Tag: 100-200

On September 1, 2009, Yang, Limin; Zhao, Guozhong; Li, Weihong; Liu, Yufeng; Shi, Xiaoxi; Jia, Xinfeng; Zhao, Kui; Lu, Xiangyang; Xu, Yizhuang; Xie, Datao; Wu, Jinguang; Chen, Jia’er published an article.Safety of Pyridine-3-sulfonic acid The title of the article was Low-frequency vibrational modes of DL-homocysteic acid and related compounds. And the article contained the following:

Several polycrystalline mols. with sulfonate groups and some of their metal complexes, including DL-homocysteic acid (DLH) and its Sr- and Cu-complexes, pyridine-3-sulfonic acid and its Co- and Ni-complexes, sulfanilic acid and -cysteic acid were studied using THz time-domain methods at room temperature The results of THz absorption spectra show that the mols. have characteristic bands at 0.2-2.7 THz (6-90 cm-1). THz technique can be used to distinguish different mols. with sulfonate groups and to determine the bonding of metal ions and the changes of H bond networks. In the THz region DLH has three bands: 1.61, 1.93 and 2.02 THz; and 0.85, 1.23 and 1.73 THz for Sr-DLH complex, 1.94 THz for Cu-DLH complex, resp. The absorption bands of pyridine-3-sulfonic acid are located at 0.81, 1.66 and 2.34 THz; the bands at 0.96, 1.70 and 2.38 THz for its Co-complex, 0.76, 1.26 and 1.87 THz for its Ni-complex. Sulfanilic acid has three bands: 0.97, 1.46 and 2.05 THz; and the absorption bands of -cysteic acid are at 0.82, 1.62, 1.87 and 2.07 THz, resp. The THz absorption spectra after complexation are different from the ligands, which indicate the bonding of metal ions and the changes of H bond networks. M-O and other vibrations appear in the FIR region for those metal-ligand complexes. The bands in the THz region were assigned to the rocking, torsion, rotation, wagging and other modes of different groups in the mols. Preliminary assignments of the bands were carried out using Gaussian program calculation The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Safety of Pyridine-3-sulfonic acid

The Article related to frequency vibrational mode homocysteic compound, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Vibrational and Rotational Spectroscopy and other aspects.Safety of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dou, Chuandong; Long, Xiaojing; Ding, Zicheng; Xie, Zhiyuan; Liu, Jun; Wang, Lixiang published an article in 2016, the title of the article was An Electron-Deficient Building Block Based on the B<-N Unit: An Electron Acceptor for All-Polymer Solar Cells.Name: [2,2′-Bipyridine]-3,3′-diamine And the article contains the following content:

A double B<-N bridged bipyridyl (BNBP) is a novel electron-deficient building block for polymer electron acceptors in all-polymer solar cells. The B<-N bridging units endow BNBP with fixed planar configuration and low-lying LUMO/HOMO energy levels. As a result, the polymer based on BNBP units (P-BNBP-T) exhibits high electron mobility, low-lying LUMO/HOMO energy levels, and strong absorbance in the visible region, which is desirable for polymer electron acceptors. Preliminary all-polymer solar cell (all-PSC) devices with P-BNBP-T as the electron acceptor and PTB7 as the electron donor exhibit a power conversion efficiency (PCE) of 3.38 %, which is among the highest values of all-PSCs with PTB7 as the electron donor. The experimental process involved the reaction of [2,2'-Bipyridine]-3,3'-diamine(cas: 75449-26-2).Name: [2,2′-Bipyridine]-3,3′-diamine

The Article related to polymer solar cell electron acceptor boron nitrogen, b-n coordination, boron, electron acceptor, polymers, solar cells, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Name: [2,2′-Bipyridine]-3,3′-diamine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On February 4, 2005, Yamada, Masanori; Honma, Itaru published an article.Formula: C5H5NO3S The title of the article was Proton conductivity of zwitterionic-type molecular solids under intermediate temperature and anhydrous conditions. And the article contained the following:

Anhydrous proton conducting material for polymer electrolyte membrane fuel cell (PEFC) was prepared by the mixing of zwitterionic-type mol. solid 3-pyridinesulfonic acid (PS) and organic acid methylenediphosphonic acid (MP). As a result, PS mol., which has a sulfonic acid and a pyridine group in its structure, showed the proton conductivity of 4 × 10-5 S cm-1 at 160°C under anhydrous condition. Surprisingly, by the mixing of MP to PS material, the PS-MP composite material exhibited a conductivity of 2 × 10-3 S cm-1. Also, the conductivity of PS-MP composite material did not decrease under the heating at 160° for 50 h. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Formula: C5H5NO3S

The Article related to proton conductivity sulfonic phosphonic zwitterionic solid electrolyte fuel cell, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Formula: C5H5NO3S

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On January 6, 2020, Liu, Shan-Shan; Han, Zhen; Yang, Jin-Sen; Huang, Sheng-Zheng; Dong, Xi-Yan; Zang, Shuang-Quan published an article.Electric Literature of 636-73-7 The title of the article was Sulfonic Groups Lined along Channels of Metal-Organic Frameworks (MOFs) for Super-Proton Conductor. And the article contained the following:

Designing high-performance proton-conducting metal-organic frameworks simultaneously having highly hydrothermal stability and a high-d. proton carrier remains a great challenge. Fe-MIL-88B is a classic metal-organic framework (MOF) with a large-size one-dimensional (1D) channel lined with a high-d. uncoordinated metal atom for postfunctionalization; however this MOF cannot act as a proton conductor due to the weak hydrothermal stability. Here, we prepared an ultrastable isostructure Cr-MIL-88B, which is subsequently functionalized by anchoring 3-pyridinesulfonic acid and 2-(4-pyridyl) ethanesulfonic acid on the naked Cr atoms exposed on the surface of the host-framework, producing two new MOFs, i.e. Cr-MIL-88B-pyridine sulfonic acid (abbreviated as Cr-MIL-88B-PSA) and Cr-MIL-88B-pyridine ethanesulfonic acid (abbreviated as Cr-MIL-88B-PESA). Thus, Cr atoms on the host framework were modified by functional sulfonic groups, which stick out toward the center of the channel forming ordered high-d. sulfonic groups as proton donors along the open channel and achieving the highest proton conductivity of 4.50 × 10-2 S cm-1 for Cr-MIL-88B-PESA and 1.58 × 10-1 S cm-1 for Cr-MIL-88B-PSA, surpassing that of the Nafion membrane. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Electric Literature of 636-73-7

The Article related to metal organic framework proton conductor porous sulfonic group chromium, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Electric Literature of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On December 15, 2018, Han, Fei; Tu, Zeyi; Wan, Zhongquan; Luo, Junsheng; Xia, Jianxing; Hao, Guimin; Yi, Yuanping; Wang, Ruilin; Jia, Chunyang published an article.Reference of Pyridine-3-sulfonic acid The title of the article was Effect of functional group position change of pyridinesulfonic acid as interface-modified layer on perovskite solar cell. And the article contained the following:

There are fewer researches on the effect of functional group position change on device performance for highly efficient perovskite solar cell. In this work, we take pyridinesulfonic acid as an example, and study the effect of the isomeride: 2- and 3-pyridinesulfonic acid self-assembled monolayer on device performance for highly efficient perovskite solar cell. The efficiency of control device is 14.65% (Hysteresis Index = 0.31) under illumination of a simulated sunlight (AM 1.5G, 100 mW cm-2). Through use of the 3-pyridinesulfonic acid self-assembled monolayer, the device exhibits striking improvements to reach the efficiency of 16.88% (Hysteresis Index = 0.02), which constitutes an enhancement compared to those of 2-pyridinesulfonic acid self-assembled monolayer modified device (16.54%, Hysteresis Index = 0.02). The enhanced photovoltaic performances can be attributed to the larger perovskite grain sizes, and easier passivation of electron transporting layer/perovskite interface, which promote the charge separation, transport and collection. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Reference of Pyridine-3-sulfonic acid

The Article related to perovskite solar cell self assembled monolayer isomeride passivation, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Reference of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Chesnokova, Alexandra N.; Lebedeva, Oksana V.; Pozhidaev, Yury N.; Ivanov, Nikolay A.; Rzhechitskii, Alexander E. published an article in 2014, the title of the article was Synthesis and properties of composite membranes for polymer electrolyte membrane fuel cells.Application of 636-73-7 And the article contains the following content:

The paper is devoted to the sol-gel synthesis of proton conductive organic-silicon composite membranes based on tetra-Et orthosilicate (TEOS) and copolymers of 2-methyl-5-vinylpyridine and vinyl chloride (MVP-VC), 2-methyl-5-vinylpyridine and vinyl acetate (MVP-VA), copolymers of ethylene glycol vinyl glycidyl ether and styrene (KS-1 and KS-2), and nitrogen-containing heteroaromatic derivatives of sulfonic acids: 2-phenyl-5-benzimidazolsulfonic acid (PBISA) and pyridine-3-sulfonic acid (PSA). Properties of synthesized membranes, such as proton conductivity, activation energy, ion exchange capacity, dimensional stability have been investigated. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Application of 636-73-7

The Article related to polymer electrolyte composite membrane fuel cell property synthesis, Electrochemical, Radiational, and Thermal Energy Technology: Energy-Conversion Devices and Their Components and other aspects.Application of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Vela, Sonia; Berrocal, Jose Augusto; Atienza, Carmen; Meijer, E. W.; Martin, Nazario published an article in 2017, the title of the article was Mesoscopic helical architectures via self-assembly of porphyrin-based discotic systems.Category: pyridine-derivatives And the article contains the following content:

Mesoscopic super-helixes with preferred helicity were serendipitously formed from the self-assembly of electroactive extended core discotic mols. The study at dilute concentrations reveals intramol. hydrogen-bonding and π-π stacking interactions as the driving force of the chiral self-assembly at different length scales. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Category: pyridine-derivatives

The Article related to mesoscopic helical architecture chiral selfassembly porphyrin discotic, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Zahn, Stefan; Reckien, Werner; Kirchner, Barbara; Staats, Holger; Matthey, Jens; Luetzen, Arne published an article in 2009, the title of the article was Towards allosteric receptors: adjustment of the rotation barrier of 2,2′-bipyridine derivatives.Computed Properties of 75449-26-2 And the article contains the following content:

Quantum-chem. calculations at the BP86/TZVP level of theory were performed to determine the energy differences between the syn and the anti conformers, as well as the energy barrier for the rotation of the aryl-aryl bond of 2,2′-bipyridine mols. and a number of disubstituted derivatives Substituents with hydrogen-bond donor (or electron acceptor) functions or hydrogen-bond acceptors (or electron donors) are generally found to have large effects on the difference and the barrier. Substitution with a hydrogen-bond donor (or an electron acceptor) at position 6 and 6′ leads to a decrease owing to a charge transfer from the pyridine nitrogen lone pair to the donor, which is caused by the formation of weak intramol. hydrogen bonds and/or dipolar interactions, resp. Conversely, substitution at position 4 and 4′ causes an increase in the energy barrier. Substitution with a hydrogen-bond accept- or (or an electron donor) shows the opposite behavior, which can be explained by the weak intramol. interactions. Interestingly, even very weak CH hydrogen-bond donors (electron acceptors) such as Me groups have a significant influence. This indicates the importance of such weak interactions for the structure and energetics of supramol. systems. The energy differences are mainly governed by the substituents directly attached to the bipyridine core as the introduction of sterically demanding groups in the periphery hardly influences the barriers or energy differences of the conformers. These findings are important for the design of heterotropic pos. cooperative allosteric receptors with 2,2′-bipyridines as the allosteric center. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).Computed Properties of 75449-26-2

The Article related to allosterism electron donor receptor rotation barrier bipyridine, Physical Organic Chemistry: Stereochemistry and Stereochemical Relationships, Including Conformational Inversions and Rotational Isomerization and other aspects.Computed Properties of 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 3, 2005, Dress, Klaus Ruprecht; Hu, Qiyue; Johnson, Ted William; Plewe, Michael Bruno; Tanis, Steven Paul; Wang, Hai; Yang, Anle; Yin, Chunfeng; Zhang, Junhu published a patent.Category: pyridine-derivatives The title of the patent was Preparation of N-hydroxy pyrrolopyrimidinecarboxamides as inhibitors of HIV integrase.. And the patent contained the following:

Title compounds [I; R1 = H, (substituted) alkyl, alkenyl, heteroalkyl; R2, R5 = H; R3 = (CR8R9)tNR10R11, (substituted) heteroalkyl; R4 = H, halo, alkyl, heteroalkyl, (substituted) alkenyl, alkynyl, OR12a, NR12aR12b; R6 = H, alkyl, heteroalkyl, (substituted) alkenyl; R8, R9 = H, alkyl; R10R11N = (substituted) cycloheteroalkyl; R12a, R12b, R12c = H, alkyl; t = 1-3], were prepared Thus, 1-(2,4-difluorobenzyl)-1H-pyrrolo[2,3-c]pyridine-5-carboxylic acid (preparation given) was stirred with O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate, Et3N, and NH2OH.HCl in DMF for 16 h to give 48% N-hydroxy-1-(2,4-difluorobenzyl)-1H-pyrrolo[2,3-c]pyridine-5-carboxamide. The latter showed an EC50 = 0.00795 μM in an HIV-1 cell protection assay. The experimental process involved the reaction of Methyl 5-amino-4-methylpicolinate(cas: 868551-99-9).Category: pyridine-derivatives

The Article related to pyrrolopyrimidinecarboxamide hydroxy preparation hiv integrase inhibitor, aids arc treatment hydroxamide pyrrolopyrimidine preparation, Heterocyclic Compounds (More Than One Hetero Atom): Fused-Ring Systems With Two Or More Hetero Atoms, No More Than One Hetero Atom Per Ring and other aspects.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kaczmarek, Lukasz published an article in 1985, the title of the article was Bipyridines. Part XVII. A convenient synthesis of some bipyridinediols and furodipyridines.SDS of cas: 75449-26-2 And the article contains the following content:

A convenient method of preparation of some bipyridinediols e.g. I, II and furodipyridines III (X or X1 or X2 = N) based on diazotization of corresponding diamines in H2SO4 has been described. The experimental process involved the reaction of [2,2′-Bipyridine]-3,3′-diamine(cas: 75449-26-2).SDS of cas: 75449-26-2

The Article related to bipyridinediamine diazotization cyclization, bipyridinediol, furodipyridine, Heterocyclic Compounds (More Than One Hetero Atom): Fused-Ring Systems With Two Or More Hetero Atoms, No More Than One Hetero Atom Per Ring and other aspects.SDS of cas: 75449-26-2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem