Category: 1802-30-8

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1802-30-8, molcular formula is C12H8N2O4, introducing its new discovery. HPLC of Formula: C12H8N2O4

Using p-phenylenediamine as a precursor, p-carbon dots (p-CDs) with strong red-light emission were encapsulated into a metal-organic framework (MOF) followed by introduction of green light-emitting Tb3+ to form a two-color light-emitting hybrid (Tb3+@p-CDs/MOF). The as-prepared fluorescent-functionalized MOF not only maintained the excellent optical properties of p-CDs and Tb3+ to give strong emission, but also had good chemical and physical properties. The chosen p-CDs were aggregated readily in water, which led to only very weak photoluminescence, whereas the opposite effect was noted in the organic solvents ethanol, dimethylformamide and cyclopropane. Therefore, the as-prepared hybrid showed different color light emission in water or organic solvents, and acted as a ratiometric and colorimetric fluorescent probe to detect water content in organic solvents. Moreover, this hybrid also served as a ratiometric luminescent sensor for detection of relative humidity (RH): the ratio of light intensity at 545 nm to that at 605 nm increased linearly with increasing RH from 33.0% to 85.1% in the atmosphere.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 1802-30-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, molecular formula is C12H8N2O4. In a Article，once mentioned of 1802-30-8

A metal-organic framework with open 2,2?-bipyridine sites can efficiently activate molecular oxygen for selective oxidation of a variety of saturated hydrocarbons with unprecedented activities and selectivities.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is traditionally divided into organic and inorganic chemistry. SDS of cas: 1802-30-8. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1802-30-8

The platinum diimine dithiolate complex, [Pt(2,2?-bipyridyl-5,5?-dicarboxylicacid)(3,4-toluenedithiolate)] ([Pt(5,5?-dcbpy)(tdt)]) and its tetrabutylammonium salt [TBA]2[Pt(5,5?-dcbpy)(tdt)] have been prepared, spectroscopically and electrochemically characterised and attached on to TiO2 substrate to be used as solar cell sensitisers. A single-crystal X-ray structure was obtained for [TBA]2[Pt(5,5?-dcbpy)(tdt)]·EtOH·EtOAc. The effect of the position of the two carboxylic acid substituents on the electrochemistry of the 5,5?-disubstituted complexes is discussed in comparison with the previously reported [Pt(4,4?-dcbpy)(tdt)]. Electrochemical studies show no major change in the HOMO after movement of the carboxylic acid groups, consistent with assignment of the HOMO as largely dithiolate based. Movement of the carboxylic acid groups makes the diimine electronic character and hence the LUMO of the complexes different. Electrochemical studies show a change to lower energy of the LUMO represented by changes in reduction potential of the compound on moving the carboxylic acid substituents from the 4,4? to the 5,5? positions. Both [Pt(5,5?-dcbpy)(tdt)] and [TBA]2[Pt(5,5?-dcbpy)(tdt)] have been used as solar cell sensitisers, with the di-TBA salt giving lower dye loading but superior photovoltaic performance. The consequences of tuning the complex through the position of the carboxylic acid groups are discussed.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Product Details of 1802-30-8, Which mentioned a new discovery about 1802-30-8

A series of 5,5?-disubstituted 2,2?-bipyridines and their corresponding tris complexes with ruthenium(II) have been synthesized. The substituents used (ketone, ester, nitrile, imide, and two amides) are all electron withdrawing in nature and, with one exception, contain a carbonyl group in the position alpha to the bipyridine ring. The reduction potentials of the free ligands and ruthenium complexes have been determined by cyclic voltammetry and are correlated with the Hammett rho constants of the substituents. Finally, the electron- withdrawing nature of these substituents shifts the reduction potentials of each complex sufficiently positive that up to six stable ligand-based reductions are observable. In these reduced oxidation states, all of the complexes display multicolor electrochromism.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is an experimental science, Recommanded Product: 1802-30-8, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid

Electrochemical and Spectral investigations of Ring-Substituted Bipyridine Complexes of Ruthenium

A spectroelectrochemical study of a series of Ru complexes has been carried out by using an optically transparent thin-layer electrode (OTTLE).The visible spectra of the reduced complexes Ru(Bp5COOEt)3n (Bp5COOEt = 5,5′-bis(ethoxycarbonyl)-2,2′-bipyridine) and Ru(bpy)3n (bpy = bipyridine) appear to resemble the spectra of the corresponding ligand radical anion whereas the spectrum of Ru(Bp4COOEt)3n (Bp4COOEt = 4,4′-bis(ethoxycarbonyl)-2,2′-bipyridine) does not.In the near-IR two types of spectral behavior are observed once the complexes are reduced beyong the 2+ oxidation state: Type A complexes (e.g., Ru(bpy)3, Ru(Bp4Me)3 (Bp4Me = 4,4′-dimethyl-2,2′-bipyridine)) exhibit low-intensity (epsilon < 2500) bands which are similar to the spectra of the reduced free ligand.Type B complexes (e.g., Ru(Bp4COOEt)3n, Ru(Bp4CONEt)3n (Bp4CONEt = 4,4'-bis(diethylcarbamyl)-2,2'-bipyridine)) exhibit broad bands of greater intensity (1000 < epsilon < 15000).Possible origins for type B behavior are discussed.Examination of electrochemical results reveals an almost perfect linear correlation when ligand reduction potentials are plotted against the 2+/1+ couple of the corresponding ruthenium complex (correlation coefficient = 0.9993).The thermodynamic applications of this observation are considered.Both the spectral and electrochemical data support a model of the reduced metal complex having electrons localized in ligand orbitals. Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Recommanded Product: 1802-30-8, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1802-30-8, in my other articles.

Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Quality Control of: 2,2′-Bipyridine-5,5′-dicarboxylic acid, Which mentioned a new discovery about 1802-30-8

Design, Synthesis and Self-Assembly of Functional Amphiphilic Metallodendrimers

A new family of alkynylated, amphiphilic dendrimers consisting of amidoamine linkers connected to 5,5?-functionalized 2,2?-bipyridine cores has been developed and evaluated in the formation of metallodendrimers of different generations and in self-assembly protocols. A convergent synthetic strategy was applied to provide dumbbell-shaped amphiphilic dendrimers, where the 2,2?-bipyridine cores could be coordinated to FeII centers to afford corresponding metallodendrimers. The ability of the metallic- and non-metallic dendritic structures to self-assemble into functional supramolecular aggregates were furthermore evaluated in aqueous solution. Spherical aggregates with sizes of a few hundred nanometers were generally produced, where controlled disassembly of the metallodendrimers through decomplexation could be achieved.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 1802-30-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, molecular formula is C12H8N2O4. In a Article£¬once mentioned of 1802-30-8

Bipyridinedicarbonitrile complexes of molybdenum and tungsten

The preparation of cis- (biL denotes 2,2′-bipyridine-x,x’-dicarbonitrile, x,x’=4,5) is reported.Reaction of these complexes with produces .The synthesis of (biL, x,x’=5) is also reported.The ligands and complexes have characterised by spectroscopy (IR, electronic absorption, NMR) and microanalysis.The synthesis of biL is significantly assited by ultrasonication.

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Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 1802-30-8, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, molecular formula is C12H8N2O4. In a Article£¬once mentioned of 1802-30-8

Anion-templated assembly of three indium-organic frameworks with diverse topologies

[In(bpydc)(NO3)(DMA)0.5]¡¤(DMA)(H2O)4.5 (JLU-Liu8), [In(bpydc)(HCOO)H2O]¡¤(DMF)2(H2O)3 (JLU-Liu9) and [In(bpydc)Cl]¡¤(DMF)2(H2O)3 (JLU-Liu10), three novel 3D monoatomic indium-organic frameworks, have been synthesized from the 2,2?-bipyridine-5,5?-dicarboxylic acid (H2bpydc) ligand under solvothermal conditions. These three compounds are constructed from the same ligand, but templated using three different anions (NO3-, HCOO- and Cl-), and they exhibit three different 4-connected ung, crb and cbo network topologies. JLU-Liu8 exhibits two types of single-helical chains with opposite helical directions (left-handed and right-handed), all of the left-handed and right-handed helical chains alternate together. In the structure of JLU-Liu9, there are two types of metal-ligand channels: the smaller square channels with dimensions 3.45 A ¡Á 4.03 A and the bigger square channels with dimensions of 11.5 A ¡Á 11.5 A. JLU-Liu10 displays an interesting feature of double-helical chains: both helical chains are interconnected with each other by sharing indium ions which entangle one spiral shaft. Furthermore, the role of anions in assisting the formation of distinct structures has been discussed. These three compounds display strong luminescence in the solid state at room temperature.

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Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 1802-30-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, molecular formula is C12H8N2O4. In a Article£¬once mentioned of 1802-30-8

Remote control of bipyridine-metal coordination within a peptide dendrimer

The metal coordinating ability of a bipyridine ligand at the core of a peptide dendrimer was found to be controlled by the nature of amino acids placed at the dendrimer periphery, with coordination being promoted by anionic residues and inhibited by cationic residues; heterotrimers with mixed charges were preferentially formed.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Synthetic Route of 1802-30-8, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1802-30-8, in my other articles.

Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of: 2,2′-Bipyridine-5,5′-dicarboxylic acid. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 1802-30-8

New water-soluble diamine complexes as catalysts for the hydrogenation of ketones under hydrogen pressure

New water-soluble rhodium and iridium complexes of 2,2′-bipyridines, functionalized with PO3Na2 groups, show very good catalytic activities in the reduction of various substituted acetophenones under hydrogen pressure in basic aqueous media. No significant loss of catalyst activity is observed after one use.

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Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI