Category: 138219-98-4

Fiore, Gina L.; Goguen, Brenda N.; Klinkenberg, Jessica L.; Payne, Sarah J.; Demas, J. N.; Fraser, Cassandra L. published an article in Inorganic Chemistry. The title of the article was 《Ruthenium Tris(bipyridine) Complexes with Sulfur Substituents: Model Studies for PEG Coupling》.Recommanded Product: 138219-98-4 The author mentioned the following in the article:

Ruthenium polypyridyl complexes are incorporated into polymers for sensing and light emitting materials applications. Coupling reactions between metal complexes and polymers are one route to polymeric metal complexes. In an effort to increase conjugation efficiency, tune materials properties, and introduce a responsive crosslink, ruthenium tris(bipyridine) derivatives with sulfur substituents were synthesized and compared to oxygen analogs. Difunctional thiols, thioesters, thioethers, and disulfides, as well as hexafunctional nonpolymeric model systems, were explored. Upon exposure to oxygen, the thiol derivative was readily oxidized. These studies guided Ru(bpy)3 PEG coupling reactions with disulfide and thioether linkages, which proceeded to ∼80% and ∼60% yield, resp. The luminescence properties of the Ru PEG derivatives and model systems were investigated. The emission spectra and lifetimes for all complexes in CH3CN under an inert atm. are comparable to [Ru(bpy)3]Cl2. Lifetime data for nonpolymeric analogs fit to a single exponential decay indicating heterogeneity, suggesting sample homogeneity, whereas data for polymers fit to a multiexponential decay. In contrast to certain [Ru(bpy)3]2+/thiol mixtures, no intramol. quenching by the sulfide is observed for [Ru(bpy)2{bpy(CH2SH)2}](PF6)2. Emission spectra red shift and multiexponential decay are noted for the oxidized Ru thiol product. The rates of oxygen quenching are slower for Ru PEG derivatives than those for nonpolymeric analogs, which may be attributed to shielding effects of the polymer chain. In the experiment, the researchers used 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Recommanded Product: 138219-98-4)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Recommanded Product: 138219-98-4 Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Application In Synthesis of 4,4′-Bis(chloromethyl)-2,2′-bipyridineOn May 3, 2010 ,《Surface Catalysis of Water Oxidation by the Blue Ruthenium Dimer》 appeared in Inorganic Chemistry. The author of the article were Jurss, Jonah W.; Concepcion, Javier C.; Norris, Michael R.; Templeton, Joseph L.; Meyer, Thomas J.. The article conveys some information:

Single-electron activation of multielectron catalysis is viable in catalytic H2O oxidation with stepwise proton-coupled electron transfer, leading to high-energy catalytic precursors. For the blue dimer, cis,cis-[(bpy)2(H2O)RuIIIORuIII(H2O)(bpy)2]4+, the 1st well-defined mol. catalyst for H2O oxidation, stepwise 4e-/4H+ oxidation occurs to give the reactive precursor [(O)RuVORuV(O)]4+. This key intermediate is kinetically inaccessible at an unmodified metal oxide surface, where the only available redox pathway is electron transfer. The authors report here a remarkable surface activation of In-Sn oxide (In2O3:Sn) electrodes toward catalytic H2O oxidation by the blue dimer at electrodes derivatized by surface phosphonate binding of [Ru(4,4′-((HO)2P(O)CH2)2bpy)2(bpy)]2+. Surface binding dramatically improves the rate of surface oxidation of the blue dimer and induces H2O oxidation catalysis. The experimental process involved the reaction of 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Application In Synthesis of 4,4′-Bis(chloromethyl)-2,2′-bipyridine)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals. Application In Synthesis of 4,4′-Bis(chloromethyl)-2,2′-bipyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Product Details of 138219-98-4On November 30, 2018 ,《Interfacial self-assembly of bipyridyl-functionalized nanoSiO2-BPy@Ln(β-diketone)n composites and their luminescent properties》 appeared in Journal of Luminescence. The author of the article were Ma, Yue-Yang; Huang, Hong-Xiang; Chen, Meng; Qian, Dong-Jin. The article conveys some information:

Interfacial self-assembly provides an effective route to design and construct various metal-organic hybrid and composite materials with interesting optical and electroactive properties. Here, we reported the interfacial self-assembly of luminescent nano-composites through the coordination reaction of lanthanide salts of Ln(CF3SO3)3 (Ln = Eu and Tb) with the 2,2′-bipyridyl (BPy)-functionalized silica nano-linkers (nanoSiO2-BPy) and several β-diketone ligands. The assembling processes and the nano-materials as-prepared were characterized by using thermogravimetry, IR, UV-vis absorption and XPS, as well as field emission transmission electron microscopy (FE-TEM). The luminescent properties from both nanoSiO2-BPy linkers and lanthanide nano-composites were investigated in the solutions and solid powders, which revealed not only the broad emissions of nanoSiO2-BPy linkers between 400 and 520 nm, but also the sharp emissions between 480 and 750 nm, designated to the 4f-4f electron transitions of 5D4 → 7Fn (n = 3,4,5,6) and 5D0 → 7Fn (n = 0,1,2,3,4) of the Tb3+ and Eu3+ ions, resp. The relative emission intensity of the Ln3+ ions in the nano-composites has been found to be closely dependent on the compositions of the nano-composites, structure of the β-diketone ligands, and the excited wavelengths. Finally, the energy transfer process in the nano-composites was discussed. In the part of experimental materials, we found many familiar compounds, such as 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Product Details of 138219-98-4)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals. Product Details of 138219-98-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dykeman, Ryan R.; Yan, Ning; Scopelliti, Rosario; Dyson, Paul J. published an article on February 7 ,2011. The article was titled 《Enhanced rate of arene hydrogenation with imidazolium functionalized bipyridine stabilized rhodium nanoparticle catalysts》, and you may find the article in Inorganic Chemistry.Application In Synthesis of 4,4′-Bis(chloromethyl)-2,2′-bipyridine The information in the text is summarized as follows:

The imidazolium functionalized bipyridine compounds, {4,4′-bis[7-(2,3-dimethylimidazolium)heptyl]-2,2′-bipyridine}2+ ([BIHB]2+) and {4,4′-bis[(1,2-dimethylimidazolium)methyl]-2,2′-bipyridine}2+ ([BIMB]2+), were prepared and used as Rh nanoparticle stabilizers. The dispersed Rh nanoparticles were used as catalysts in the biphasic hydrogenation of various arene substrates. The catalytic activity was strongly influenced by the stabilizer employed and followed the trend [BIHB]2+ > bipy > [BIMB]2+. The steric and electronic characteristics of the imidazolium functionalized bipyridine ligands were assessed via the synthesis of rhenium carbonyl complexes, which facilitated the rationalization of the catalytic properties of the nanoparticles. The results came from multiple reactions, including the reaction of 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Application In Synthesis of 4,4′-Bis(chloromethyl)-2,2′-bipyridine)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Application In Synthesis of 4,4′-Bis(chloromethyl)-2,2′-bipyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Oxidative electropolymerization of iron and ruthenium complexes containing aniline-substituted 2,2′-bipyridine ligands》 was written by Horwitz, Colin P.; Zuo, Qi. Formula: C12H10Cl2N2 And the article was included in Inorganic Chemistry on April 29 ,1992. The article conveys some information:

New bipyridine ligands with pendant aniline groups [4-CH2R-4′-CH2R’-2,2′-bipyridine, where R = NHPh and R’ = H (anilbpy) and R = R’ = NHPh (bis-anilbpy)] and the electrochem. properties of their Fe and Ru complexes, [Fe(anilbpy)3][PF6]2 (4), [Ru(bpy)2(anilbpy)][PF6]2 (5), and [Ru(bpy)2(bis-anilbpy)][PF6]2 (6) [where bpy = 4,4′-Me2-2,2′-bipyridine] are described. All complexes, except 5, form polymer films from an MeCN solution containing 0.1M Bu4NClO4 on Pt and glassy C electrodes; 1-4 are also polymerized onto NESA glass electrodes by repetitively cycling the electrode potential between 0 and 1.1 V or 0 and 1.5 V vs. SSCE. Two new redox couples arising from tail-to-tail and head-to-tail coupling of aniline groups on adjacent monomers are visible in the voltammograms during the film growth process carried out between 0 and 1.1 V. A broad, ill-defined redox couple for the tail-to-tail coupled aniline species is seen in polymer films grown at 1.5 V. The films exhibit voltammetric properties on all electrode materials expected for metal-centered oxidation and ligand-centered reductions when the coated electrodes are transferred to a MeCN solution containing only the supporting electrolyte. The visible spectra of the polymers on conductive glass electrodes show MLCT bands in the same region as the monomers with λmax ∼540 nm for poly-1 and poly-2 and λmax = 460 nm for poly-3 and poly-4. A new absorption band appears at λmax = 720 nm, assignable to a monocation of diphenylamine for films on the conductive glass oxidized to 0.9 V, and its intensity decreases with application of increasing pos. potentials, with a new band appearing at λmax ∼440 nm arising from the 2-electron oxidation products of diphenylamine and benzidine. The experimental part of the paper was very detailed, including the reaction process of 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Formula: C12H10Cl2N2)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Formula: C12H10Cl2N2The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Category: pyridine-derivativesOn October 20, 2003 ,《Coordination Properties of New Bis(1,4,7-triazacyclononane) Ligands: A Highly Active Dizinc Complex in Phosphate Diester Hydrolysis》 was published in Inorganic Chemistry. The article was written by Arca, Massimiliano; Bencini, Andrea; Berni, Emanuela; Caltagirone, Claudia; Devillanova, Francesco A.; Isaia, Francesco; Garau, Alessandra; Giorgi, Claudia; Lippolis, Vito; Perra, Alessandro; Tei, Lorenzo; Valtancoli, Barbara. The article contains the following contents:

The synthesis and characterization of three new bis([9]aneN3) ligands, containing resp. 2,2′-bipyridine (L1), 1,10-phenanthroline (L2), and quinoxaline (L3) moieties linking the two macrocyclic units, are reported. Proton binding and Cu(II), Zn(II), Cd(II), and Pb(II) coordination with L1-L3 were studied by potentiometric titrations and, for L1 and L2, by spectrophotometric UV-visible measurements in aqueous solutions All ligands can give stable mono- and dinuclear complexes. In the case of L1, trinuclear Cu(II) complexes are also formed. The stability constants and structural features of the formed complexes are strongly affected by the different architecture and binding properties of the spacers bridging the two [9]aneN3 units. In the case of the L1 and L2 mononuclear complexes, the metal is coordinated by the three donors of one [9]aneN3 moiety; in the [ML2]2+ complexes, however, the phenanthroline nitrogens are also involved in metal binding. Finally, in the [ML3]2+ complexes both macrocyclic units, at a short distance from each other, can be involved in metal coordination, giving rise to sandwich complexes. In the binuclear complexes each metal ion is generally coordinated by one [9]aneN3 unit. In L1, however, the dipyridine nitrogens can also act as a potential binding site for metals. The dinuclear complexes show a marked tendency to form mono-, di-, and, in some cases, trihydroxo species in aqueous solutions The resulting M-OH functions may behave as nucleophiles in hydrolytic reactions. The hydrolysis rate of bis(p-nitrophenyl)phosphate (BNPP) was measured in aqueous solution at 308.1 K in the presence of the L2 and L3 dinuclear Zn(II) complexes. Both the L2 complexes [Zn2L2(OH)2]2+ and [Zn2L2(OH)3]+ and the L3 complex [Zn2L3(OH)3]+ promote BNPP hydrolysis. The [Zn2L3(OH)3]+ complex is ∼2 orders of magnitude more active than the L2 complexes, due both to the short distance between the metal centers in [Zn2L3(OH)3]+, which could allow a bridging interaction of the phosphate ester, and to the simultaneous presence of single-metal bound nucleophilic Zn-OH functions. These structural features are substantially corroborated by semiempirical PM3 calculations carried out on the mono-, di-, and trihydroxo species of the L3 dizinc complex. In addition to this study using 4,4′-Bis(chloromethyl)-2,2′-bipyridine, there are many other studies that have used 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Category: pyridine-derivatives) was used in this study.

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals. Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Chatterjee, Tanmay; Sarma, Monima; Das, Samar K. published their research in Tetrahedron Letters on December 29 ,2010. The article was titled 《Donor-acceptor amphiphilic 2,2′-bipyridine chromophores: synthesis, linear optical, and thermal properties》.Related Products of 138219-98-4 The article contains the following contents:

Two sym. and one unsym. push-pull amphiphilic 2,2′-bipyridine chromophores were synthesized through Horner-Wadsworth-Emmons and Knoevenagel reaction mechanized synthetic protocols and characterized by spectroscopy. The linear optical properties and thermal stability of the synthesized chromophores were studied. In the experiment, the researchers used 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Related Products of 138219-98-4)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals. Related Products of 138219-98-4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dumur, Frederic; Guerlin, Audrey; Lehoux, Anais; Selvakannan, P. R.; Miomandre, Fabien; Meallet-Renault, Rachel; Rebarz, Mateusz; Sliwa, Michel; Dumas, Eddy; Le Pleux, Loic; Pellegrin, Yann; Odobel, Fabrice; Mayer, Cedric R. published an article in Applied Surface Science. The title of the article was 《Mutual influence of gold and silver nanoparticles on Tris-(2,2’bipyridine)-Ru(II) core complexes: Post-functionalization processes, optical and electrochemical investigations》.Related Products of 138219-98-4 The author mentioned the following in the article:

The synthesis, reactivity and properties of a series of four polypyridyl ruthenium complexes have been studied. These complexes were used to post-functionalize preformed 3 nm silver and gold nanoparticles (NPs) in water and in dichloromethane (DCM). We studied the influence of the grafted complexes on the formation process and stability of the colloidal solutions and we investigated the optical and electrochem. properties of the final nanocomposites. Among the series of four ruthenium complexes, three novel heteroleptic complexes (1-3) bearing one pyridine, one amine or two carboxydithioic acid pendant groups were synthesized and reacted with preformed Au-NPs and Ag-NPs. Results were compared to those obtained with the model [Ru(bpy)3]2+ complex (4). The strength of the interaction between the anchoring group and the surface of NPs influenced the size, shape and stability of the final nanocomposites. Polar solvent such as water induced aggregation and lead to unstable nanocomposites. Stationary and time resolved luminescence of grafted nanocomposites (1-3) showed that the luminescence of complexes were completely quenched (lifetime and emission quantum yield) in water by electron transfer processes, moreover elec. measurements rationalize that Ag nanocomposites exhibit the stronger quenching due to a lower oxidation potential. It also showed a current enhancement associated with double layer charging of the metal nanoparticle cores. The results came from multiple reactions, including the reaction of 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Related Products of 138219-98-4)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Related Products of 138219-98-4The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Putans, Becca A.; Bishop, Lee M.; Hamers, Robert J. published an article in Chemistry of Materials. The title of the article was 《Versatile Approach to Formation of Light-Harvesting Complexes on Nanostructured Metal Oxide Surfaces via “”On-Surface”” Assembly》.Electric Literature of C12H10Cl2N2 The author mentioned the following in the article:

A versatile, two-step “”on-surface”” assembly method is demonstrated to build heteroleptic light-harvesting complexes on nanostructured metal oxide surfaces. In this process, building-block ligands were first attached to SnO2 surfaces by grafting 2,2′-bipyridine mols. that were modified at the (4,4′) positions with surface-reactive binding groups. The surface-bound bipyridine ligands then served as a basis for “”on-surface”” assembly of complete surface-bound Ru(bpy)3 complexes by immersing the bipyridyl-modified samples in a solution containing the complex [Ru(bpy)2(CH3CN)2](PF6)2 and illuminating with UV light, which removes the photolabile acetonitrile ligands and allows the solution-phase complex to react with the surface-bound bipyridine mols. to form complete surface-bound Ru(bpy)3 complexes. We demonstrate that this process is effective using three different surface attachment schemes based on aryl-iodo, benzyl-iodo, and dithione bipyridine derivatives The stability of the complexes in water and the charge transfer characteristics were then measured for the different ligand attachment methods. The benzyl-iodo complex provides the best surface coverage and greatest stability. We also demonstrated that the building-block ligand can act as a site for regeneration of the complexes on the surface. The experimental process involved the reaction of 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Electric Literature of C12H10Cl2N2)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Electric Literature of C12H10Cl2N2The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Unravelling the structural-electronic impact of arylamine electron-donating antennas on the performances of efficient ruthenium sensitizers for dye-sensitized solar cells》 was written by Chen, Wang-Chao; Kong, Fan-Tai; Ghadari, Rahim; Li, Zhao-Qian; Guo, Fu-Ling; Liu, Xue-Peng; Huang, Yang; Yu, Ting; Hayat, Tasawar; Dai, Song-Yuan. Recommanded Product: 138219-98-4 And the article was included in Journal of Power Sources on April 1 ,2017. The article conveys some information:

We report a systematic research to understand the structural-electronic impact of the arylamine electron-donating antennas on the performances of the ruthenium complexes for dye-sensitized solar cells. Three ruthenium complexes functionalized with different arylamine electron-donating antennas (N,N-diethyl-aniline in RC-31, julolidine in RC-32 and N,N-dibenzyl-aniline in RC-36) are designed and synthesized. The photoelec. properties of RC dyes exhibit apparent discrepancy, which are ascribed to different structural nature and electronic delocalization ability of these arylamine electron-donating system. In conjunction with TiO2 microspheres photoanode and a typical coadsorbent DPA, the devices sensitized by RC-36 achieve the best conversion efficiency of 10.23%. The UV-Vis absorption, electrochem. measurement, incident photon-to-current conversion efficiency and transient absorption spectra confirm that the excellent performance of RC-36 is induced by synergistically structural-electronic impacts from enhanced absorption capacity and well-tuned electronic characteristics. These observations provide valuable insights into the mol. engineering methodol. based on fine tuning structural-electronic impact of electron-donating antenna in efficient ruthenium sensitizers. The experimental part of the paper was very detailed, including the reaction process of 4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4Recommanded Product: 138219-98-4)

4,4′-Bis(chloromethyl)-2,2′-bipyridine(cas: 138219-98-4) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. Recommanded Product: 138219-98-4 Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem