Month: December 2022

Zhou, He-Ye published the artcileA Calix[3]acridan-Based Host-Guest Cocrystal Exhibiting Efficient Thermally Activated Delayed Fluorescence, Application of Phthalonitrile, the main research area is thermally activated delayed fluorescence; Charge Transfer; Cocrystal; Host-Guest Interactions; Macrocycles; Thermally Activated Delayed Fluorescence.

A supramol. strategy to construct thermally activated delayed fluorescence (TADF) materials through host-guest charge transfer interactions was proposed. Consequently, a new class of macrocycle namely calix[3]acridan was conveniently synthesized in 90% yield. The host-guest cocrystal formed by calix[3]acridan and 1,2-dicyanobenzene exhibited efficient TADF properties due to intense intermol. charge transfer interactions. Moreover, the spatially separated HOMO and LUMO resulted in a very small singlet-triplet energy gap of 0.014 eV and hence guaranteed an efficient reverse intersystem crossing for TADF. Especially, a high photoluminescence quantum yield of 70% was achieved, and it represents the highest value among the reported intermol. donor-acceptor TADF materials.

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

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Yu, Xinye published the artcileStudies on the isomeric effect of nitrile functionality on the polymerization and thermal properties of ortho-norbornene-based benzoxazine resins, Safety of 2-Aminobenzonitrile(Flakes or Chunks), the main research area is nitrile norbornene benzoxazine resin polymerization isomeric effect thermal property.

Three norbornene-functional mono-benzoxazines with attached nitrile group at the para-, meta-, and ortho-position with respect to the nitrogen atom in the oxazine ring, resp., have been synthesized to investigate the isomeric effect of nitrile group on the polymerization and thermal properties of resulting polybenzoxazines. The chem. structures of newly obtained benzoxazine monomers are investigated by 1H and 13C NMR spectroscopy and FT-IR spectroscopy. Besides, the polymerization behaviors including oxazine ring, nitrile group as well as norbornene functionality in each benzoxazine are studied by differential scanning calorimetry (DSC) and in situ FT-IR. In addition, the thermal properties of corresponding polybenzoxazines are investigated by TGA. The nitrile group at ortho-position in benzoxazine has been found to be easier activated to polymerize compared with other two isomers. Moreover, the resulting polybenzoxazine derived from ortho-nitrile containing benzoxazine also shows the best thermal stability with a Td5 of 371°C, and a char yield of 56%.

Journal of Polymer Research published new progress about Melting point. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Safety of 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Saiful, Islam published the artcileLigand Rotation Induced Oxidation State Change and Spin Appearance of the Bis(phthalocyaninato)cerium (CePc2) Molecule on the Au(111) Surface, Quality Control of 91-15-6, the main research area is phthalocyaninatocerium gold surface structure mol rotation.

We demonstrate that a nonmagnetic mol. is changed into magnetic when its internal structure is rotated by forming an ordered film on a metal surface. We used a double-decker complex, bis(phthalocyaninato)cerium (CePc2), where the valence of the Ce atom changes between +3 and +4 with a small energy barrier. CePc2 is nonmagnetic in bulk and becomes magnetic in the monolayer film on Au(111). The intra-mol. structure and the magnetic property are revealed using scanning tunneling microscopy/spectroscopy. We attribute the mechanism to a change of the rotational angle (θ) between the upper and lower Pc ligands, driven by the steric repulsive force originating from forming an almost square lattice on Au(111). The θ changes from θ = 45° of the bulk value into θ = 0° for the film. GGA + U calculation indicates that the change from θ = 45° to θ = 0° causes the Ce valence change from the nonmagnetic +4 state into the magnetic +3 state.

Journal of Physical Chemistry C published new progress about Force, steric. 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

O’Neill, Matthew F. published the artcileSustainable Synthesis of Dimethyl- and Diethyl Carbonate from CO2 in Batch and Continuous Flow-Lessons from Thermodynamics and the Importance of Catalyst Stability, SDS of cas: 100-70-9, the main research area is sustainable dimethyl diethyl carbonate CO2 batch lesson thermodn catalyst.

Equilibrium conversions for the direct condensation of MeOH and EtOH with CO2 to give dimethyl- and di-Et carbonate, resp., have been calculated over a range of exptl. relevant conditions. The validity of these calculations has been verified in both batch and continuous flow experiments over a heterogeneous CeO2 catalyst. Operating under optimized conditions of 140°C and 200 bar CO2, record productivities of 235 mmol/L·h DMC and 241 mmol/L·h DEC have been achieved using neat alc. dissolved in a continuous flow of supercritical CO2. Using our thermodn. model, we show that to achieve maximum product yield, both dialkyl carbonates and water should be continuously removed from the reactor instead of the conventionally used strategy of removing water alone, which is much less efficient. Catalyst stability rather than activity emerges as the prime limiting factor and should thus become the focus of future catalyst development.

ACS Sustainable Chemistry & Engineering published new progress about Drying agents. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, SDS of cas: 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Rajagopal, Krishnamurthy published the artcileKerr effect of some new organic Kerr solutions, Computed Properties of 5653-62-3, the main research area is electrooptical Kerr effect organic solution.

The electro optic Kerr constant of many new organic solutions comprising of the substituted aromatic carbonyl and nitrile compounds as solutes in nitrobenzene, for various molar concentrations of the solutes has been measured. We found several solutions having Kerr constants greater than that of nitrobenzene. The interactions between the components in these solutions have been established to be dipole-dipole in nature for the first time by conducting experiments and measuring the dipole moments for solutions of various molar concentrations The variations of the dipole moment with concentration in many solutions have been found to follow the same trend of variations of Kerr constant with molar concentration

Journal of the Physical Society of Japan published new progress about Dipole moment. 5653-62-3 belongs to class nitriles-buliding-blocks, name is 2,3-Dimethoxybenzonitrile, and the molecular formula is C9H9NO2, Computed Properties of 5653-62-3.

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

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

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

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

Tamoradi, Taiebeh published the artcileNeodymium immobilized on Fe3O4: A new and recoverable catalyst for oxidation reactions and synthesis of 5-substituted 1H-tetrazoles in green condition, HPLC of Formula: 91-15-6, the main research area is tetrazole neodymium iron oxide recoverable catalyst green condition.

Magnetic nanoparticle functionalized with neodymium complex as catalyst and characterized by SEM, XRD, FT-IR, TGA, EDX and ICP techniques. Then, catalytic activity of prepared catalyst was examined in the synthesis of tetrezoles and oxidation reactions in which observed short reaction time and high yield in these reactions.

Polyhedron 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