA was used as a coating antigen. Chlordimeform-BSA was used to immunize rabbits, and a polyclonal antibody was prepared An indirect competitive ELISA (IC-ELISA) was established to detect chlordimeform. The working range of the established IC-ELISA method for chlordimeform detection was 1-20 ng/mL. The IC50 was 3.126 ng/mL, and the lower limit of detection (LOD) of chlordimeform was 0.637 ng/mL. The recovery of chlordimeform from spiked water samples ranged from 81% to 107%. An anti-chlordimeform polyclonal antibody was successfully developed, and a novel IC-ELISA was established to detect chlordimeform in aquaculture.

Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes published new progress about Antiserums. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Product Details of C2H5NO.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Li, Rui published the artcileSeparation of azeotropic mixture (2, 2, 3, 3-Tetrafluoro-1-propanol + water) by extractive distillation: Entrainers selection and vapour-liquid equilibrium measurements, Computed Properties of 123-39-7, the main research area is tetrafluoropranol water azeotropic mixture extractive distillation vapor liquid equilibrium.

For separating the azeotrope of 2, 2, 3, 3-tetrafluoro-1-propanol (TFP) and water by extractive distillation, N-Me pyrrolidone (NMP), N-Me formamide (NMF) and N, N-dimethyl formamide (DMF) were selected as entrainers using the COSMO-SAC model based on solvent capacity. And the charge d. surface of entrainers and each component in the azeotrope system were calculated The vapor-liquid equilibrium (VLE) data for the mixtures (TFP + NMP), (TFP + NMF) and (TFP + DMF) were measured by a modified Rose-type recirculating still at the pressure 101.3 kPa. The thermodn. consistency for the VLE data was validated using the Herington and van Ness methods. The VLE data were correlated with NRTL, Wilson and UNIQUAC models, and the interaction parameters of thermodn. models were fitted. Meanwhile, the effect of the entrainers on the VLE for TFP and water was explored. Compared with NMF and DMF, NMP was adopted as the suitable entrainer for separation of the azeotropic mixture TFP and water by extractive distillation

Journal of Chemical Thermodynamics published new progress about Azeotropes. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Computed Properties of 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Kumar, Vishal published the artcileAn Environmentally Benign, Catalyst-Free N-C Bond Cleavage/Formation of Primary, Secondary, and Tertiary Unactivated Amides, Quality Control of 123-39-7, the main research area is formamide amine hydrochloride N formylation transamidation green chem; arylformamide preparation; acetamide amine hydrochloride N acylation transamidation green chem; arylacetamide preparation; benzamide amine hydrochloride N benzoylation transamidation green chem; arylbenzamide preparation.

An operationally simple, cheap and catalyst-free method for the transamidation of a diverse range of unactivated amides furnishing the desired products in excellent yields. This protocol was environmentally friendly and operates under extremely mild conditions without using any promoter or additives. Significantly, this strategy was implied in the chemoselective synthesis of a pharmaceutical mol., paracetamol, on a gram-scale with excellent yield. Anticipated that this was universally applicable strategy will be of great interest in drug discovery, biochem., and organic synthesis.

European Journal of Organic Chemistry published new progress about Acetylation. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Quality Control of 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Hou, Lixia published the artcileComparative assessment of the effect of pretreatment with microwave and roast heating on the quality of black sesame pastes, Quality Control of 123-39-7, the main research area is microwave roast heating black sesame paste quality pretreatment effect; black sesame; microwave heating; physicochemical properties; roasting; volatile compounds.

Heating is a key procedure in producing sesame paste. The effects of microwave heating and conventional roasting on the physicochem. features, protein profiles, and volatile compounds of black sesame pastes made of black sesame seeds from Burma and China were evaluated in this study. All heating treatments decreased the moisture contents of black sesame pastes, and roasting yielded lower moisture levels, although with similar chroma (p < 0.05). The samples subjected to microwave heating had remarkably lower peroxide values than those heated with roasting (p < 0.05). Chinese microwave-heated samples had a higher nitrogen solubility index than roasting (p < 0.05). Both microwave and roasting increased the contents of the volatiles notably. SDS-PAGE showed that the intensity of the 2-15 kDa band decreased markedly after heating and nearly diminished for roasting samples, suggesting that roasting was more remarkable for the promotion to the protein aggregation. The results indicated that the quality traits of black sesame paste not only depend on the heating methods, but also the heating power/temperature and duration, and the source of the materials. Journal of Food Science published new progress about Acid number. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Quality Control of 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Dasetty, Siva published the artcileActive learning of polarizable nanoparticle phase diagrams for the guided design of triggerable self-assembling superlattices, Quality Control of 123-39-7, the main research area is nanoparticle phase diagram self assembly superlattice learning.

Polarizable nanoparticles are of interest in materials science because of their rich and complex phase behavior that can be used to engineer nanostructured materials with long-range crystalline order. To understand and rationally navigate the design space of polarizable nanoparticles for self-assembling highly ordered superlattices, we developed a coarse-grained computational model to describe the nanoparticle-nanoparticle interactions in implicit solvent and employ the computationally efficient image method to model many-body polarization interactions. We conducted high-throughput virtual screening over a five-dimensional particle design space spanned by temperature, particle size, particle charge, particle dielec., and solvent dielec. using enhanced sampling mol. dynamics calculations within an active learning framework to efficiently map out the regions of thermodn. stability of the self-assembled aggregates. We validate our predictions in comparisons against small angle X-ray scattering measurements of gold nanoparticles surface functionalized with metal chalcogenide complex ligands. Finally, we use our validated phase maps to computationally design switchable nanostructured materials capable of triggered assembly and disassembly as a function of temperature and solvent dielec. with potential applications as sensors, smart windows, optoelectronic devices, and in medical diagnostics.

Molecular Systems Design & Engineering published new progress about Aggregation. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Quality Control of 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Redondo, Pilar published the artcileAmino acetaldehyde conformers: structure and spectroscopic properties, Safety of N-Methylformamide, the main research area is amino acetaldehyde conformer spectroscopic property.

We present a computational study of the different conformers of amino acetaldehyde. This mol. is a precursor of glycine and also an isomer of the detected mols. acetaldehyde and methylformamide. In addition, a previous theor. result shows that amino acetaldehyde could be formed from the gas phase reaction of formamide with CH+5. Different computational approaches, going from d. functional theory (DFT) to coupled cluster (CC) calculations, are employed for the characterization of the amino acetaldehyde conformers. We locate four low-lying conformation on the singlet potential energy surface (PES), two with a synperiplanar arrangement of the carboxylic oxygen atom and the NH2 group, and the other two conformers with an anticlinal disposition. All levels of theory predict the conformer with a synperiplanar arrangement and the H atoms of the NH2 group pointing in the direction of the oxygen, denoted as in-sp-amino acetaldehyde, as the most stable. The viability of the interconversion processes between the four conformers in space is analyzed. Relevant spectroscopic parameters to rotational spectroscopy with ′spectroscopic′ accuracy at the composite level are reported. Vibrational frequencies and IR intensities are also computed at the CC with single and double excitations (CCSD) level including anharmonic corrections. This information could help in the exptl. characterization of amino acetaldehyde that could be considered as a good candidate mol. to be searched for in space.

Monthly Notices of the Royal Astronomical Society published new progress about Amino group. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Safety of N-Methylformamide.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Apolinario, Arlete published the artcileTailoring the anodic hafnium oxide morphology using different organic solvent electrolytes, Product Details of C2H5NO, the main research area is hafnium oxide electrochem anodization organic solvent electrolyte morphol; HfO2; anodic hafnium oxide; anodic oxide; anodization; dielectric; nanoporous; nanotubes; organic solvent; viscosity.

Highly ordered anodic hafnium oxide (AHO) nanoporous or nanotubes were synthesized by electrochem. anodization of Hf foils. The growth of self-ordered AHO was investigated by optimizing a key electrochem. anodization parameter, the solvent-based electrolyte using: Ethylene glycol, DMSO, formamide and N-methylformamide organic solvents. The electrolyte solvent is here shown to highly affect the morphol. properties of the AHO, namely the self-ordering, growth rate and length. As a result, AHO nanoporous and nanotubes arrays were obtained, as well as other different shapes and morphologies, such as nanoneedles, nanoflakes and nanowires-agglomerations. The intrinsic chem.-phys. properties of the electrolyte solvents (solvent type, dielec. constant and viscosity) are at the base of the properties that mainly affect the AHO morphol. shape, growth rate, final thickness and porosity, for the same anodization voltage and time. We found that the interplay between the dielec. and viscosity constants of the solvent electrolyte is able to tailor the anodic oxide growth from continuous-to-nanoporous-to-nanotubes.

Nanomaterials published new progress about Anodization. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Product Details of C2H5NO.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Biswas, Sohag published the artcileProbing the vibrational dynamics of amide bands of N-methylformamide, N, N-dimethylacetamide, and N-methylacetamide in water, SDS of cas: 123-39-7, the main research area is methylformamide dimethylacetamide methylacetamide amide band vibratonal dynamics.

We report the vibrational dynamics of amide modes of N-methylformamide (NMF), N-methylacetamide (NMA), and N, N-dimethylacetamide (DMA) in water using first principles mol. dynamics simulations. The solvent-mediated dynamics and stretching profile of C=O, N-H, and C-N modes of amide mols. were analyzed in terms of vibrational spectral and second-order reorientational dynamical properties. The maximum red shift is observed for the amide I band of DMA due to stronger DMA-water hydrogen bonding interaction; a blue shift is observed for NMF. The calculations also reveal that the amide-A band of NMF exhibits a red shift as compared to NMA. Multiple peaks are located for the C-N band of DMA, and this feature gradually decreases for NMA and NMF. Spectral dynamics of amide bands were investigated by calculating the frequency-frequency correlation functions. Slowest spectral diffusion is found for the C=O band of DMA. However, NMA shows slower dynamics for N-H band than that of NMF.

Computational & Theoretical Chemistry published new progress about Bond length. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, SDS of cas: 123-39-7.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics