Category: 33100-27-5

Ali, Mubarak; Nasir, Saima; Froehlich, Kristina; Ramirez, Patricio; Cervera, Javier; Mafe, Salvador; Ensinger, Wolfgang published their research in Advanced Materials Interfaces in 2021. The article was titled 《Size-Based Cationic Molecular Sieving through Solid-State Nanochannels》.SDS of cas: 33100-27-5 The article contains the following contents:

The mol. sieving behavior of soft-etched polyimide membranes having neg. charged nanochannels is described exptl. and theor. using alkali metal-crown ether cationic complexes and alkylammonium cations. To this end, the elec. conduction and current rectification obtained with different alkali electrolyte solutions (LiCl, NaCl, and KCl) and crown ether mols. (12-crown-4, 15-crown-5, and 18-crown-6) are studied. The results suggest that only the [Li(12C4)]+ complex can readily permeate through the nanochannels because significant current decreases are obtained in the cases of the [Na(15C5)]+ and [K(18C6)]+ complexes. In solutions of organic cations ranging from ammonium (NH4+) to alkylammonium (R4N+) with increasing mol. size, only the smaller ions can conduct high elec. currents, suggesting again that the membrane channels are in the nanometer range. Taken together, the observed current decreases and rectification phenomena demonstrate that the functionalized membranes allow a versatile combination of mol. and electrostatic sieving. In the experiment, the researchers used many compounds, for example, 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5SDS of cas: 33100-27-5)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. SDS of cas: 33100-27-5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

《Permeation selectivity of alkali metal ions through crown ether based ion channels》 was published in Journal of Molecular Liquids in 2020. These research results belong to Ahmed, Arsalan; Hashmi, Muhammad Ali; Ayub, Khurshid. Safety of 1,4,7,10,13-Pentaoxacyclopentadecane The article mentions the following:

Synthetic ion channels mimic the natural ion channels for various biol. activities such as drug delivery, signal transduction, as biosensors and as antibacterial agents. Among the synthetic ion channels, crown ether-based ion channels show greater selectivity for K+ and Na+, compared to other metal ions. These synthetic ion channels can therefore be utilized for the selective transport of K+ and Na+ which is important for various biol. processes. In this work, theor. insight for the permeability and selectivity of crown ether-based ion channels is provided. Permeability is studied by passing the alkali metal ion directly through the crown ether macrocyclic cavity, as well as through the empty spaces present in the packings. For this purpose, 18-crown-6, 15-crown-5 ether and their substituted derivatives have been studied. The results show that 18-crown-6-ethers are more selective for K+, while 15-crown-5 ethers are selective for Li+. Moreover, the results show that the ion transport can also occur through the empty spaces present in crown ether packings. The factors responsible for the greater selectivity of ions through a certain system are the sizes of the ion and cavity. Furthermore, substituents on the crown ether cycle help the system to form columnar packing which is found to decrease the permeation barrier for passing ions.1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Safety of 1,4,7,10,13-Pentaoxacyclopentadecane) was used in this study.

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Safety of 1,4,7,10,13-Pentaoxacyclopentadecane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

《A paradigm shift for a new class of proton exchange membranes with ferrocyanide proton-conducting groups providing enhanced oxidative stability》 was written by Zhang, Xiangwen; Li, Yi; Liu, Xin; Zhang, Junfeng; Yin, Yan; Guiver, Michael D.. Synthetic Route of C10H20O5 And the article was included in Journal of Membrane Science in 2020. The article conveys some information:

A new class of proton exchange membranes (PEMs) containing ferrocyanide groups as both proton-conducting/radical scavenger components are fabricated. Here, the ferrocyanide groups are bonded to a com. fluoroelastomer polymer main chain, resulting in ferrocyanide-coordinated PEMs (CFC) for proton exchange membrane fuel cells (PEMFCs). The CFC PEMs show a larger hydrophilic morphol. phase than Nafion 212 membrane, even in the CFC having lower ion exchange capacity, owing to stronger electrostatic forces among ferrocyanide groups than traditional sulfonic groups. Compared with Nafion 212, CFC membranes present inferior proton conductivity in water. However, they show much lower activation energy for proton transport in water, and considerably higher proton conductivity than Nafion 212 under low relative humidity (RH). This is related to the larger hydrophilic domains that may construct better-connected channels for proton transport, especially at low membrane hydration levels. As a result, CFC membranes exhibit better power output than Nafion 212 in PEMFC evaluations under low RH conditions. The chem. accelerated stress test (AST) demonstrates that the radical scavenging ability of ferrocyanide group is effective for greatly reducing electrochem. oxidation The experimental process involved the reaction of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Synthetic Route of C10H20O5)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Synthetic Route of C10H20O5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2022,Li, Rongrong; Yang, Xinzheng; Ping, Hongming published an article in Catalysis Science & Technology. The title of the article was 《A radical mechanism for C-H bond cross-coupling and N2 activation catalysed by β-diketiminate iron complexes》.Related Products of 33100-27-5 The author mentioned the following in the article:

Our d. functional theory calculations reveal a radical mechanism for N2 fixation and conversion to N(SiMe3)3 and PhN(SiMe3)2 catalyzed by a diketiminate-supported iron system. We found that the Na(15-crown-5) radical plays an essential role as a co-catalyst in the reaction for the formation of the Me3Si radical and a stable intermediate. The attack of two Me3Si· radicals to distal nitrogen and the Ph migration to proximal nitrogen gradually weaken and activate the NN bond. The turnover-limiting step in the whole catalytic reaction is the activation of the C-H bond with a free energy barrier of 20.3 kcal mol-1. MO anal. of dinitrogen complexes indicates that the π back-bonding interactions between iron and N2 orbitals have major contributions to N2 fixation. In the experiment, the researchers used many compounds, for example, 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Related Products of 33100-27-5)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Related Products of 33100-27-5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Recommanded Product: 1,4,7,10,13-PentaoxacyclopentadecaneIn 2020 ,《Specific Host-Guest Interactions in the Crown Ether Complexes with K+ and NH4+ Revealed from the Vibrational Relaxation Dynamics of the Counteranion》 was published in Journal of Physical Chemistry B. The article was written by Zhou, Dexia; Hao, Hongxing; Ma, Yinhua; Zhong, Hongmei; Dai, Ya’nan; Cai, Kaicong; Mukherjee, Somnath; Liu, Jing; Bian, Hongtao. The article contains the following contents:

The specific host-guest interactions in the corresponding complexes of K+ and NH4+ with typical crown ethers were investigated by using FTIR and ultrafast IR spectroscopies. The counteranions, i.e., SCN-, were employed as a local vibrational probe to report the structural dynamics of the complexation. It was found that the vibrational relaxation dynamics of the SCN- was strongly affected by the cations confined in the cavities of the crown ethers. The time constant of the vibrational population decay of SCN- in the complex of NH4+ with the 18-crown-6 was determined to be 6 ± 2 ps, which is ~30 times faster than that in the complex of K+ with the crown ethers. Control experiments showed that the vibrational population decay of SCN- depended on the size of the cavities of the crown ethers. A theor. calculation further indicated that the nitrogen atom of SCN- showed preferential coordination to the K+ ions hosted by the crown ethers, while the NH4+ can form hydrogen bonds with the oxygen atoms in the studied crown ethers. The geometric constraints formed in the complex of crown ethers can cause a specific interaction between the NH4+ and SCN-, which can facilitate the intermol. vibrational energy redistribution of the SCN-. The experimental process involved the reaction of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Recommanded Product: 1,4,7,10,13-Pentaoxacyclopentadecane)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Recommanded Product: 1,4,7,10,13-Pentaoxacyclopentadecane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2019,Journal of Physical Chemistry C included an article by Yang, Yi-Fei; Chiou, Chun-Yu; Liu, Chuan-Wen; Chen, Cheng-Lung; Lee, Jyh-Tsung. Category: ethers-buliding-blocks. The article was titled 《Crown Ethers as Electrolyte Additives To Modulate the Electrochemical Potential of Lithium Organic Batteries》. The information in the text is summarized as follows:

Organic batteries have attracted much attention because of their flexibility, high-power densities, and highly designable structures of electrode-active materials. The electrochem. potential of the batteries can be modulated using different organic redox species or by structural modification of the redox unit centers. In this study, the electrochem. potential of lithium organic radical batteries is modulated, without the structural modification of the redox unit centers. Two different crown ethers, 12-crown-4 (12C4) and 15-crown-5 (15C5), served as electrolyte additives to increase the electrochem. potential of the batteries. An average discharge voltage can be increased to 3.90 V through the electrolyte system using various concentrations of the electrolyte salt and crown ethers. The addition of 1 equiv of 12C4 to the Li|0.25 M LiClO4-ethylene carbonate/diethyl carbonate (= 1/1, volume/volume|poly(2,2,6,6-tetramethylpiperidin-1-oxy-4-yl methacrylate) cells significantly improved the capacity retention up to 21% after 300 cycles at a current rate of 3C. Furthermore, the structures and system energies of the lithium-crown ether complexes are investigated using d. functional theory calculations1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Category: ethers-buliding-blocks) was used in this study.

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Category: ethers-buliding-blocks

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

In 2019,Chinese Chemical Letters included an article by Ali, Mohammad Chand; Liu, Ruirui; Chen, Jia; Cai, Tianpei; Zhang, Haijuan; Li, Zhan; Zhai, Honglin; Qiu, Hongdeng. Application In Synthesis of 1,4,7,10,13-Pentaoxacyclopentadecane. The article was titled 《New deep eutectic solvents composed of crown ether, hydroxide and polyethylene glycol for extraction of non-basic N-compounds》. The information in the text is summarized as follows:

Here we firstly report a series of new deep eutectic solvents (DESs) induced by small amounts of crown ether complex and mainly formed by polyethylene glycol. These DESs not only presented the ultra-deep extraction of non-basic N-compounds from fuel oils, but also opened up the possibility of other new applications in chem. and materials science. The experimental part of the paper was very detailed, including the reaction process of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Application In Synthesis of 1,4,7,10,13-Pentaoxacyclopentadecane)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Application In Synthesis of 1,4,7,10,13-Pentaoxacyclopentadecane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

《Dynamics and Structural Diversity of Li+(Crown Ether) Supramolecular Cations in Electrically Conducting Salts》 was written by Sambe, Kohei; Hoshino, Norihisa; Takeda, Takashi; Nakamura, Takayoshi; Akutagawa, Tomoyuki. Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane And the article was included in Journal of Physical Chemistry C in 2020. The article conveys some information:

Li+([12]crown-4)2(TCNQ)2 (1), Li+([15]crown-5)(TCNQ)2 (2a and 2b), and Li+([18]crown-6)(TCNQ)2·(H2O)2 (3) salts (TCNQ = 7,7,8,8-tetracyano-p-quinodimethane) were prepared and examined in terms of crystal structures, dielec. constants, magnetic susceptibilities, and elec. conductivities. The dynamic behavior of the small Li+ was easily activated inside the cavities of [15]crown-5 and [18]crown-6. In salt 2a, a structural phase transition at 160 K is thermally activated by a change in the -CN···Li+···NC- coordination from an asym. to a sym. environment. The phase-transition temperature for salt 2a is ∼25 K lower than that for the isostructural Na+([15]crown-5)(TCNQ)2, indicating that the behavior of Li+ inside the [15]crown-5 cavity is considerably more dynamic than that of Na+ in the same situation. Crystal polymorphs 2a and 2b are observed for Li+([15]crown-5) supramol. cations, where the two-dimensional intermol. interactions of TCNQs in salts 2a and 2b are constructed by the spanning-overlap mode of the π-dimers and π-tetramers, resp. The packing periodicity in the latter salt is twice that in the former, and this structural difference prevents the structural phase transition for salt 2b. In salt 3, the orientational disorder of Li+ inside the cavity of the [18]crown-6 is a combination of the dynamic behavior of Li+ itself and that of Li+-coordinated polar H2O mols., which are evidenced by two types of dielec. relaxation. Li+ is considerably smaller than Na+, allowing it to form a dynamic Li+···O coordination environment. The experimental part of the paper was very detailed, including the reaction process of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane)

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Magosso, M.; van den Berg, M.; van der Schaaf, J. published an article in 2021. The article was titled 《Kinetic study and modeling of the Schotten-Baumann synthesis of peroxyesters using phase-transfer catalysts in a capillary microreactor》, and you may find the article in Reaction Chemistry & Engineering.Computed Properties of C10H20O5 The information in the text is summarized as follows:

The kinetics of the synthesis of tert-Bu peroxy-2-ethylhexanoate were investigated in a capillary microreactor. TBPEH was synthesized from 2-ethylhexanoyl chloride and tert-Bu hydroperoxide in the presence of a strong base, using the Schotten-Baumann method. The peroxyesterification reaction is always in competition with the unwanted acid chloride hydrolysis. The synthesis was carried out with and without a phase-transfer catalyst. The non-catalyzed reaction showed a low rate, which could be incremented by increasing the temperature and the liquid-liquid interfacial area or by using KOH instead of NaOH as base. The peroxyesterification and hydrolysis rates increased with temperature However, the use of KOH or the increase in interfacial area accelerated only the peroxyester formation, increasing the selectivity towards the desired product. The addition of a PTC enhanced the peroxyesterification rate without changing the hydrolysis rate. Among the screened PTCs, quaternary ammonium salts with longer alkyl chains gave the best performance, up to 25 times faster peroxyesterification. The rate increase was proportional to the PTC amount The interfacial area had the same effect as in the non-catalyzed reaction. Because of the tremendous increase in the reaction speed due to the PTC, the rate increased with slug velocity. At low slug velocity the reactants in the thin liquid film surrounding the droplets in the capillary are depleted and the peroxyesterification rate decreases. A reaction mechanism is proposed that explains the exptl. observation. The corresponding kinetic model predicts the observed reaction rate with 10% accuracy.1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5Computed Properties of C10H20O5) was used in this study.

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. Computed Properties of C10H20O5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

COA of Formula: C10H20O5In 2020 ,《Supramolecular assemblies based on crown- and phosphoryl-substituted phthalocyanines and their metal complexes in microheterogeneous media》 appeared in Russian Chemical Bulletin. The author of the article were Goldshleger, N. F.; Lapshina, M. A.; Baulin, V. E.; Shiryaev, A. A.; Gorbunova, Yu. G.; Tsivadze, A. Yu.. The article conveys some information:

Abstract: The review is concerned with studies on peculiar features of supramol. organization of phthalocyanines (Pc) bearing complex-forming substituents (15-crown-5, 2-oxyphenylphosphonic acid residues) in organized aqueous microheterogeneous media based on cationic and anionic surfactants, bile salts (BS) including sodium deoxycholate (SDC), as well as polyelectrolytes and amphiphilic polymers including a phosphate buffer (pH 7.4). Organized, SDC-based fluorescence-active phthalocyanine-containing hydrogels obtained for the first time are also considered. In vitro accumulation and localization of Pc in human cervical adenocarcinoma cells, HeLa, as well as the photochem. and sensitizing properties of Pc including light cytotoxicity and photoinduced generation of reactive oxygen species were demonstrated taking octa-crown-substituted magnesium phthalocyaninate as an example.1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5COA of Formula: C10H20O5) was used in this study.

1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. COA of Formula: C10H20O5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem