Tag: M.W=100-150

Li, Shasha published the artcileA nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties, Name: 2-Aminobenzonitrile(Flakes or Chunks), the main research area is biochar nanoscale electron exchange capacity surface redox active moiety.

Biochar, possessing electron exchange capacities (EEC), is generally involved in environmental redox reactions due to the presence of redox-active moieties (RAMs). The phenomenon that chars containing comparable RAMs possess differential EEC revealed that the accessibility of RAMs is important to the redox properties. However, many studies have focused on the type of RAMs, whereas the distribution has been insufficiently investigated. Herein, we achieved nanoscale observation of electroactive moieties on the surface of six chars using a conductive at. force microscope. For the two specific kinds of chars with submicron particles and opposite current distributions, the submicron particles took up only 1-4%wt of biochar accounting for approx. 30-50% of electron-donating capacity (EDC), and electron-accepting capacity (EAC) became 87% and 1.40 times as before after removing submicron particles, resp. Meanwhile, the combined impact of RAMs and surface topog. (that uneven distribution of RAMs resulted in outstanding EEC by enhancing accessibility) was clarified. Furthermore, direct evidence of the link between char structure and EEC (that condensed aromatic structures were indispensable to EAC while both heteroatoms and amorphous aromatics contributed to EDC) was established. These findings can aid in understanding the functions of biochar in biotic and abiotic redox processes.

BioChar published new progress about Adsorption. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Name: 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Murmu, Shyamal published the artcileUnveiling the genesis of the high catalytic activity in nickel phthalocyanine for electrochemical ammonia synthesis, Application In Synthesis of 91-15-6, the main research area is catalysis nickel phthalocyanine electrochem ammonia synthesis nitrogen reduction.

Electrochem. NH3 synthesis by the N reduction reaction (NRR) using an economically efficient electrocatalyst can provide a substitute for the Haber-Bosch process. However, identification of active sites responsible for the origin of catalytic activity in transition metal phthalocyanine is a difficult task due to its complex structure. Herein, d. functional theory (DFT) is applied to identify the probable active sites of Ni phthalocyanine (NiPc) for the NRR as well as the origin of catalytic activity which is associated with the d band center and d. of states (DOS) of Ni in NiPc. Accordingly, NiPc nanorods (NRs), synthesized by a solvothermal method in large scale, exhibit an NH3 yield rate ∼85μg h-1 mgcat-1 and a faradaic efficiency (FE) of 25% at -0.3 V vs. RHE. Also, the catalyst shows long term stability up to 30 h while maintaining the NH3 yield and FE. The isotopic labeling experiment and other control study led to validation of the N source in NH3 formation. This study provides brand new insightful understanding of the active sites and the origin of the catalytic activity of NiPc for their NRR applications.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Adsorption. 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

Alvarez-Bermudez, Olaia published the artcileMagnetically enhanced polymersupported ceria nanocatalysts for the hydration of nitriles, Quality Control of 100-70-9, the main research area is magnetite nitrile polystyrene ceria nanocatalyst hydration heterogeneous catalysis.

The heterogeneous catalysis of the hydration of nitriles to amides is a process of great industrial relevance in which cerium(IV) oxide (also referred to as ceria) has shown an outstanding catalytic performance. The use of non-supported ceria nanoparticles is related to difficulties in the purification of the product and the recovery and recyclability of the catalyst. Therefore, in this work, ceria nanoparticles are supported on a polymer matrix either by synthesizing polymer particles by so-called Pickering miniemulsions while using ceria nanoparticles as emulsion stabilizers or, as a comparison, by in-situ crystallization on preformed polymer particles. The former strategy presents significant advantages over the latter in terms of time and consumption of resources, and it facilitates an easier scale-up of the process. In both strategies, the incorporation of a magnetoresponsive core within the polymer matrix allows the recovery and the recycling of the catalyst by simple application of a magnetic field and offers an enhancement of the catalytic efficiency.

Nanotechnology published new progress about Adsorption. 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

Tamura, Masazumi published the artcileOrganic compound modification of CeO2 and 2-cyanopyridine hybrid catalyst in carbonate synthesis from CO2 and alcohols, Product Details of C6H4N2, the main research area is cerium oxide carbon dioxide surface modification dialkyl carbonate.

The effect of surface modification of CeO2 and 2-cyanopyridine hybrid catalyst with organic compounds was investigated by using dialkyl carbonate synthesis from CO2 and alcs. Phenol is the useful modifier for CeO2 and 2-cyanopyridine hybrid catalyst without drastic decrease of the activity. Based on the characterizations of phenol-modified CeO2 and 2-cyanopyridine hybrid catalyst such as TG-DTA, GC, FTIR and UV-vis, phenol and 2-cyanopyridine were adsorbed on CeO2 at the same time and the adsorption ratio to the surface Ce on CeO2 is estimated to be 0.11 and 0.12, resp. (2-cyanopyridine/Ce on CeO2 surface = 0.12, phenol/Ce on CeO2 surface = 0.11). The reactivity of alcs. was changed by the addition of phenol due to the steric hindrance of phenol adsorbed on CeO2. The effect of the steric hindrance was large at the C2 and C3 positions of alcs., which corresponds to the C2 and C3 positions of phenol. The reactivity was drastically decreased in the cases of C2 position-branched alcs. compared with the case without phenol addition, and the yield ratio (The yield without phenol/the yield with phenol) increased: 61 in the case of 2-ethyl-1-butanol, 9.9 in the case of 2-methyl-1-butanol, and 3.7 in the case of 1-butanol. From the DFT calculations, phenol is adsorbed nearby 2-cyanopyridine adspecies by the p-p interaction between the aromatic rings of these chems. to decrease the reaction space over CeO2, resulting in the reactivity decrease of the steric alcs., particularly the alcs. with substituents at the C2 position. Therefore, phenol can restrict the reaction field of CeO2 and 2-cyanopyridine hybrid catalyst by the steric hindrance, enabling the control of the reactivity of alcs. in the synthesis of dialkyl carbonates from CO2 and alcs.

Journal of CO2 Utilization published new progress about Adsorption. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Product Details of C6H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Enkelmann, Dennis published the artcileCyanopyridines – Suitable Heterocycles for Cocrystal Syntheses, HPLC of Formula: 100-70-9, the main research area is cyanopyridine dicarboxylic acid crystal structure hydrogen bond intramol potential.

2-Cyanopyridine and 4-cyanopyridine were investigated for the controlled synthesis of cocrystals by applying the pKa rule. Cocrystals were designed with oxalic, glutaric and adipic acids and analyzed by single crystal X-ray diffraction. To get a deeper insight into the aggregation behavior of the designed cocrystals, UNI Force Field Calculations were used to compare the intermol. potentials of the main interactions of the crystal structures.

European Journal of Inorganic Chemistry published new progress about Aggregates. 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

Zhou, Zhong published the artcileSilver-Catalyzed Cross Dehydrogenative Coupling between Heteroarenes and Cyclic Ethers under Mild Conditions, COA of Formula: C6H4N2, the main research area is hereroaryl cyclic ether preparation; heteroarene cyclic ether cross dehydrogenative coupling silver catalyst.

A new strategy for the straightforward alkylation of heteroarenes (such as 2-phenylpyridine, 2-methylquinoline, 6-bromo-isoquinoline, etc.) under mild conditions was developed. Silver catalyst was employed for the cross dehydrogenative coupling between heteroarenes and cyclic ethers (such as THF, tetrahydropyran, [1,4]dioxane, [1,3]dioxolane) to construct a new C(sp2)-C(sp3) bond. This reaction was carried out in water under room temperature and applicable to various heteroarenes such as pyridines, quinolines and isoquinolines derivatives with good functional group compatibility.

ChemistrySelect published new progress about Alkylation. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, COA of Formula: C6H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Tarawneh, Amer H. published the artcileA new and convenient synthetic method for 4-aminoquinoline-3-carbonitrile and its derivatives, Synthetic Route of 1885-29-6, the main research area is aminoquinoline carbonitrile preparation; cyanoethylamino benzonitrile preparation chemoselective Thorpe Ziegler cyclization; anthranilonitrile bromopropanenitrile monoalkylation.

A convenient approach is described for the general synthesis of 4-aminoquinoline-3-carbonitrile I [R = H, 6-Me, 7-Me, 6-F] scaffolds. A series of substituted anthranilonitriles RC6H3(2-CN)NH2 [R = H, 4-Me, 5-Me, 5-F] bearing electron-donating and-withdrawing groups on the arene reacts with 3-bromopropanenitrile and t-BuOK in anhydrous DMF at ca. 24°C. A wide variety of bases have been used to optimize selective mono-N-alkylation. The best conditions lead to the corresponding 2-(cyanoethylamino)benzonitriles RC6H3(2-CN)NH(CH2)2CN in moderate or good yields. Thorpe-Ziegler cyclization of the N-unprotected 2-(cyanoethylamino)benzonitrile analogs with t-BuLi in THF at -78°C gives I in moderate yields. Owing to their vicinal amino and cyano functional groups that can function as enaminonitrile moieties, 4-aminoquinoline-3-carbonitriles I are attractive building blocks frequently used in ring construction.

Heterocycles published new progress about Alkylation. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Synthetic Route of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Garcia-Vazquez, Rocio published the artcileDevelopment of 18F-labeled bispyridyl tetrazines for in vivo pretargeted PET imaging, Quality Control of 100-70-9, the main research area is bispyridyl tetrazines PET imaging nucleophilic substitution; PET; bioorthogonal chemistry; bispyridyl tetrazines; fluorine-18; molecular imaging; pretargeted imaging; tetrazine ligation.

Pretargeted PET imaging is an emerging and fast-developing method to monitor immuno-oncol. strategies. Currently, tetrazine ligation is considered the most promising bioorthogonal reaction for pretargeting in vivo. Recently, we have developed a method to 18F-label ultrareactive tetrazines by copper-mediated fluorinations. However, bispyridyl tetrazines-one of the most promising structures for in vivo pretargeted applications-were inaccessible using this strategy. We believed that our successful efforts to 18F-label H-tetrazines using low basic labeling conditions could also be used to label bispyridyl tetrazines via aliphatic nucleophilic substitution. Here, we report the first direct 18F-labeling of bispyridyl tetrazines, their optimization for in vivo use, as well as their successful application in pretargeted PET imaging. This strategy resulted in the design of [18F]45, which could be labeled in a satisfactorily radiochem. yield (RCY = 16%), molar activity (Am = 57 GBq/μmol), and high radiochem. purity (RCP > 98%). The [18F]45 displayed a target-to-background ratio comparable to previously successfully applied tracers for pretargeted imaging. This study showed that bispyridyl tetrazines can be developed into pretargeted imaging agents. These structures allow an easy chem. modification of 18F-labeled tetrazines, paving the road toward highly functionalized pretargeting tools. Moreover, bispyridyl tetrazines led to near-instant drug release of iTCO-tetrazine-based ′click-to-release′ reactions. Consequently, 18F-labeled bispyridyl tetrazines bear the possibility to quantify such release in vivo in the future.

Pharmaceuticals published new progress about Alkylation. 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

Walden, Melissa T. published the artcileHomoleptic platinum(II) complexes with pyridyltriazole ligands: excimer-forming phosphorescent emitters for solution-processed OLEDs, Category: nitriles-buliding-blocks, the main research area is platinum complex pyridyltriazole ligand phosphorescent emitter OLED solution processing.

Two new homoleptic platinum(II) complexes are reported that feature aryl-appended 5-(2-pyridyl)-1,2,4-triazole chelates acting as NN̂- ligating ions, PtL12 and PtL22. Readily prepared from easily accessible proligands, they offer good solubility in organic solvents, allowing them to be incorporated into OLEDs through solution processing. Crystal structures reveal staggered, face-to-face packing of the π systems in adjacent complexes, but with no close Pt···Pt interactions. The complexes display bright unimol. phosphorescence: for PtL12 and PtL22 resp., λmax = 502 and 514 nm; Φ = 0.21 and 0.48; τ = 5.1 and 4.6 μs in deoxygenated CH2Cl2 at 295 K. Both complexes show a strong propensity to form intensely emissive excimers at higher concentrations: λmax = 585 and 625 nm for PtL12 and PtL22. The photophys. properties in doped and neat thin films have been investigated using steady-state and time-resolved methods. These studies highlight the presence of different environments of bimol. excited states with different lifetimes, those emitting at lowest energy apparently having the longest lifetimes, contrary to what is normally found for unimol. emitters through the effects of vibrational deactivation. The prototype solution-processed OLEDs gave EQEs of 9.6-12.5% for PtL12 and 8.8-11.4% for PtL22, impressive values for solution-processed devices incorporating such simple complexes and only a little inferior to the EQE of 15% achieved using PtL12 in a device prepared by evaporation Compounds of this type have potential to provide the red and green components for white light OLEDs, due to their tunable, uni- and bimol. excited state emission.

Journal of Materials Chemistry C: Materials for Optical and Electronic Devices published new progress about Bond angle. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Wang, Bing published the artcileNovel axial substituted subphthalocyanines and their TiO2 nanocomposites: Synthesis, structure, theoretical calculation and their photocatalytic properties, Recommanded Product: Phthalonitrile, the main research area is titanium dioxide nanocomposite electronic transition photocatalytic property.

For the study, we reported the synthesis and characteristics of two subphthalocyanines H12SubPcB-Br (SubPc-1) and H12SubPcB-OPh2OH (SubPc-2), in addition to their resp. composites with nano-titanium dioxide (TiO2). SubPc-1 and SubPc-2 were composed by the measure of hydrotherm with toluene on the scene. The approaches of DFT and TD-DFT were used to research the electronic structure and optical spectra in the subphthalocyanines. The photocatalytic activities of pristine TiO2 particle and TiO2/SubPc composites went through the test to degrade methyl orange (MO) and bromophenol blue (BB) in irradiance of visible light. It is demonstrated from the results that all the TiO2/SubPc photocatalysts exhibited further improved efficiency approx. 72.4% and 29.2% for the degradation of MO and BB under visible light, in comparison with pure TiO2. Furthermore, the reusability studies showed that photocatalytic activity could be maintained over 84% after five recycles.

Materials Today Communications published new progress about Bond angle. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Recommanded Product: Phthalonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts