Tag: 300-400

Li, Dong; Lv, Na; Yu, Jiankang; Qiao, Yu; Xue, Xiangxin; Li, Hongji; Che, Guangbo published an article in Journal of Molecular Structure. The title of the article was 《Synthesis, crystal structure and highly sensitive detection property of a fluorescent copper coordination polymer》.Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine The author mentioned the following in the article:

A new luminescent metal-organic framework [Cu(Hbcb)(PYTPY)] (1) (H3bcb = 3,5-bis((5′-carboxylbenzyl)oxy)benzoic acid, PYTPY = 4′-(4-pyridyl)-2,2′:6′,2”-terpyridine) was successfully synthesized and structurally characterized by elemental anal., IR and single crystal x-ray diffraction. Anal. revealed that an infinite one-dimensional ladder chain was created by offset face-to-face π-π stacking interactions between H3bcb and PYTPY. And it exhibits a three-dimensional supramol. structure through the π-π stacking interactions between chains. The thermal stabilities and gas adsorption properties of complex 1 was studied. Complex 1 has good thermal stabilities and selective adsorption properties for CO2. The solid-state luminescent properties of MOFs were measured carefully by UV irradiation at room temperature Most noteworthy, complex 1 exhibits a high sensitivity for Fe3+ and nitrobenzene in ethanol solution with mixed metal ions and aromatic compounds, which makes it be a promising crystalline material as luminescent probe to Fe3+ and nitrobenzene. Importantly, complex 1 can keep its original framework and be reused in sensing experiments The sensing mechanism also was studied. In addition to this study using 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine, there are many other studies that have used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine) was used in this study.

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2021,Materials Chemistry Frontiers included an article by Luo, Dong; Zuo, Tao; Zheng, Ji; Long, Zi-Hao; Wang, Xue-Zhi; Huang, Yong-Liang; Zhou, Xiao-Ping; Li, Dan. Name: 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine. The article was titled 《Enabling photocatalytic activity of [Ru(2,2′:6′,2′′-terpyridine)2]2+ integrated into a metal-organic framework》. The information in the text is summarized as follows:

As a creation platform for multifunctional materials, crystalline metal-organic frameworks (MOFs) can integrate different chromophores through reticular chem. to adjust their spatial arrangement and intermol. interaction, in turn achieving the purpose of improving the nature of optoelectronic properties. Herein, a stepwise reticular synthesis approach is successfully used to construct a multicomponent MOF, in which the well-known bis-terpyridyl ruthenium chromophore is orderly arranged into the skeleton of the material. Remarkably, this method promotes the excited state lifetime of the bis-terpyridyl ruthenium core, by two orders of magnitude (from 0.39 to 22.09 ns), to the extent that it can produce singlet oxygen under visible light irradiation at room temperature Meanwhile, the obtained multicomponent MOF has been established to have considerable porosity for exposure of substrates to the catalytic sites, rendering it suitable for heterogeneous photocatalysis, including as a photooxidation detoxifier for sulfur mustard simulant. Moreover, DFT and TDDFT calculations reveal that the synergistic charge transfer among different components in the MOF may play a crucial role in improving the excited state properties of the bis-terpyridyl ruthenium motif. After reading the article, we found that the author used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Name: 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Name: 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of C20H14N4On May 31, 2020, Chen, Hong-Shuo; Guo, Rui-Yun; Zhang, Qi-Ming; Liu, Yang-Sheng published an article in Monatshefte fuer Chemie. The article was 《Tunable solid-state photochromism based on proton and anion-controlled structural transformation of pyridinium-based organic small molecules》. The article mentions the following:

An organic mol. system with proton and anion-tunable photochromism properties based on a pyridinium derivative was developed. Through controlling the pH value and anion nature of the self-assembled systems, the novel three compounds displayed different photochromism behaviors. This work reveals that the introduction of addnl. groups into the mol. increases the diversity of the property of such complexes. In the experiment, the researchers used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Synthetic Route of C20H14N4)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Synthetic Route of C20H14N4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Surface-Enhanced Counter Electrode Materials for the Fabrication of Ultradurable Electrochromic Devices》 was written by Ahmad, Rana; DiPalo, Vittoria-Ann; Bell, Mackenzie; Ebralidze, Iraklii I.; Zenkina, Olena V.; Easton, E. Bradley. Quality Control of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine And the article was included in ACS Applied Energy Materials on April 25 ,2022. The article conveys some information:

Electrochromic devices (ECDs) and especially electrochromic supercapacitors, where the real-time state of charge is indicated by the color, have a wide range of applications. However, to meet modern challenges, these devices should demonstrate exceptional charge-discharge durability. In this work, we demonstrate that electrochem. cycling stability of ECDs based on a monolayer of 4′-(4-pyridyl)-2,2′:6′,2′′-terpyridine-iron(II) complex that was covalently linked to the working electrode (WE) can be drastically enhanced by a proper design of the counter electrode (CE). Enhancing the surface area of the flat indium tin oxide (ITO) CE by a layer of screen-printed ITO nanoparticles results in an ECD that upon continuous spectro-electrochem. switching for 600 cycles demonstrates negligible deterioration of the change in optical d. The enhanced surface area of the CE significantly diminishes the electrode and gel electrolyte degradation and allows us to gain fundamental insight into the pathway of degradation of the electrochromic mols. at the WE. During prolonged cycling (20,000 and 50,000 cycles), the overall total resistance of ECDs remains fairly unchanged, while the capacitance decreases due to a loss of the pseudocapacitive component associated with electrochromic mols. XPS suggests that this loss is likely due to the cleavage of the linkage C-N+ bond followed by the dissolution of the entire metal complex mol. into the electrolyte. In the experiment, the researchers used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Quality Control of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Quality Control of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridineThe 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

Liu, Zhida; Ning, Liangmin; Wang, Kaiyuan; Feng, Lixi; Gu, Wen; Liu, Xin published their research in Journal of Molecular Structure on December 5 ,2020. The article was titled 《A new imidazole-functionalized 3D-cobalt metal-organic framework as a high efficiency heterogeneous catalyst for Knoevenagel condensation reaction of furfural》.Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine The article contains the following contents:

A new 3D Co(II) based metal-organic framework [Co(pytpy)(AIP)·H2O]n (I) (C2/c)(pytpy = 4′-(4-pyridyl)-4,2′:6′,4″”-terpyridine, AIP = 5-aminoisophthalic acid) by solvothermal method was synthesized. Its crystal structure was determined with single-crystal X-ray diffraction (SC-XRD) techniques. And then Imidazole groups were introduced into I by Schiff base post-synthetic reaction to make a Lewis base sites rich MOF-based catalyst. The post-synthetic MOF-based catalyst showed an excellent performance in Knoevenagel Condensation Reaction of furfural. Moreover, the catalytic performance for others homologues of furfural RCHO [R = [5-(hydroxymethyl)furan-2-yl], 4-fluorophenyl, Pr, etc.] and malononitrile was also tested. In the experiment, the researchers used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Khavasi, Hamid Reza; Esmaeili, Maryam published their research in Crystal Growth & Design on August 7 ,2019. The article was titled 《Case Study of the Correlation between Metallogelation Ability and Crystal Packing》.HPLC of Formula: 112881-51-3 The article contains the following contents:

In the present paper, in order to find the correlation between the mol. structure and the intermol. interaction patterns in the crystalline state and the corresponding gelating or nongelating behavior, two structurally related sets of copper complexes, including (CuCl2[L2pyTerpy]), 1, (CuCl2[L3pyTerpy]), 2, and (CuCl2[L4pyTerpy]), 3, (where LnpyTerpy is 4′-(n-pyridyl)-2,2′,6′,2”-terpyridine) as the first set and (CuCl2[L2pydipyz-py]), 4, (CuCl2[L3pydipyz-py]), 5, and (CuCl2[L4pydipyz-py]), 6, (where Lnpydipyz-py is 4-(n-pyridyl)-2,6-dipyrazin-2-yl-pyridine) as the second one, have been synthesized, and their crystal packing as well as gelating properties have been investigated. Results show that although these two sets are structurally similar the first set forms a metastable hydrogel, while the second one is unable to form a gel. To investigate the reasons, we employed Hirshfeld surface anal. and examined the differences in their packing arrangements, which suggest hydrogen bonding arranged into the three-dimensional network is a preferred mode of packing for the crystalline solid but is unfavorable for gel formation. In the part of experimental materials, we found many familiar compounds, such as 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3HPLC of Formula: 112881-51-3)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. HPLC of Formula: 112881-51-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Xiaobo; Ma, Yongpeng; Li, Zhenxing; Han, Guanglu; Guan, Xidong; Fan, Kaiqi published an article in Journal of Applied Spectroscopy. The title of the article was 《Colorimetric Detection of Fe(II) and Co(II) by Using Terpyridine-Based Derivative》.Related Products of 112881-51-3 The author mentioned the following in the article:

A multi-ion chromogenic sensor based on a terpyridine moiety was developed for the semiquant., visual, and sensitive speciation anal. of Fe2+ and Co2+ ions in water. Each metal ion exhibited a different color, and significant color evolution was observed by the naked eye, resulting in semiquant. visual detection. A smartphone was used for visual detection by identifying the RGB values of the probe solutions The application of smartphones shortened the detection time dramatically and reduced the detection cost. This method provides a new strategy for the semiquant. detection of heavy metal ions in water samples. In the experiment, the researchers used many compounds, for example, 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Related Products of 112881-51-3)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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 112881-51-3 Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Tripathi, Suparna; Hossain, Anowar; Seth, Saikat Kumar; Mukhopadhyay, Subrata published an article on February 15 ,2021. The article was titled 《Supramolecular association and quantification of intermolecular interactions of 4′-functionalized 2,2′:6′,2”-terpyridines: Experimental observation and theoretical studies》, and you may find the article in Journal of Molecular Structure.Synthetic Route of C20H14N4 The information in the text is summarized as follows:

Three versatile 4′-substituted 2,2′:6′,2”-terpyridine compounds (1-3) having different substitutions (4-ethoxyphenyl, 4-methoxyphenyl and pyridyl) at 4′-position of the central pyridine ring have been synthesized and structurally characterized. Three representative crystal structures have been determined through single crystal X-ray diffraction anal. X-ray crystallog. revels that the structures are stabilized through C-H···π and π-π stacking interactions. In the solid-state, the supramol. assemblies of the title compounds have been explored in detail. Compounds (1) and (3) exhibits both C-H···π and π-π interactions in building supramol. assemblies whereas compound (2) exhibit π-π interaction only. All the intermol. interactions that are involved within the structures are quantified through Hirshfeld surface analyses. The weak noncovalent interactions that played significant role in building supramol. assemblies are further characterized by Bader’s theory of ‘atoms-in-mols.’ (AIM). Finally, the supramol. networks are characterized by theor. ‘Noncovalent Interaction’ (NCI) plot index. The supramol. solid-state frameworks of three 4′-functionalized 2,2′:6′,2”-terpyridine derivatives have been quantified which are further characterized theor. by the Bader’s theory of ‘atoms-in-mols.'(AIM) and ‘noncovalent interaction’ (NCI) plot index. In the part of experimental materials, we found many familiar compounds, such as 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Synthetic Route of C20H14N4)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Synthetic Route of C20H14N4 Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridineOn October 1, 2020 ,《Unveiling Anomalous Surface-Enhanced Resonance Raman Scattering on an Oxo-Triruthenium Acetate Cluster Complex by a Theoretical-Experimental Approach》 was published in Journal of Physical Chemistry C. The article was written by Santos, Jonnatan J.; Toma, Sergio H.; Ando, Romulo A.; Corio, Paola; Araki, Koiti. The article contains the following contents:

Surface-enhanced Raman spectroscopy (SERS) has been explored by the most diverse areas of research over the past 40 years, with more special attention from anal. chem. Although there is a great consensus that there are two mechanisms that contribute most to the observation of the phenomenon (electromagnetic (EM) and charge transfer (CT)), several anomalies are observed, especially when studying complexes of transition metals. In this article, we present a theor. and exptl. study of Raman and SERS of an oxo-triruthenium acetate cluster ([Ru3O (CH3COO)6(py)2(pytpy)]), where it was possible to observe one of these “”anomalies”” of the SERS effect, in this case, an unexpected enhancement of the vibrational stretching mode of the oxo group. This cluster had its electrochem. and spectroelectrochem. properties studied by cyclic voltammetry and electronic spectroscopy in the visible and near-IR, where it was possible to observe the fully reversible waves of the ruthenium sites (separated by 1.00 V) and the terpyridinic ligand and how the absorption of this complex varies drastically when reduced electrochem. The MOs and electronic transitions of this cluster were calculated by time-dependent d.-functional theory (TDDFT), where it can be noted that the HOMO orbitals are almost exclusively composed of the AOs of ruthenium and the LUMO orbitals can be composed of a mixture of ruthenium orbitals and acetate ligands, as well as terpyridine. From the TDDFT calculations and the transitions energies obtained, the complex resonant Raman and Raman spectra were simulated using different excitation wavelengths (696, 785, and 1064 nm), where an unexpected intensification of oxygen stretching at the Ru3O center at 700 cm-1 was observed considering the excitation at 785 nm, even though there was no expected transition. The exptl. SERS spectra of the complex in two redox states (Ru3III, III, III and Ru3III, III, II) were obtained exptl. using gold and silver nanoparticles with an excitation wavelength laser at 785 nm, where a very intense signal at 700 cm-1, for the Ru3III, III, II redox state, was observed The simulation of electronic states by TDDFT and SERS spectra by DFT, considering an Au20 cluster adduct, showed an intensification of the entire complex, with great emphasis on the Ru3O center and the 700 cm-1 mode that, however, was not as intense as the results obtained exptl., indicating an anomalous intensification. In the experiment, the researchers used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Reference of 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine Pyridine has a conjugated system of six π electrons that are delocalized over the ring.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kumar, Mopidevi Manikanta; Raj, C. Retna published an article on February 22 ,2019. The article was titled 《Carbothermal-Reduction-Assisted Phosphidation of Cobalt Affords Mesoporous Nitrogen-Doped Carbon-Embedded CoP Nanoelectrocatalysts for the Oxygen Reduction Reaction》, and you may find the article in ACS Applied Nano Materials.Computed Properties of C20H14N4 The information in the text is summarized as follows:

We demonstrate a new facile single-step synthesis of mesoporous nitrogen-doped carbon-embedded cobalt phosphide (NC-CoP) nanoparticles using a single-source precursor of the cobalt(II) bis(terpyridine)-based complex ([Co(pyterpy)2](PF6)2) by carbothermal reduction Phosphidation of cobalt is achieved with the hexafluorophosphate counteranion of the precursor complex for the first time. Polypyridyl complexes such as [Co(bpy)3](PF6)2 and [Co(terpy)2](PF6)2 do not yield the desired CoP. The at. percent of carbon in the precursor complex controls the growth of CoP. The as-synthesized NC-CoP has a large surface area of 120 m2/g and shows excellent electrocatalytic activity toward the oxygen reduction reaction (ORR). It is highly durable and favors the four-electron pathway for the reduction of oxygen to water at low overpotential. The synergistic effect between NC and CoP facilitates the electron-transfer kinetics for ORR. In addition to this study using 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine, there are many other studies that have used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Computed Properties of C20H14N4) was used in this study.

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Computed Properties of C20H14N4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem