Category: 91-15-6

Molaei, Somayeh published the artcileImmobilization of cerium (IV) and erbium (III) in mesoporous MCM-41: Two novel and highly active heterogeneous catalysts for the synthesis of 5-substituted tetrazoles, and chemo- and homoselective oxidation of sulfides, HPLC of Formula: 91-15-6, the main research area is cerium immobilized serine functionalized mesoporous silica preparation surface structure; erbium immobilized serine functionalized mesoporous silica preparation surface structure; sulfide oxidation heterogeneous catalyst green chem; sulfoxide preparation; nitrile sodium azide heterogeneous catalyst green chem; tetrazole preparation.

Two well-ordered 2D-hexagonal cerium (IV) and erbium (III) embedded functionalized mesoporous MCM-41(MCM-41@Serine/Ce and MCM-41@Serine/Er) was developed via functionalization of mesoporous MCM-41. The surface modification method was used in the preparation of serine-grafted MCM-41 and led to the development of MCM-41@Serine. The reaction of MCM-41@Serine with Ce(NH4)2(NO3)6·2H2O or ErCl3·6H2O in ethanol under reflux led to the organization of MCM-41@Serine/Ce and MCM-41@Serine/Er catalysts. The structures of these catalysts were determined using SEM, mapping, energy-dispersive X-ray spectroscopy, Fourier transform-IR, thermogravimetric anal., X-ray diffraction, inductively coupled plasma and Brunauer-Emmett-Teller anal. These MCM-41@Serine/Ce and MCM-41@Serine/Er catalysts showed outstanding catalytic performance in sulfides oxidation and synthesis of 5-substituted tetrazoles. These catalysts can be recycled for seven repeated reaction runs without showing a considerable decrease in catalytic performance.

Applied Organometallic Chemistry published new progress about Crystallinity. 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

Liu, Xianyuan published the artcileThermally conductive and electrically insulating alumina-coated graphite/phthalonitrile composites with thermal stabilities, Quality Control of 91-15-6, the main research area is alumina coated graphite phthalonitrile composite elec insulating thermal stability.

Alumina-coated graphite (Al2O3@graphite) core-shell particles were firstly synthesized by a liquid-phase chem. precipitation with the aid of sodium dodecyl sulfonate (SDS) surfactant using an inorganic precursor, then to fabricate thermally conductive and elec. insulating phthalonitrile composites by a hot-compression method. The obtained composite with 40 wt% Al2O3@graphite exhibited a thermal conductivity of 1.409 W/mK, 6.6 times that of pristine phthalonitrile matrix (0.214 W/mK). And the composites still retained elec. insulation below 20 wt% Al2O3@graphite content. Moreover, excellent thermal stabilities had been observed, compared with the glass transition temperature of pristine phthalonitriles (460°C), the glass transition temperature of the composites decreased slightly but still high. Addnl., at 20 wt% content, the weight loss temperature (T5 and T10) and the char yield at 1000°C (Yc1000) were 525°C, 589°C and 74.9% which was 8°C, 14°C and 3.1% higher than that of pristine phthalonitriles, resp., which holds potential for use in the high temperature thermal management.

Composites Science and Technology published new progress about Decomposition. 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

Aymonino, Fabrice published the artcileDegradation of PAI/PEI enamel under high temperature (Up to 400♂C), Recommanded Product: Phthalonitrile, the main research area is polyesterimide polyamide imide enamel degradation temperature.

This work deals with the understanding of the degradation of the primary insulation (PEI/PAI) of rotating machines working temporarily under high-temperature The main domain of application of these motors is the smoke extraction either from tunnels or underground parking when a fire occurs. In such a critical situation, the internal temperature of the motor winding may reach temperatures up to 400 °C. Under such very high thermal stresses, the behavior of the elec. insulation is not well understood. This work proposes an anal. of the decomposition gases under very high temperatures and the corresponding degradation pathway. A simple method is proposed to identify whether the insulation of such motors has been strongly damaged during the working time at very high temperatures, thus allowing estimating if it can still continue to operate.

Materials Sciences and Applications published new progress about Decomposition. 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

de Souza, Thalita F. M. published the artcileUnsymmetrical zinc(II) phthalocyanine and zinc(II) naphthalocyanine with 2,3-Dicyano-1,4-diphenylnaphthalene precursor, Category: nitriles-buliding-blocks, the main research area is unsym zinc phthalocyanine naphthalocyanine preparation photophys photochem; dicyanodiphenylnaphthalene precursor preparation; Diels Alder diphenylisobenzofuran fumaronitrile.

The synthesis, photophys. and photochem. properties of an unsym. zinc(II) phthalocyanine and zinc(II) naphthalocyanine derivative are described. The precursor 2,3-Dicyano-1,4-diphenylnaphthalene was synthesized by Diels-Alder reaction with 1,3-diphenylisobenzofuran and fumaronitrile. The macrocycles were characterized by MALDI-TOF, FTIR, 1H NMR and UV-vis. On their spectroscopy, the impact of the added aromatic moiety was investigated in solution, observing a bathochromic shift in UV-vis absorption, emission and excitation spectra. The structural and electronic properties indicated that the geometry reorganization during the excitation and relaxation processes, and the dipole moment of the ground state, increases the generation of singlet oxygen in solution

Dyes and Pigments published new progress about Dipole moment. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Category: nitriles-buliding-blocks.

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

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

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

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

Moeini, Nazanin published the artcileSelective oxidation of sulfides and synthesis of 5-substituted 1H-tetrazoles on Ce (III) immobilized CoFe2O4 as a magnetically separable, highly active, and reusable nanocatalyst, COA of Formula: C8H4N2, the main research area is cobalt iron oxide nanocatalyst cerium immobilized amino glycol preparation; tetrazole green preparation; nitrile sodium azide cobalt iron oxide nanocatalyst cerium immobilized; sulfoxide green preparation; sulfide oxidation cobalt iron oxide nanocatalyst cerium immobilized.

Reactions of CoFe2O4 magnetic nanoparticles supported ligands, 2-amino-2-methyl-1,3-propanediol (Amino glycol), with cerium salts provided the resp. anchored complex CoFe2O4 @Amino glycol/Ce. The nanocatalyst was characterized perfectly using thermogravimetric analyzes, FT-IR spectroscopy, SEM, energy-dispersive X-ray inductively coupled plasma optical emission spectroscopy vibrational sample magnetometry and powder X-ray diffraction. CoFe2O4 magnetic nanoparticles supported ligands with cerium salts afforded active catalysts for the synthesis of 5-substituted 1H-tetrazoles I [R = Ph, 2-ClC6H4, Bn, etc.] via reaction of nitriles and sodium azide/oxidation of sulfides RSR1 [R = Ph, n-Pr, Et, etc.; R1 = Me, Bn, Ph, etc.] using Me Ph sulfide with H2O2 as oxidant at mild reaction conditions in the green medium under optimized conditions. The ligand and metal atom identity influenced the catalytic activity of the nanocatalyst. The immobilized complexes were easily collected via an external magnetic field and further reused at least 6 times without significant loss of catalytic activity and selectivity.

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

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts