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COA of Formula: C48H38CoN4O4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about On the Reduction of O2 on Cathode Surfaces of Co-Corrin and Co-Porphyrin: A Computational and Experimental Study on Their Relative Efficiencies in H2O/H2O2 Formation. Author is Huang, Wen-Fei; Chang, Sun-Tang; Huang, Hsin-Chih; Wang, Chen-Hao; Chen, Li-Chyong; Chen, Kuei-Hsien; Lin, M. C..

The mechanisms for O2 reduction and H2O/H2O2 formation on Co-corrin and Co-porphyrin cathode surfaces of the proton exchange membrane fuel cell (PEMFC) systems have been studied by hybrid Hartree-Fock/d. functional theory (B3LYP) calculations with the LANL2DZ basis set. The calculations show that the reduced Co-corrin with a single neg. charge (Co-corrin-) is more reactive than the neutral Co-corrin and the doubly charged Co-corrin2-. Both O2 and O adsorptions are most stable on Co-corrin-, rather than Co-corrin or Co-corrin2-. The potential energy profiles show that the decomposition of O2 on both Co-corrin and Co-corrin- can take place energetically favorably without thermal activation. The formation of H2O and H2O2 are predicted to occur by two sep. reaction paths: the HO path and the HOO path. The HO path with H2O as the predominant product on the reduced Co-corrin- surface, the energetically favored surface, under operational cathodic conditions, which is consistent with recent exptl. findings, wherein the PEMFCs with pyrolyzed vitamin B12 containing Co-corrin as catalysts loaded at the cathode, can deliver up to 14.5 A cm-3 at 0.8 V with IR compensation. A similar calculation performed for a Co-porphyrin system shows a significantly less efficient O2 reduction, consistent with the experiment results of the PEMFC power output studies.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)(SMILESS: COC1=CC=C(C=C1)C(C2=[N]3[Co+2]4([N-]56)[N-]7C(C(C8=CC=C(C=C8)OC)=C3C=C2)=CC=C7C(C9=CC=C(C=C9)OC)=C%10C=CC%11=[N]4%10)=C5C=CC6=C%11C%12=CC=C(C=C%12)OC,cas:28903-71-1) is researched.Application of 7524-52-9. The article 《Spectroscopic, Electrochemical, Magnetic and Structural Characterization of an Hexamethylenetetramine Co(II) Porphyrin Complex – Application in the Catalytic Degradation of Vat Yellow 1 dye》 in relation to this compound, is published in Journal of Molecular Structure. Let’s take a look at the latest research on this compound (cas:28903-71-1).

In this study, a new cobaltous-(hexamethylenetetramine) [meso-tetra(para-methoxyphenyl)porphyrin complex] with the formula [CoII(TMPP)(HMTA)] (1) was synthesized. The mol. structure was confirmed in solution by 1H NMR spectroscopy and mass spectrometry methods, and the single crystal x-ray diffraction structure of 1 was determined at both room temperature and low temperature This species was further characterized by IR, UV-visible and fluorescence spectroscopies, magnetic susceptibility measurements and cyclic voltammetry. The chem. reactivity behavior was also assessed theor. through D. Functional Theory (DFT) approach. Magnetic investigation indicates that the Co(II)-HMTA porphyrin 1 species at low temperature is a cobaltous low-spin (S = 1/2) species while at high temperature complex 1 exhibits a spin-crossover low-spin (S = 1/2) ↔ high-spin (S = 3/2). The adsorption kinetic of the “”vat yellow 1 dye”” was carried out in aqueous solution at pH = 6. The exptl. results are better fitted using the pseudo second order model. Furthermore, complex 1 was tested as catalyst in the degradation of the vat yellow 1 dye using an aqueous H2O2 solution and by photodegradation under solar light.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Qualitative discrimination of yeast fermentation stages based on an olfactory visualization sensor system integrated with a pattern recognition algorithm.HPLC of Formula: 28903-71-1.

The volatile organic compounds produced in yeast fermentation are directly related to the degree of fermentation and product quality. This study innovatively proposes a method based on an olfactory visualization sensor system combined with a pattern recognition algorithm to ensure the correct discrimination of the yeast fermentation stages. First, the olfactory visualization sensor system was developed based on a colorimetric sensor array, which was composed of twelve chem. dyes including eleven porphyrins or metalloporphyrins and one pH indicator on a C2 reverse silica-gel flat plate. It was employed as an artificial olfactory sensor system to obtain odor information during the process of yeast fermentation Then, principal component anal. (PCA) was used to reduce the dimension of the data, which were obtained from the olfactory visualization sensor system. Finally, three pattern recognition algorithms, i.e., support vector machine (SVM), extreme learning machine (ELM) and random forest (RF), were used to develop identification models for monitoring the yeast fermentation stages. The results showed that the optimum SVM model was superior to the ELM and RF models with a discrimination rate of 100% in the prediction process. The overall results sufficiently demonstrate that the olfactory visualization sensor system integrated with an appropriate pattern recognition algorithm has a promising potential for the in situ monitoring of yeast fermentation

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Xie, Jinfeng; Ma, Guanfeng; Ouyang, Xinping; Zhao, Lisha; Qiu, Xueqing published the article 《Metalloporphyrin as a Biomimetic Catalyst for the Catalytic Oxidative Degradation of Lignin to Produce Aromatic Monomers》. Keywords: metalloporphyrin biomimetic catalyst lignin catalytic oxidative degradation aromatic monomer.They researched the compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)( cas:28903-71-1 ).Synthetic Route of C48H38CoN4O4. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:28903-71-1) here.

Lignin, an abundant biomass waste, was degraded under microwave irradiation with H2O2 as the oxidant and metalloporphyrin as the catalyst. The effect of substituent group (4-methylphenyl, 4-methoxyphenyl, 4-bromophenyl and 4-carboxyphenyl) at the meso-benzene ring of metalloporphyrin, central metal ion (Co, Mn, Ni and Fe) and axial ligand (chlorine, p-hydroxypyridine, p-pyridinecarboxaldehyde) on the degradation of lignin was investigated. The electron-withdrawing group not only reduces the electron cloud d. on the porphyrin ring, but also promotes the formation of higher active intermediate [(Porp)MeIV=O]+·. Therefore, the presence of stronger electron-withdrawing substituents makes the metalloporphyrins more efficient in lignin degradation Compared to Co porphyrin, there are less amount of [(Porp)MeIV=O]+· formed when Mn, Fe or Ni porphyrin was used as the catalyst for degrading lignin. Consequently, Co porphyrin contributed to a higher YAM (the yield of aromatic monomers). The strong nucleophilicity and the low steric hindrance of axial ligand was advantageous for the stability of metalloporphyrins, which is favorable for improving the catalytic activity to the degradation of lignin. It is found that the YAM increases 20.1% from 5.6% by using CoTBrPPCl as the reaction catalyst under the optimized conditions.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Constructive impact of temperature and frequency on electrical transport performance of cobalt tetramethoxyphenylporphyrin/p-Si hybrid heterojunction solar cell, published in 2019-08-05, which mentions a compound: 28903-71-1, mainly applied to cobalt tetramethoxyphenylporphyrin silicon hybrid heterojunction solar cell elec transport; solar cell temperature frequency constructive impact elec transport, Recommanded Product: 28903-71-1.

Thin films of cobalt tetramethoxyphenylporphyrin, CoTMPP, have been prepared via thermal evaporation method. X-ray anal. exhibits the polycrystalline and amorphous structural formation for the powder form and the film of CoTMPP, resp. Micrographs of SEM reveal that the CoTMPP film is consisting of nanoparticles like spheres structure (15-28 nm) embedded in amorphous matrix. UV-Vis absorption spectroscopy of as-deposited film has been recorded and from which the Sort and Q bands are observed in a wide range of UV-Vis spectrum. Two others weak bands labeled M and N are detected in UV spectral region. In addition, the film of CoTMPP is grown on the single crystal of p-silicon (p-Si) substrate to fabricate Au/CoTMPP/p-Si/Al hybrid heterojunction solar cell. Complex impedance spectroscopy of the fabricated device is investigated from which, Nyquest spectrum is analyzed at different temperatures ranged from 300 to 380 K. The frequency dependent of the imaginary impedance and the elec. modulus exhibit relaxation phenomena that attributed to the CoTMPP/p-Si and p-Si/Al interfaces, resp. Many elec. parameters including activation energies, depletion width, life times, diffusion coefficients and mobility of the charge carriers were determined and interpreted at these interfaces.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Spectroscopic characterization, X-ray molecular structures and cyclic voltammetry study of two (piperazine) cobalt(II) meso-arylporphyin complexes. Application as a catalyst for the degradation of 4-nitrophenol, published in 2021-11-15, which mentions a compound: 28903-71-1, mainly applied to cobalt piperazine arylporphyin complex preparation crystal structure cyclic voltammetry; Hirshfeld surface analysis EPR fluorescence cobalt piperazine arylporphyin complex; adsorption degradation catalyst cobalt piperazine arylporphyin complex, Application In Synthesis of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II).

Two new cobaltous-porphyrin complexes, namely (μ-piperazine)-bis[(meso-tetra(para-methoxyphenyl)porphyrinato)]cobalt(II) and (piperazine)[meso-tetra(para-chlorophenyl)porphyrin]cobalt(II) dichloromethane disolvate, with the formulas [{CoII(TMPP)}2(μ2-pipz)] (complex 1) and [CoII(TClPP)(pipz)]·2CH2Cl2 (complex 2), were used efficiently as catalysts in the degradation of 4-nitrophenol (4-NP) in an aqueous hydrogen peroxide solution These cobalt(II)-pipz porphyrin complexes were characterized by a variety of spectroscopic methods including IR, UV-visible, fluorescence, proton NMR, EPR as well as mass spectrometry. A cyclic voltammetry study was also carried out on these two Co(II) metalloporphyrins. The EPR results indicate that both complexes 1 and 2 are paramagnetic low-spin (S = 1/2) cobalt(II) porphyrin complexes. Furthermore, the x-ray diffraction crystal structures of 1 and 2 were determined, and the intermol. interactions were studied by Hirshfeld surface anal.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Formula: C48H38CoN4O4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Carbon support tuned electrocatalytic activity of a single-site metal-organic framework toward the oxygen reduction reaction. Author is Ma, Wenjie; Wu, Fei; Yu, Ping; Mao, Lanqun.

Metal-organic frameworks (MOFs) possess fantastic features such as structural diversity, tunable accessible pores and atomically dispersed active sites, holding tremendous potential as highly versatile platforms for fabricating single-site catalysts. The electrocatalytic activity of single-site MOFs can be improved and tuned via several approaches; however, the exploitation of different carbon supports to modulate the nature of single active sites in MOFs for electrocatalysis has not been reported. Here, we find that the electrocatalytic activity of single-site MOFs toward the oxygen reduction reaction (ORR) can be tuned by using carbon nanomaterials, i.e., carbon nanotubes and graphene, as supports through MOF-support interactions in the manner of geometric and electronic effects. The introduction of MOF-support interactions not only greatly improves the electrocatalytic performance of MOFs toward the ORR in terms of onset and half-wave potentials and c.d., but also alters the reaction pathway of the ORR. This finding provides a new horizon for the design and synthesis of single-site MOFs for electrocatalysis.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Effect of N,N,N’-trimethylpiperazinium (TMP+) cations on magnetic properties and dimerization of fullerenes in the (TMP+)(CoIIporphyrin)(C-60) salts.Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II).

New salts of fullerene C•-60 radical anions with N,N,N’-trimethylpiperazinium cations (TMP+) containing neutral cobalt(II) porphyrin mols.: {(TMP+)·CoIIOEP}·(C•-60)·2C6H4Cl2·C6H5CN (1) and (TMP+)3{CoIITMPP·(C-60)}2(C•-60) ·C6H4Cl2·C6H5CN (2) were obtained (OEP and TMPP are octaethyl- or tetrakis(4-methoxyphenyl)porphyrins, resp.). In these salts the C•-60 radical anions or the TMP+ cations with free nitrogen atom can coordinate to cobalt(II) porphyrins and form Co-C(C-60) or Co-N(TMP+) bonds. The properties of these salts and the possibility of fullerene dimerization depend on type of bonds formed. For example, TMP+ cations in 1 form coordination (TMP+)·CoIIOEP assemblies preserving free nonbonded C•-60 radical anions. They are effectively coupled with S = 1/2 spins localized on CoIIOEP (Weiss temperature is -27 K and decrease of magnetic moment of 1 is observed <150 K). Previously the {(MDABCO+)·CoIITMPP}2·(C-60)2·(C6H4Cl2)2.5·(C6H5CN)1.5 salt was obtained in which doubly-bonded (C-60)2 dimers were found. In contrast to this salt, TMP+ cations in 2 preserved uncoordinated allowing the formation of the Co-C(C-60) bond of 2.273(3) Å length in the diamagnetic σ-bonded CoIITMPP·(C-60) anions. In coordinated state, fullerene anions cannot dimerize in 2 in spite of that their mutual arrangement and short interfullerene distances are favorable for such dimerization. Thus, variation of cations in the (Cation+)(CoIIporphytin)(C-60) salts drastically affects their properties and allows one to control dimerization of fullerene anions. When you point to this article, it is believed that you are also very interested in this compound(28903-71-1)Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II) and due to space limitations, I can only present the most important information.

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Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)( cas:28903-71-1 ) is researched.Application of 28903-71-1.Chen, Chen; Zuo, Huiping; Chan, Kin Shing published the article 《Catalytic hydrodebromination of aryl bromides by cobalt tetra-butyl porphyrin complex with EtOH》 about this compound( cas:28903-71-1 ) in Tetrahedron. Keywords: cobalt porphyrin complex catalyst hydrodebromination aryl bromide ethanol. Let’s learn more about this compound (cas:28903-71-1).

Hydrodebromination of aryl bromides catalyzed by electron rich and sterically unhindered cobalt 5,10,15,20-tetrabutylporphyrin was achieved at mild conditions in good yields employing EtOH as the hydrogen source. The catalytic efficiency was enhanced compared with previously reported cobalt tetra-aryl porphyrin catalysts. A revised mechanism of single electron transfer was proposed.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Electron-Transfer Ionization of Nanoparticles, Polymers, Porphyrins, and Fullerenes Using Synthetically Tunable α-Cyanophenylenevinylenes as UV MALDI-MS Matrices. Author is Ramirez-Pradilla, Juan S.; Blanco-Tirado, Cristian; Combariza, Marianny Y..

Electron-transfer ionization in matrix-assisted laser desorption/ionization (ET-MALDI) is widely used for the anal. of functional materials that are labile, unstable, and reactive in nature. However, conventional ET matrixes (e.g., trans-2-[3-(4-tert-butylphenyl)-2-methyl-2-propenylidene] malononitrile (DCTB)) still lack in performance due to cluster formation, reactivity with analytes, and vacuum instability. In this contribution, we report the use of α-cyanophenylenevinylene derivatives as UV MALDI matrixes for the anal., by ET ionization, of nanoparticles, polymers, porphyrins, and fullerenes. The synthetic versatility of the phenylenevinylene (PV) core allowed us to modulate physicochem. properties, fundamental for efficient formation of primary ions in the gas phase under MALDI conditions, such as planarity, ionization potentials, molar absorptivity, and laser thresholds. For instance, introduction of -CN groups in vinyl positions of the PV core induced structural disruption in planarity in the new α-CNPV derivatives, shifting their maximum molar absorptivity to UV wavelengths and increasing their ionization energy values above 8.0 eV. UV MALDI-relevant photophys. properties in solution and solid state are reported (λmax and ε355nm). LDI spectra of α-CNPVs exhibit predominant signals due to M+• and [M + H]+ species, whereas the standard matrix DCTB shows peaks associated with clusters and nondesirable products. The mass spectrometry (MS) performance of six α-CNPV derivatives was assessed for the ionization of a standard compound, with α-CNPV-CH3 and α-CNPV-OCH3 exhibiting better anal. figures of merit than those of a standard matrix (DCTB). These new matrixes display high vacuum stability (79%) for up to 240 min of residence in the ionization source, in contrast with DCTB with 13%. Vacuum stability is vital, particularly for applications such as high-throughput anal. and imaging MS. In addition, when a mixture of 20 analytes (PAHs, porphyrins, and triphenylamine dyes) ranging from m/z 300 to 1700 was analyzed via ET-MALDI, we observed analyte coverage of 90% with the α-CNPV-CH3 derivative, whereas DCTB afforded only 70%. Finally, α-CNPV-CH3 was tested and compared with DCTB, as ET-MALDI matrix for petroporphyrins, conjugated polymers, gold nanoparticles, and fullerene derivatives anal., outperforming in most cases the standard matrix.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com