Tag: M.W=700-900

Li, Luqing; Li, Menghui; Liu, Ying; Cui, Qingqing; Bi, Keyi; Jin, Shanshan; Wang, Yujie; Ning, Jingming; Zhang, Zhengzhu published the article 《High-sensitivity hyperspectral coupled self-assembled nanoporphyrin sensor for monitoring black tea fermentation》. Keywords: nanoporphyrin sensor black tea fermentation self assembly hyperspectral imaging.They researched the compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)( cas:28903-71-1 ).Safety of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II). 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.

The rapid and scientific method for monitoring the quality of black tea fermentation is of great significance to the quality control of black tea production This study proposed a novel method for evaluating the fermentation quality of black tea by using hyperspectral imaging technol. with self-assembled nanoporphyrin (N-TPP) dyes, which were used as aroma capture probes in the black tea fermentation process. SEM and UV-visible spectroscopy were performed to characterize the N-TPP. Then, the results of the colorimetric sensor array (conventional camera color method) and the proposed hyperspectral methods were compared. Finally, the hyperspectral information of N-TPP with higher sensitivity was collected, and the qual. models of evaluating black tea fermentation quality were established using support vector machine (SVM), extreme learning machine, and linear discriminant anal. Among these models, the SVM model exhibited the highest discriminant accuracy. The accuracy of the SVM model based on the hyperspectral information of the self-assembled N-TPP array was 98.85 %, which was considerably higher than that (68.97 %) of the SVM model based on the color information of the porphyrin array. The results revealed that the proposed method can effectively improve the monitoring accuracy of black tea fermentation quality.

After consulting a lot of data, we found that this compound(28903-71-1)Safety of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II) can be used in many types of reactions. And in most cases, this compound has more advantages.

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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about Constructive impact of temperature and frequency on electrical transport performance of cobalt tetramethoxyphenylporphyrin/p-Si hybrid heterojunction solar cell, the main research direction is cobalt tetramethoxyphenylporphyrin silicon hybrid heterojunction solar cell elec transport; solar cell temperature frequency constructive impact elec transport.HPLC of Formula: 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.

After consulting a lot of data, we found that this compound(28903-71-1)HPLC of Formula: 28903-71-1 can be used in many types of reactions. And in most cases, this compound has more advantages.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 28903-71-1, is researched, SMILESS is 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, Molecular C48H38CoN4O4Journal, Science China: Chemistry called Photocatalyst-controlled and visible light-enabled selective oxidation of pyridinium salts, Author is Peng, Xiang-Jun; He, Hai-Ping; Liu, Qian; She, Kun; Zhang, Bao-Qi; Wang, Heng-Shan; Tang, Hai-Tao; Pan, Ying-Ming, the main research direction is alkylpyridinium halide rhodamine photocatalyst regioselective ring opening recyclization green; alkylpyrrole carbaldehyde preparation; arylmethyl pyridinium halide cobalt catalyst regioselective photooxidation rearrangement green; aryl pyridinyl methanone preparation.Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II).

This study proposed two different methods of photocatalytic-controlled and visible light-induced selective oxidation of pyridiniums with air as the terminal oxidant. The key to these transformations was to choose the appropriate light source and photocatalyst. Pyridiniums were successfully converted into pyrroles through oxygen-mediated cycloaddition, proton-coupled electron transfer (PCET), pyridine ring opening, and recyclization. The other route was that pyridiniums selectively form 4-carbonyl pyridines through free radical rearrangement/aerobic oxidation under the catalysis of cobalt (II).

After consulting a lot of data, we found that this compound(28903-71-1)Name: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II) can be used in many types of reactions. And in most cases, this compound has more advantages.

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

Application In Synthesis of 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 High-sensitivity hyperspectral coupled self-assembled nanoporphyrin sensor for monitoring black tea fermentation. Author is Li, Luqing; Li, Menghui; Liu, Ying; Cui, Qingqing; Bi, Keyi; Jin, Shanshan; Wang, Yujie; Ning, Jingming; Zhang, Zhengzhu.

The rapid and scientific method for monitoring the quality of black tea fermentation is of great significance to the quality control of black tea production This study proposed a novel method for evaluating the fermentation quality of black tea by using hyperspectral imaging technol. with self-assembled nanoporphyrin (N-TPP) dyes, which were used as aroma capture probes in the black tea fermentation process. SEM and UV-visible spectroscopy were performed to characterize the N-TPP. Then, the results of the colorimetric sensor array (conventional camera color method) and the proposed hyperspectral methods were compared. Finally, the hyperspectral information of N-TPP with higher sensitivity was collected, and the qual. models of evaluating black tea fermentation quality were established using support vector machine (SVM), extreme learning machine, and linear discriminant anal. Among these models, the SVM model exhibited the highest discriminant accuracy. The accuracy of the SVM model based on the hyperspectral information of the self-assembled N-TPP array was 98.85 %, which was considerably higher than that (68.97 %) of the SVM model based on the color information of the porphyrin array. The results revealed that the proposed method can effectively improve the monitoring accuracy of black tea fermentation quality.

Although many compounds look similar to this compound(28903-71-1)Application In Synthesis of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), numerous studies have shown that this compound(SMILES: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), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

Glazkova, M. E.; Ageeva, T. A.; Rodina, Yu. S.; Koifman, O. I. published an article about the compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)( cas:28903-71-1,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 ).Application of 28903-71-1. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:28903-71-1) through the article.

The article presents the results of the kinetics study of the cobalt porphyrins interaction with radical polymerization initiators – benzoyl peroxide and lauryl peroxide in solution by the spectrophotometric method. From disparate literature data, it is known that some metalloporphyrins can interact with benzoyl peroxide to form the tautomers of porphyrins – isoporphyrins. These compounds have a number of specific properties, for example, it can be catalysts of various processes. Perhaps the isoporphyrins formation is the reason for high activity of the initiating systems “”cobalt porphyrin – benzoyl peroxide”” in the polymerization of vinyl monomers. Cobalt(II)complexes of tetraphenylporphyrin, tetra-p-methoxyphenylporphyrin, 5,15-bis(4′-tert-butylphenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetra-p-butylporphyrin were selected as the objects of this study. The influence of the porphyrin ligand structure on the formation of cobalt isoporphyrins was estimated The interaction of cobalt (II) tetraphenylporphyrin and cobalt (II) tetra-para-methoxyphenylporphyrin with peroxides showed changes in the electronic absorption spectra of metalloporphyrins: deformation of the Soret band, reduction of the absorption band in the visible region, and the appearance of absorption bands in the near IR region. These changes are characteristic for metalloisoporphyrins. Data on the interaction of cobalt porphyrins with lauryl peroxide were obtained for the first time. The formation of isoporphyrins is possible with the different ratio of concentrations of reagents: with a lack of peroxide, with equimolar ratio, and also with a significant (100-fold) excess of peroxide. When 5,15-bis(4′-tert-butylphenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetra-p-butylporphyrinate cobalt (II) reacted with peroxides, no isoporphyrinates were observed The article presents the effective reaction rate constants of the cobalt isoporphyrinates formation at 25°C.It is shown that the structure of both cobalt porphyrinates and organic peroxides affects the possibility and rate of isoporphyrins formation.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 28903-71-1, is researched, SMILESS is 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, Molecular C48H38CoN4O4Journal, Article, ACS Nano called Molecular approach for engineering interfacial interactions in magnetic/topological insulator heterostructures, Author is Cuxart, Marc G.; Valbuena, Miguel Angel; Robles, Roberto; Moreno, Cesar; Bonell, Frederic; Sauthier, Guillaume; Imaz, Inhar; Xu, Heng; Nistor, Corneliu; Barla, Alessandro; Gargiani, Pierluigi; Valvidares, Manuel; Maspoch, Daniel; Gambardella, Pietro; Valenzuela, Sergio O.; Mugarza, Aitor, the main research direction is interfacial interaction magnetic topol insulator; X-ray magnetic circular dichroism; angle-resolved photoelectron spectroscopy; density functional theory; interfacial interactions; metal−organic molecules; scanning tunneling microscopy; topological insulators.Recommanded Product: 28903-71-1.

Controlling interfacial interactions in magnetic/topol. insulator heterostructures is a major challenge for the emergence of novel spin-dependent electronic phenomena. As for any rational design of heterostructures that rely on proximity effects, one should ideally retain the overall properties of each component while tuning interactions at the interface. However, in most inorganic interfaces, interactions are too strong, consequently perturbing, and even quenching, both the magnetic moment and the topol. surface states at each side of the interface. Here, we show that these properties can be preserved using ligand chem. to tune the interaction of magnetic ions with the surface states. By depositing Co-based porphyrin and phthalocyanine monolayers on the surface of Bi2Te3 thin films, robust interfaces are formed that preserve undoped topol. surface states as well as the pristine magnetic moment of the divalent Co ions. The selected ligands allow us to tune the interfacial hybridization within this weak interaction regime. These results, which are in stark contrast with the observed suppression of the surface state at the first quintuple layer of Bi2Se3 induced by the interaction with Co phthalocyanines, demonstrate the capability of planar metal-organic mols. to span interactions from the strong to the weak limit.

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

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Bronsted Acid Scaling Relationships Enable Control Over Product Selectivity from O2 Reduction with a Mononuclear Cobalt Porphyrin Catalyst, published in 2019-06-26, which mentions a compound: 28903-71-1, Name is 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), Molecular C48H38CoN4O4, Related Products of 28903-71-1.

The selective reduction of O2, typically with the goal of forming H2O, represents a long-standing challenge in the field of catalysis. Macrocyclic transition-metal complexes, and cobalt porphyrins in particular, have been the focus of extensive study as catalysts for this reaction. Here, we show that the mononuclear Co-tetraarylporphyrin complex, Co(porOMe) (porOMe = meso-tetra(4-methoxyphenyl)porphyrin), catalyzes either 2e-/2H+ or 4e-/4H+ reduction of O2 with high selectivity simply by changing the identity of the Bronsted acid in DMF. The thermodn. potentials for O2 reduction to H2O2 or H2O in DMF are determined and exhibit a Nernstian dependence on the acid pKa, while the CoIII/II redox potential is independent of the acid pKa. The reaction product, H2O or H2O2, is defined by the relationship between the thermodn. potential for O2 reduction to H2O2 and the CoIII/II redox potential: selective H2O2 formation is observed when the CoIII/II potential is below the O2/H2O2 potential, while H2O formation is observed when the CoIII/II potential is above the O2/H2O2 potential. Mechanistic studies reveal that the reactions generating H2O2 and H2O exhibit different rate laws and catalyst resting states, and these differences are manifested as different slopes in linear free energy correlations between the log(rate) vs. pKa and log(rate) vs. effective overpotential for the reactions. This work shows how scaling relationships may be used to control product selectivity, and it provides a mechanistic basis for the pursuit of mol. catalysts that achieve low overpotential reduction of O2 to H2O.

Although many compounds look similar to this compound(28903-71-1)Related Products of 28903-71-1, numerous studies have shown that this compound(SMILES: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), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

Quality Control of 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 Bias-free solar syngas production by integrating a molecular cobalt catalyst with perovskite-BiVO4 tandems. Author is Andrei, Virgil; Reuillard, Bertrand; Reisner, Erwin.

The photoelectrochem. (PEC) production of syngas from water and CO2 represents an attractive technol. towards a circular carbon economy. However, the high overpotential, low selectivity and cost of commonly employed catalysts pose challenges for this sustainable energy-conversion process. Here we demonstrate highly tunable PEC syngas production by integrating a cobalt porphyrin catalyst immobilized on carbon nanotubes with triple-cation mixed halide perovskite and BiVO4 photoabsorbers. Empirical data anal. is used to clarify the optimal electrode selectivity at low catalyst loadings. The perovskite photocathodes maintain selective aqueous CO2 reduction for one day at light intensities as low as 0.1 sun, which provides pathways to maximize daylight utilization by operating even under low solar irradiance. Under 1 sun irradiation, the perovskite-BiVO4 PEC tandems sustain bias-free syngas production coupled to water oxidation for three days. The devices present solar-to-H2 and solar-to-CO conversion efficiencies of 0.06 and 0.02%, resp., and are able to operate as standalone artificial leaves in neutral pH solution

Although many compounds look similar to this compound(28903-71-1)Quality Control of 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), numerous studies have shown that this compound(SMILES: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), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

Reference:
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.Related Products of 28903-71-1.Li, Luqing; Li, Menghui; Liu, Ying; Cui, Qingqing; Bi, Keyi; Jin, Shanshan; Wang, Yujie; Ning, Jingming; Zhang, Zhengzhu published the article 《High-sensitivity hyperspectral coupled self-assembled nanoporphyrin sensor for monitoring black tea fermentation》 about this compound( cas:28903-71-1 ) in Sensors and Actuators, B: Chemical. Keywords: nanoporphyrin sensor black tea fermentation self assembly hyperspectral imaging. Let’s learn more about this compound (cas:28903-71-1).

The rapid and scientific method for monitoring the quality of black tea fermentation is of great significance to the quality control of black tea production This study proposed a novel method for evaluating the fermentation quality of black tea by using hyperspectral imaging technol. with self-assembled nanoporphyrin (N-TPP) dyes, which were used as aroma capture probes in the black tea fermentation process. SEM and UV-visible spectroscopy were performed to characterize the N-TPP. Then, the results of the colorimetric sensor array (conventional camera color method) and the proposed hyperspectral methods were compared. Finally, the hyperspectral information of N-TPP with higher sensitivity was collected, and the qual. models of evaluating black tea fermentation quality were established using support vector machine (SVM), extreme learning machine, and linear discriminant anal. Among these models, the SVM model exhibited the highest discriminant accuracy. The accuracy of the SVM model based on the hyperspectral information of the self-assembled N-TPP array was 98.85 %, which was considerably higher than that (68.97 %) of the SVM model based on the color information of the porphyrin array. The results revealed that the proposed method can effectively improve the monitoring accuracy of black tea fermentation quality.

Although many compounds look similar to this compound(28903-71-1)Related Products of 28903-71-1, numerous studies have shown that this compound(SMILES: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), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Sun, Rui-Min; Yao, You-Qiang; Wang, Ai-Jun; Fang, Ke-Ming; Zhang, Lu; Feng, Jiu-Ju researched the compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II)( cas:28903-71-1 ).Computed Properties of C48H38CoN4O4.They published the article 《One-step pyrolysis synthesis of nitrogen, manganese-codoped porous carbon encapsulated cobalt-iron nanoparticles with superior catalytic activity for oxygen reduction reaction》 about this compound( cas:28903-71-1 ) in Journal of Colloid and Interface Science. Keywords: nitrogen manganese carbon encapsulated cobalt iron nanoparticle reduction reaction; Cobalt-iron alloy; Doped porous carbon; Electrocatalyst; Oxygen reduction reaction; Pyrolysis synthesis; Synergistic catalysis. We’ll tell you more about this compound (cas:28903-71-1).

Replacing precious metal catalysts with low-price and abundant catalysts is one of urgent goals for green and sustainable energy development. It is imperative yet challenging to search low-cost, high-efficiency, and long-durability electrocatalysts for oxygen reduction reaction (ORR) in energy conversion devices. Herein, three-dimensional low-cost Co3Fe7 nanoparticles/nitrogen, manganese-codoped porous carbon (Co3Fe7/N, Mn-PC) was synthesized with the mixture of dicyandiamide, cobalt (II) tetramethoxyphenylporphyrin (Co(II)TMOPP), hemin, and manganese acetate by one-step pyrolysis and then acid etching. The resultant Co3Fe7/N, Mn-PC exhibited excellent durability and prominent ORR activity with more pos. onset potential (Eonset, 0.98 V) and half-wave potential (E1/2, 0.87 V) in 0.1 M KOH electrolyte, coupled with strong methanol resistance. The pyrolysis temperature and optimal balance of graphite with pyridine-nitrogen are of significance for the ORR performance. The prepared Co3Fe7/N, Mn-PC displayed excellent ORR performance over com. Pt/C in the identical environment. It was ascribed to the uniform 3D architecture, Mn- and N-doping effects by finely adjusting the electronic structures, coupled with the synergistic catalytic effects of multi-compositions and multi-active sites. This work provides some constructive guidelines for preparation of low-cost and high-efficiency ORR electrocatalysts.

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