Tag: M.W=50-100

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

Hu, Ssu-Wei published the artcileDirected self-propulsion of droplets on surfaces absent of gradients for cargo transport, Formula: C2H5NO, the main research area is self propulsion drop; Creation of deep grooves; Long-ranged transport; Manipulated self-propulsion of liquid droplets; Marangoni stress; Transport of liquid cargo; Ultra-low contact angle hysteresis.

Manipulating droplet transportation without inputting work is desired and important in microfluidic systems. Although the creation of wettability gradient on surfaces has been employed to achieve this goal, the transport distance is very limited, hindering its applications in long-term operations. Here, we show that programming long-ranged transport of droplets on surfaces can be achieved by the addition of trisiloxane surfactants and the creation of deep grooves. The former provides Marangoni stress to actuate the droplet motion and also reduces the inherent contact line pinning. The latter acts as a railing to guide the motion of surfactant-laden droplets to follow various layouts with geometric features of roads. It is found that the droplets with microliters can move over 20 cm. This work-free method is applicable to a variety of substrate materials and liquids By using self-running shuttles, a convenient platform for liquid cargos transport is developed and demonstrated. Moreover, the coalescence of cargos carried by different shuttles is accomplished in a three-branch layout, revealing new droplet microreactors.

Journal of Colloid and Interface Science published new progress about Coalescence. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Formula: C2H5NO.

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

Castelli, Andrea published the artcileRevealing Photoluminescence Modulation from Layered Halide Perovskite Microcrystals upon Cyclic Compression, Name: N-Methylformamide, the main research area is layered hybrid halide perovskite microcrystals cyclic compression photoluminescence piezooptical; mechanical cycles; perovskite 2D microcrystals; photoluminescence; pressure.

Halide perovskites show promise for high-efficiency solar energy conversion and light-emitting diode devices owing to their bandgap, which falls within the visible optical range. However, due to their rigidity, GPa pressures are necessary to control the complex interplay between their electronic and crystallog. structure. Layered perovskites are likely to be controlled using much lower pressures by exploiting the optical anisotropy of the embedded organic mols. in the structure. This work introduces layered perovskite microplatelets and demonstrates the extreme sensitivity of their emission to cyclic mech. loading in the range of tens of MPa. A drastic change in their emission is observed in situ, from near-white to an enhanced blue color. This process is reversible, as is evident from a hysteresis loop in the photoluminescence (PL) intensity of the microplatelets. A combination of exptl. anal. and computational modeling shows that such behavior cannot be attributed to changes in the crystallog. structure of the flakes. Instead, it suggests that, thanks to their structural anisotropy, microplate alignment and reorientation are responsible for the observed PL modulation. The possibility to tune the optical emission of layered perovskite crystals via low pressures makes them highly interesting as active materials in applications where stress sensing or light modulation is desired.

Advanced Materials (Weinheim, Germany) published new progress about Compression. 123-39-7 belongs to class amides-buliding-blocks, name is N-Methylformamide, and the molecular formula is C2H5NO, Name: N-Methylformamide.

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

Ray, Aniruddha published the artcileMixed Dimethylammonium/Methylammonium Lead Halide Perovskite Crystals for Improved Structural Stability and Enhanced Photodetection, Computed Properties of 123-39-7, the main research area is dimethylammonium methylammonium lead bromide perovskite crystal stability optical detection; dimethylammonium; perovskite crystals | perovskites; photodetectors; temperature-dependent properties.

The solvent acidolysis crystallization technique is used to grow mixed dimethylammonium/methylammonium lead tribromide (DMA/MAPbBr3) crystals reaching the highest dimethylammonium incorporation of 44% while maintaining the 3D cubic perovskite phase. These mixed perovskite crystals show suppression of the orthorhombic phase and a lower tetragonal-to-cubic phase-transition temperature compared to MAPbBr3. A distinct behavior is observed in the temperature-dependent luminescence properties of MAPbBr3 and mixed DMA/MAPbBr3 crystals due to the different organic cation dynamics governing the phase transition(s). Lateral photodetectors based on these crystals show that, at room temperature, the mixed crystals possess higher detectivity compared to MAPbBr3 crystals caused by structural compression and reduced surface trap d. The mixed-crystal devices exhibit large enhancement in their detectivity below the phase-transition temperature (at 200 K), while for the MAPbBr3 devices only insignificant changes are observed The high detectivity of the mixed crystals makes them attractive for visible-light communication and for space applications. The results highlight the importance of the synthetic technique for compositional engineering of halide perovskites that governs their structural and optoelectronic properties.

Advanced Materials (Weinheim, Germany) published new progress about Compression. 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

Rahimpour, Elaheh published the artcileUtilizing Abraham and Hansen solvation parameters for solubility prediction of meloxicam in cosolvency systems, Quality Control of 123-39-7, the main research area is meloxicam cosolvency system solubility Abraham Hansen solvation parameter.

In the present study, the Jouyban-Acree model as an accurate math. model is investigated for prediction of meloxicam solubility in some previously reported cosolvency systems. In order to achieve predictive cosolvency models, the Jouyban- Acree model are combined with physicochem. parameters of the Abraham solvation parameters and the Hansen solubility parameters. The overall mean relative deviations (MRDs%) values for the meloxicam in the investigate cosolvency systems are computed and discussed.

Journal of Molecular Liquids published new progress about Dissolution. 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