Tag: 100-200

Ionic Liquid-Water Mixtures: Enhanced K_w for Efficient Cellulosic Biomass Conversion was written by Zhang, Yuetao;Du, Hongbo;Qian, Xianghong;Chen, Eugene Y.-X.. And the article was included in Energy & Fuels in 2010.Name: 1-ethyl-2,3-dimethylimidazolium chloride This article mentions the following:

Under relatively mild conditions (≤ 140°, 1 atm) and in the absence of added acid catalysts typically employed in biomass conversion, cellulose dissolved in certain ionic liquids (ILs) was converted into water-soluble reducing sugars in high total reducing sugar yield (up to 97%), or directly into the biomass platform chem. 5-hydroxymethyl furfural (HMF) in high conversion (up to 89%) when CrCl₂ is added. The combined study of exptl. methods and ab initio calculations demonstrates that the significantly increased K_w by ILs in the IL-water mixture is responsible for the catalysis seen in the current efficient biomass conversion system without added acid catalysts. The finding that the water in ILs under mild conditions can exhibit high K_w values (up to 3 orders of magnitude higher than the pure water under ambient conditions) is significant because such high K_w values are typically achievable by the water under harsh high-temperature or subcritical water conditions. In the experiment, the researchers used many compounds, for example, 1-ethyl-2,3-dimethylimidazolium chloride (cas: 92507-97-6Name: 1-ethyl-2,3-dimethylimidazolium chloride).

1-ethyl-2,3-dimethylimidazolium chloride (cas: 92507-97-6) belongs to imidazole derivatives. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Name: 1-ethyl-2,3-dimethylimidazolium chloride

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Functionalized imidazolium wear-resistant ionic liquid ultrathin films for MEMS/NEMS applications was written by Mo, Yu-Fei;Huang, Fu-Chuan;Zhao, Fei. And the article was included in Surface and Interface Analysis in 2011.Application of 79917-89-8 This article mentions the following:

As a kind of new material, ionic liquids (ILs) are considered a new type of lubricant for micro/nanoelectromech. system (M/NEMS) due to their excellent thermal and elec. conductivity However, so far, only a few reports have investigated the friction and wear of thin films of these materials at the micro scale. Evaluating the nanoscale tribol. performance of ILs when applied as films of a few nanometers thickness on a substrate is a critical step for their application in M/NEMS devices. To achieve this purpose, IL thin films with four kinds of anions were synthesized and prepared on single-crystal silicon wafers by the dip-coating method. Film thickness was determined by the ellipsometric method. Their surface morphologies were observed by means of at. force microscopy (AFM). The nano and micro tribol. properties of the IL films were investigated by a friction force microscope (FFM)with a spherical probe and a UMT-2MT tribotester, resp. The corresponding morphologies of the wear tracks of the IL films were examined using a three-dimensional non-contact interferometric microscope. The impact of temperature on the adhesion behavior was studied, as well as the effect of sliding frequency and load on the friction coefficient, load bearing capacity and anti-wear durability. It was found that friction, adhesion and durability of IL films were strongly dependent on their anionic mol. structures, wettability and ambient environment. Copyright © 2010 John Wiley & Sons, Ltd. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8Application of 79917-89-8).

1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Application of 79917-89-8

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Photoreactions of aromatic compounds. XXXVI. Nucleophilic photosubstitution reactions of some derivatives of imidazole and pyrazole was written by Oldenhof, C.;Cornelisse, J.. And the article was included in Recueil des Travaux Chimiques des Pays-Bas in 1978.Recommanded Product: 3034-41-1 This article mentions the following:

Nucleophilic photosubstitution of nitro derivatives of 1-methylimidazole and 1-methylpyrazole strongly depends on the position of the nitro group. In the imidazole series the 5-nitro compound is the most reactive isomer; photochem. replacement of the nitro group by cyano or methoxy proceeds in good yield. On the nitro-substituted 1-methylpyrazoles, the 3-nitro derivative is the most reactive isomer; photocyanation yields equal amounts of 1-methyl-3-nitro-4-cyanopyrazole and 1-methyl-3-nitrosopyrazole. Some of the reactions proceed by normal bimol. aromatic photosubstitution; others bear resemblance to the photoreactions of methoxybenzenes and -naphthalenes in which a cation radical is intermediate. In the experiment, the researchers used many compounds, for example, 1-Methyl-4-nitroimidazole (cas: 3034-41-1Recommanded Product: 3034-41-1).

1-Methyl-4-nitroimidazole (cas: 3034-41-1) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Imidazole derivatives have antibacterial, antifungal and anticancer functionality. It interacts with DNA and also binds to protein and stops cell division.Recommanded Product: 3034-41-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Quantum chemical aided prediction of the thermal decomposition mechanisms and temperatures of ionic liquids was written by Kroon, Maaike C.;Buijs, Wim;Peters, Cor J.;Witkamp, Geert-Jan. And the article was included in Thermochimica Acta in 2007.Formula: C7H13ClN2 This article mentions the following:

The long-term thermal stability of ionic liquids is of utmost importance for their industrial application. Although the thermal decomposition temperatures of various ionic liquids have been measured previously, exptl. data on the thermal decomposition mechanisms and kinetics are scarce. It is desirable to develop quant. chem. tools that can predict thermal decomposition mechanisms and temperatures (kinetics) of ionic liquids In this work ab initio quantum chem. calculations (DFT-B3LYP) have been used to predict thermal decomposition mechanisms, temperatures and the activation energies of the thermal breakdown reactions. These quantum chem. calculations proved to be an excellent method to predict the thermal stability of various ionic liquids In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8Formula: C7H13ClN2).

1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Formula: C7H13ClN2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Effect of 4-amino-5-imidazolecarboxamide and related compounds on the growth of Entamoeba histolytica was written by Nakamura, Mitsuru. And the article was included in Canadian Journal of Microbiology in 1957.Application of 26832-08-6 This article mentions the following:

4-Amino-5-imidazolecarboxamide and 4-amino-5-imidazolecarboxamidine were found to be stimulatory to E. histolytica (NRS strain) when studied under bacteria-free conditions. These compounds in combination with folic acid or leucovorin, adenosinetriphosphate, and ribose-5-phosphate greatly stimulated amebic multiplication. Growth was measured qualitatively. In the experiment, the researchers used many compounds, for example, 1H-Imidazole-4-carboxamide (cas: 26832-08-6Application of 26832-08-6).

1H-Imidazole-4-carboxamide (cas: 26832-08-6) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole also acts as a microtubule destabilizing agents and inhibits topoisomerase and Cytochrome P450 Family 26 Subfamily A Member 1 (CYP26A1) enzymes.Application of 26832-08-6

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Chlorodifluoromethane as a C1 Synthon in the Assembly of N-Containing Compounds was written by Ma, Xingxing;Su, Jianke;Zhang, Xingang;Song, Qiuling. And the article was included in iScience in 2019.Recommanded Product: 7-Methyl-1H-benzo[d]imidazole This article mentions the following:

A quadruple cleavage of chlorodifluoromethane to yield a C1 source, which was successfully employed in the construction of various N-containing compounds e.g., C₆H₅N(CH₃)CH=NC₆H₅ especially with pharmaceutical mols. under mild conditions was reported. This strategy provides a useful method for late-stage modification of pharmaceutical compounds Four bonds in ClCF₂H were orderly cleaved under basic conditions in the absence of transition metals. Preliminary mechanistic studies revealed that (E)-N-phenylformimidoyl fluoride intermediate is involved in this process by in situ ¹H NMR studies and control experiments In the experiment, the researchers used many compounds, for example, 7-Methyl-1H-benzo[d]imidazole (cas: 4887-83-6Recommanded Product: 7-Methyl-1H-benzo[d]imidazole).

7-Methyl-1H-benzo[d]imidazole (cas: 4887-83-6) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Recommanded Product: 7-Methyl-1H-benzo[d]imidazole

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Interconnection of smectic domains by polyethylene oxide networks for long-range conducting channels towards efficient and thermally stable dye-sensitized solar cells was written by Wang, Caihong;Li, Xueyong;Zhou, Jiwen;Tian, Wen;Ji, Junyi;Tan, Shuai;Wu, Yong. And the article was included in Nanoscale in 2020.Product Details of 1632-83-3 This article mentions the following:

The development of an efficient electrolyte that combines fast charge transport and high stability for advanced energy devices remains a huge challenge because these two qualities are traded off during the normal design process. Nanostructured liquid crystals have shown potential as efficient charge transport media. However, the reported liquid crystal electrolytes showed limited performance in energy devices probably due to the charge transport barrier at the domain interfaces. Herein, a novel approach was proposed to construct self-assembled long-range charge transport channels in liquid crystal electrolytes by interconnecting the liquid crystal domains via flexible polymer networks. A liquid crystal gel electrolyte was prepared by solidifying a smectic electrolyte using polyethylene oxide (PEO) networks, and applied to improve the performance of the dye-sensitized solar cells (DSSCs). In the gel electrolyte, the smectic assembly formed lamellar nanostructures for charge transport at the intra-domains, while the PEO networks aggregated amorphously at the domain interfaces, acting as bridges to interconnect the smectic domains for charge transport over the inter-domains. Based on the coordination of the smectic assembly and PEO aggregation, the charge transport in the liquid crystal gel electrolyte was greatly improved despite a higher viscosity. Conversely, the photovoltaic efficiency of the DSSC prepared from the liquid crystal gel electrolyte was about two times enhanced, with a champion efficiency of 7.2%, compared with that from the smectic electrolyte without PEO. The liquid crystal gel-based DSSC showed superior stable performance within a wide temperature range from 30 to 70°C, and stored after 5000 h. Our work here provides a novel and convenient approach to break the trade-off for high-performance electrolytes towards efficient and stable energy devices. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3Product Details of 1632-83-3).

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Imidazole derivatives have antibacterial, antifungal and anticancer functionality. It interacts with DNA and also binds to protein and stops cell division.Product Details of 1632-83-3

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Au/TiO₂ nanotube array based multi-hierarchical architecture for highly efficient dye-sensitized solar cells was written by Fu, Nianqing;Jiang, Xiongzhuo;Chen, Dongchu;Duan, Yandong;Zhang, Guoge;Chang, Menglei;Fang, Yanyan;Lin, Yuan. And the article was included in Journal of Power Sources in 2019.Quality Control of 1-Methylbenzimidazole This article mentions the following:

Control over balanced high light-harvesting and efficient charge transport is of crucial importance for photoelectrochem. applications but still remains great challenge. We develop here single-wall TiO₂ nanotube array with in-situ deposited Au nanoparticles. Based on this Au-TiO₂ hybrid, we further build a cigar-like Au/TiO₂-nanotube-array/TiO₂-nanoparticles multi-hierarchical architecture through a novel vacuum-assisted colloid-filling approach for dye-sensitized solar cell application. In this elaborate structure, Au nanoparticles welding on nanotube walls play dual roles of direct injecting hot electrons into TiO₂ to elevate the conductivity of TiO₂ film by ∼4 times (under illumination) for fast electron transport, and introducing a plasmonic effect to improve light-harvesting as well. Meanwhile, the thick TiO₂ nanoparticle decoration provides the photoanode vast surface area for ∼3.2 times the dye-loading amount of the pristine TiO₂ nanotube array based electrode, which will further boost the light-harvesting remarkably. The resulting dye-sensitized solar cell yields an impressively high power conversion efficiency of 8.93%, which is 190.4% that of the pristine TiO₂ nanotube array based device. This technol. provides also a promising prospect for the preparation of multi-hierarchical structures for a wide range of applications, such as photocatalysis and gas sensors. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3Quality Control of 1-Methylbenzimidazole).

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3–C6) is higher than in water and generally decreases with a Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Quality Control of 1-Methylbenzimidazole

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Polarographic and physicochemical studies of nitro, halo-, and carbonyl derivatives of imidazol was written by Laviron, Etienne. And the article was included in Compt. Rend. in 1962.Safety of 1-Methyl-4-nitroimidazole This article mentions the following:

The equilibrium between 2 forms of imidazole substituted in position 4 or 5 was investigated. In acidic solutions, the E_1/2 values of 4-nitroimidazole (I) and 4-nitro-1-methylimidazole as well as their ultraviolet absorption spectra are identical, indicating that the form A of I predominates over B. The difference in E_1/2 between I and 2-nitroimidazole is sufficient for analysis of their mixture The last of the 3 polarographic waves of 2,4,5-triiodoimidazole corresponds to the wave of 2-iodoimidazole, the iodine atom in position 2 being most difficultly reducible. The ratio of the concentrations of form A and B of 4-bromoimidazole is equal to the ratio of the ionization constants of 4-bromo-1-methylimidazole and 5-bromo-1-methylimidazole, viz., 35. Imidazole-4-carboxaldehyde in MeOH or EtOH formed a polarographically inactive hemiacetal. In the experiment, the researchers used many compounds, for example, 1-Methyl-4-nitroimidazole (cas: 3034-41-1Safety of 1-Methyl-4-nitroimidazole).

1-Methyl-4-nitroimidazole (cas: 3034-41-1) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.Safety of 1-Methyl-4-nitroimidazole

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Cu/Fe-mediated N(sp²)-arylation/alkenylation of pyridines with aryl-/alkenylboronic acids to yield versatile cationic materials was written by Wang, Yuzhou;Yu, Yu;Xie, Rongrong;Tian, Ya-Nan;Huang, Lingyu;Lv, Shihai;Meng, Xiaona;Kong, Xiangfei;Li, Shiqing. And the article was included in New Journal of Chemistry in 2022.SDS of cas: 1632-83-3 This article mentions the following:

Cu/Fe-mediated arylation of pyridines with arylboronic acids, featuring a low-cost catalytic system and an easy operation, is disclosed. A series of length-controllable linear (the number of aryls ranges from 2 to 6) and L-shaped pyridinium salts have been easily prepared by this N(sp²)-arylation and they show tunable fluorescence emission that is mainly tailored by the length of the N-aryl rather than C-aryl groups. Furthermore, direct N-alkenylation of sp²-nitrogen heterocycles is reported. Moreover, the AIE, pH-responsive and electrochromic properties of the relevant pyridinium salts are researched. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3SDS of cas: 1632-83-3).

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.SDS of cas: 1632-83-3

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem