Tag: M.W=100-150

Rucka, Lenka published the artcileGenetic and functional diversity of nitrilases in Agaricomycotina, Application of Picolinonitrile, the main research area is Agaricomycotina nitrilase genetic diversity phylogeny; Agaricomycotina; Basidiomycota; cyanide hydratase; homology modeling; nitrilase; nitrile; overproduction; phylogenetic distribution; substrate docking; substrate specificity.

Nitrilases participate in the nitrile metabolism in microbes and plants. They are widely used to produce carboxylic acids from nitriles. Nitrilases were described in bacteria, Ascomycota and plants. However, they remain unexplored in Basidiomycota. Yet more than 200 putative nitrilases are found in this division via GenBank. The majority of them occur in the subdivision Agaricomycotina. In this work, we analyzed their sequences and classified them into phylogenetic clades. Members of clade 1 (61 proteins) and 2 (25 proteins) are similar to plant nitrilases and nitrilases from Ascomycota, resp., with sequence identities of around 50%. The searches also identified five putative cyanide hydratases (CynHs). Representatives of clade 1 and 2 (NitTv1 from Trametes versicolor and NitAg from Armillaria gallica, resp.) and a putative CynH (NitSh from Stereum hirsutum) were overproduced in Escherichia coli. The substrates of NitTv1 were fumaronitrile, 3-phenylpropionitrile, β-cyano-l-alanine and 4-cyanopyridine, and those of NitSh were hydrogen cyanide (HCN), 2-cyanopyridine, fumaronitrile and benzonitrile. NitAg only exhibited activities for HCN and fumaronitrile. The substrate specificities of these nitrilases were largely in accordance with substrate docking in their homol. models. The phylogenetic distribution of each type of nitrilase was determined for the first time.

International Journal of Molecular Sciences published new progress about Agaricomycotina. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Application of Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Roy, Palas published the artcileUltrafast Excimer Formation and Solvent Controlled Symmetry Breaking Charge Separation in the Excitonically Coupled Subphthalocyanine Dimer, Product Details of C8H4N2, the main research area is ultrafast excimer formation solvent control symmetry breaking charge separation; excimer; excited states; subphthalocyanine; symmetry breaking charge separation; ultrafast dynamics.

Knowledge of the factors controlling excited state dynamics in excitonically coupled dimers and higher aggregates is critical for understanding natural and artificial solar energy conversion. In this work, we report ultrafast solvent polarity dependent excited state dynamics of the structurally well-defined subphthalocyanine dimer, μ-OSubPc2. Stationary electronic spectra demonstrate strong exciton coupling in μ-OSubPc2. Femtosecond transient absorption measurements reveal ultrafast excimer formation from the initially excited exciton, mediated by intramol. structural evolution. In polar solvents the excimer state decays directly through symmetry breaking charge transfer to form a charge separated state. Charge separation occurs under control of solvent orientational relaxation.

Angewandte Chemie, International Edition published new progress about Broken symmetry. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Product Details of C8H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Graves, Brian M. published the artcileComprehensive characterization of mainstream marijuana and tobacco smoke, Recommanded Product: Picolinonitrile, the main research area is marijuana tobacco smoke particle aerodynamics.

Recent increases in marijuana use and legalization without adequate knowledge of the risks necessitate the characterization of the billions of nanoparticles contained in each puff of smoke. Tobacco smoke offers a benchmark given that it has been extensively studied. Tobacco and marijuana smoke particles are quant. similar in volatility, shape, d. and number concentration, albeit with differences in size, total mass and chem. composition Particles from marijuana smoke are on average 29% larger in mobility diameter than particles from tobacco smoke and contain 3.4 times more total mass. New measurements of semivolatile fractions determined that >97% of the mass and volume of the particles from either smoke source are comprised of semivolatile compounds For tobacco smoke and marijuana smoke, resp., 4350 and 2575 different compounds are detected, of which 670 and 536 (231 in common) are tentatively identified, and of these, 173 and 110 different compounds (69 in common) are known to cause neg. health effects through carcinogenic, mutagenic, teratogenic, or other toxic mechanisms. This study demonstrates striking similarities between marijuana and tobacco smoke in terms of their phys. and chem. properties.

Scientific Reports published new progress about Carcinogenicity. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Recommanded Product: Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Cuate-Gomez, D. H. published the artcilePolycrystalline Erbium Phthalocyanine Thin Films Deposited on Silicon and Porous Silicon by Ultrasonic Spray Pyrolysis: Optical, Morphological, and Electrical Characterizations, Quality Control of 91-15-6, the main research area is erbium phthalocyanine polycrystalline thin film silicon ultrasonic spray pyrolysis.

Conventional inorganic semiconductors are the basis of modern electronics but their properties limit performance for certain applications. Two relevant applications for which these materials are not suitable are: (1) non-planar or flexible devices and (2) large-area prototypes. This limitation has driven the research of a new generation of thin film organic semiconductor materials that can be incorporated in hybrid heterostructures. These materials can be deposited on different substrates at low temperatures and at low cost, from a solution by using a simple method such as spin-coating. Here, we report the development of a low-cost ultrasonic spray pyrolysis (USP) instrument to obtain, by a simple and efficient technique, erbium phthalocyanine (ErPc) polycrystalline thin films incorporated into the Al/c-Si/ErPc/Ni and Al/c-Si/PS/ErPc/Ni heterostructures and their concomitant characterization. For the formation of the porous silicon (PS) layer and the deposition of the ErPc material, metal-assisted chem. etching (MACE) and USP were resp. used. The morphol., optical, and elec. properties were studied thoroughly. FE-SEM micrographs show a noteworthy result; non-agglomerated nanosphere particles were obtained on the c-Si substrates in contrast with the PS layer, where agglomerations are pretty apparent to the sight. Different equations were tested to find the transport mechanism in the heterostructures and the best fit was for the space charge limited current (SCLC) type. Finally, current-time (I-T) measurements were carried out to gain insight into the photocurrent effects. These results show a photo-response with a reverse polarization, and this can be applied for the design of organic hybrid heterostructures in photo-sensor applications.

Journal of Electronic Materials published new progress about Current density. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Quality Control of 91-15-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Mukherjee, Jit published the artcileUnderstanding the Site-Selective Electrocatalytic Co-Reduction Mechanism for Green Urea Synthesis Using Copper Phthalocyanine Nanotubes, HPLC of Formula: 91-15-6, the main research area is copper phthalocyanine nanotube electroccatalytic coredn green urea preparation.

Green synthesis of urea under ambient conditions by electrochem. co-reduction of N2 and CO2 gases using effective electrocatalyst essentially pushes the conventional two steps (N2 + H2 = NH3 and NH3 + CO2 = CO(NH2)2) industrial process at high temperature and high pressure, to the brink. The single step electrochem. green urea synthesis process has hit a roadblock due to the lack of efficient and economically viable electrocatalyst with multiple active sites for dual reduction of N2 and CO2 gas mols. to urea. Herein, copper phthalocyanine nanotubes (CuPc NTs) having multiple active sites (such as metal center, Pyrrolic-N3, Pyrrolic-N2, and Pyridinic-N1) as an efficient electrocatalyst which exhibits urea yield of 143.47μg h-1 mg-1cat and faradaic efficiency of 12.99% at -0.6 V vs. reversible hydrogen electrode by co-reduction of N2 and CO2 are reported. Theor. calculation suggests that Pyridinic-N1 and Cu centers are responsible to form CN bonds for urea by co-reduction of N2 to NN* and CO2 to *CO, resp. This study provides the new mechanistic insight about the successful electro-reduction of dual gases (N2 and CO2) in a single mol. as well as rational design of efficient noble metal-free electrocatalyst for the synthesis of green urea.

Advanced Functional Materials published new progress about Current density. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, HPLC of Formula: 91-15-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Wu, Yuling published the artcileSynthesis and properties of hyperbranched polymers for polymer light emitting devices with sunlight-style white emission, Quality Control of 100-70-9, the main research area is fluorene carbazole iridium phosphor hyperbranched polymer light emitting device; Suzuki coupling polycondensation white light emission electroluminescent device.

A new series of hyperbranched polymers consisting of fluorene-alt-carbazole as the branches and the 3D-structured spiro[3.3]heptane-2,6-dispirofluorene (SDF) as the core were designed and synthesized by one-pot Suzuki coupling polycondensation. A phosphor group with broad full width at half maximum (FWHM) bis(1-phenyl-isoquinoline)(acetylacetonato)iridium(III)(Ir(Brpiq)2acac, 0.08 mol%) as the red-light emitting unit and bis(2-(4-bromophenyl)-1-[6-(9-carbazolyl)hexyl]-imidazole)(2-(5-(4-fluorinated phenyl)-1,3,4-triazole)pyridine)iridium(III)((CzhBrPI)2Ir(fpptz)) as the green-light emitting unit were introduced into the backbones to obtain sunlight-style white-light emission by adjusting the feeding ratios of (CzhBrPI)2Ir(fpptz) (0.08 to 0.32 mol%). The results indicate the LUMO levels of polymers were reduced and the electron injection was improved because of excellent electron-transporting ability of the triazole unit in the green group. The hyperbranched structures can effectively suppress the polymers’ chain distortion and aggregation, and promote the incomplete Forster resonance energy transfer efficiency from fluorene-alt-carbazole segments to Ir complex units. As a result, the devices with hyperbranched polymer light-emitting layers realize white light emission, and the optimized device also exhibits good electroluminescent (EL) performance with CIE coordinates at (0.32, 0.31), a maximum luminance of 9054 cd m-2, a maximum current efficiency of 3.59 cd A-1 and a maximum CRI of 91.

RSC Advances published new progress about Current density. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Quality Control of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Chinnusamy, Tamilselvi published the artcileRecyclable MeOPEG-clicked TEMPO catalyst for one-pot aerobic double dehydrogenation of alcohols to nitriles, HPLC of Formula: 100-70-9, the main research area is immobilized MeOPEG clicked TEMPO catalyst preparation; nitrile green preparation; alc aerobic double dehydrogenation immobilized MeOPEG clicked TEMPO catalyst.

In this study, TEMPO was efficiently grafted on MeOPEG support by copper-catalyzed (3+2) cycloaddition reaction. The newly immobilized MeOPEG-clicked TEMPO catalyst was characterized by NMR, IR, and MALDI-TOF. Subsequently, it was used for one-pot aerobic double dehydrogenation of alcs. to nitriles using aqueous ammonia as the nitrogen source and O2 (1 atm) as the terminal oxidant. The catalytic efficiency was also reported with various benzyl, alkyl and heteroaromatic alcs. The reactivity of this catalyst was comparable with that of unmodified TEMPO. Furthermore, the new MeOPEG-clicked TEMPO catalyst could be easily recovered by precipitation and recycled up to five runs.

Catalysis Communications published new progress about Dehydrogenation. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, HPLC of Formula: 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Banstola, Bijay published the artcileSublimation Electrification of Organic Compounds, Application In Synthesis of 91-15-6, the main research area is sublimation electrification organic compound elec current.

The electrification of crystalline deposits of organic compounds under high vacuum was measured and quantified. A group of compounds that produce multiply charged ions by matrix-assisted ionization were deposited on a metal plate, and the current was amplified and recorded; the total charge was obtained by integration of the current. Signals of several hundred picoamperes were obtained within 10 s of the application of high vacuum and persisted for several minutes as the compounds sublimed. The magnitude and sign of the charge were matrix dependent and were affected by the presence of organic or mineral acid in the crystalline deposit, as well as by the application of an elec. field. The observations are interpreted as surface electrification caused by the emission of small charged matrix particles during sublimation, with ionic charge carriers comprising protons and hydroxide ions.

Journal of the American Society for Mass Spectrometry published new progress about Electric charge. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Application In Synthesis of 91-15-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Kamal, Arsala published the artcileVisible Light-Induced Cu-Catalyzed Synthesis of Schiff’s Base of 2- Amino Benzonitrile Derivatives and Acetophenones, Quality Control of 1885-29-6, the main research area is aminobenzonitrile acetophenone copper azomethine chromophore.

An efficient, mild, and environment-friendly methodol. for the synthesis of azomethine chromophores through the reaction of 2-aminobenzonitrile derivatives and acetophenones has been developed using CuCl (10 mol %) catalyst and toluene as a solvent under visible light irradiation The reaction proceeds readily at room temperature under 20 W white LED with good to excellent yields in short reaction time. This methodol. shows significant advantages such as environmentally benign reaction conditions, sustainability, enumerating tolerance of wide range of functional groups, cost-effectiveness, high atom economy, short reaction time, and applicability for large-scale synthesis.

ChemistrySelect published new progress about Green chemistry. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Quality Control of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Liu, Shihui published the artcilePhotocatalytic C-H silylation of heteroarenes by using trialkylhydrosilanes, HPLC of Formula: 91-15-6, the main research area is photocatalytic silylation heteroarene hydrosilane green chem.

The efficient and selective C-H silylation of heteroarenes, especially the pharmaceutically relevant electron-deficient heteroarenes, represents a great challenge in organic synthesis. Herein we wish to report a distinctive visible light-promoted photocatalytic C-H silylation approach that enables the direct coupling of trialkylhydrosilanes with both electron-deficient and -rich heteroarenes as well as with cyano-substituted arenes in moderate to high yields and with good regioselectivity. The protocol features operational simplicity, mild reaction conditions, and the use of safe and readily available Na2S2O8, bis(trimethylsilyl) peroxide (BTMSPO) or iPr3SiSH as the radical initiators. Notably, the challenging bulky and inert trialkylhydrosilanes, such as (t-butyldimethyl)silane (tBuMe2SiH) and (triisopropyl)silane (iPr3SiH), work smoothly with the protocol. Moreover, despite the higher stability of tBuMe2Si silylation products, our studies revealed their great reactivity and versatility in diverse C-Si-based chem. transformations, providing an operationally simple, low-cost, and environmentally benign synthetic technol. for mol. construction and elaboration.

Chemical Science published new progress about Green chemistry. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, HPLC of Formula: 91-15-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts