Month: October 2022

Bruce, Michael I.; Head, Nicholas J.; White, Allan H.; Skelton, Brian W. published an article on January 31 ,2004. The article was titled 《1,4-Diethynyl-2,5-dimethoxybenzene at ca 150 K》, and you may find the article in Acta Crystallographica, Section C: Crystal Structure Communications.Formula: C12H10O2 The information in the text is summarized as follows:

The principal determinants of packing in crystals of the title compound, C12H10O2, which has crystallog. imposed inversion symmetry, are interactions between the alkyne H atoms and the methoxy O atoms [H···O = 2.39(1) Å]. Crystallog. data are given. In the experiment, the researchers used many compounds, for example, 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Formula: C12H10O2)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Formula: C12H10O2Although ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly.

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

The author of 《Dopant-free novel hole-transporting materials based on quinacridone dye for high-performance and humidity-stable mesoporous perovskite solar cells》 were Pham, Hong Duc; Jain, Sagar M.; Li, Meng; Manzhos, Sergei; Feron, Krishna; Pitchaimuthu, Sudhagar; Liu, Zhiyong; Motta, Nunzio; Wang, Hongxia; Durrant, James R.; Sonar, Prashant. And the article was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2019. Application In Synthesis of Bis(4-methoxyphenyl)amine The author mentioned the following in the article:

This study reports three newly developed dopant-free hole-transporting materials (HTMs) for perovskite solar cells. The design is based on a quinacridone (QA) dye as the core with three different extended end-capping moieties, namely, acenaphthylene (ACE), triphenylamine (TPA), and diphenylamine (DPA), attached to the QA core. These HTMs were synthesized and used to successfully fabricate in mesoscopic TiO2/CH3NH3PbI3/HTM perovskite devices. Under AM 1.5G illumination at 100 mW cm-2, the devices achieved a maximum efficiency of 18.2% for ACE-QA-ACE, 16.6% for TPA-QA-TPA and 15.5% for DPA-QA-DPA without any additives, whereas reference devices with doped spiro-OMeTAD as the HTM achieved a PCE of 15.2%. Notably, the unencapsulated devices based on the novel dopant-free HTMs exhibited impressive stability in comparison with the devices based on doped spiro-OMeTAD under a relative humidity of 75% for 30 days. These linear sym. HTMs pave the way to a new class of organic hole-transporting materials for cost-efficient and large-area applications of printed perovskite solar cells. In the experiment, the researchers used Bis(4-methoxyphenyl)amine(cas: 101-70-2Application In Synthesis of Bis(4-methoxyphenyl)amine)

Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Application In Synthesis of Bis(4-methoxyphenyl)amine

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

The author of 《Tuning the electrochemical behavior of organodisulfides in rechargeable lithium batteries using N-containing heterocycles》 were Wang, Dan-Yang; Si, Yubing; Li, Junjie; Fu, Yongzhu. And the article was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2019. Application In Synthesis of 1,2-Diphenyldisulfane The author mentioned the following in the article:

S-S bonds in organodisulfides can break and obtain Li+ and e- in the discharge of lithium batteries. Organodisulfides provide precise lithiation sites, and therefore are valuable models for the study of redox reactions in lithium batteries. To understand their electrochem. behavior, we investigate three disulfides with different N-containing heterocycles including 2,2′-dipyridyl disulfide (2,2′-DpyDS), 4,4′-dipyridyl disulfide (4,4′-DpyDS), and 2,2′-dipyridyl disulfide-N,N’-dioxide (DpyDSDO). The three disulfides all show higher discharge voltage plateaus due to the electron-withdrawing groups: DPDS (2.20 V) < 2,2'-DpyDS (2.45 V) = 4,4'-DpyDS (2.45 V) < DpyDSDO (2.80 V). In particular, 2,2'-DpyDS exhibits an outstanding 69% capacity retention over 500 cycles. Our theor. simulations show that lithium pyridine-2-thiolate, the discharge product of 2,2'-DpyDS, forms compact clusters via N···Li···S bridges coordinated by lithium ions, which can help reduce its dissolution in liquid electrolyte, and therefore increase the cycle life. Liquid chromatog.-mass spectrometry is demonstrated to be a powerful tool for the investigation of discharge/recharge products of soluble organodisulfides in rechargeable lithium batteries. The experimental process involved the reaction of 1,2-Diphenyldisulfane(cas: 882-33-7Application In Synthesis of 1,2-Diphenyldisulfane)

1,2-Diphenyldisulfane(cas: 882-33-7) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Application In Synthesis of 1,2-Diphenyldisulfane They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however.

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

The author of 《Highly efficient phenothiazine 5,5-dioxide-based hole transport materials for planar perovskite solar cells with a PCE exceeding 20%》 were Ding, Xingdong; Chen, Cheng; Sun, Linghao; Li, Hongping; Chen, Hong; Su, Jie; Li, Huaming; Li, Henan; Xu, Li; Cheng, Ming. And the article was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2019. Application of 101-70-2 The author mentioned the following in the article:

Two novel phenothiazine 5,5-dioxide (PDO) core building block-based hole transport materials (HTMs), termed PDO1 and PDO2, were designed and synthesized. The introduction of a sulfuryl group in a core unit can deeply influence the energy levels and charge carrier mobilities of relative HTMs. The combined suitable energy level alignment, higher hole mobility and conductivity, as well as highly efficient hole transfer of PDO2 enable the perovskite solar cell (PSC) to achieve an impressive power conversion efficiency (PCE) of 20.2% and good stability when aged under ambient conditions. These results demonstrate the potential versatility of the PDO building block for further development of cost-effective and highly efficient HTMs for PSCs. In the part of experimental materials, we found many familiar compounds, such as Bis(4-methoxyphenyl)amine(cas: 101-70-2Application of 101-70-2)

Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Application of 101-70-2

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

In 2022,Eichstaedt, Natalie; van der Zwan, Kasper P.; Mayr, Lina; Siegel, Renee; Senker, Juergen; Breu, Josef published an article in Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences. The title of the article was 《Crystal structure of phenanthrenide salts stabilized by 15-crown-5 and 18-crown-6》.Application In Synthesis of 1,4,7,10,13-Pentaoxacyclopentadecane The author mentioned the following in the article:

Potassium 15-crown-5 phenanthrenide and potassium 18-crown-6 phenanthrenide were synthesized and characterized by powder X-ray diffraction and 39K solid state NMR spectroscopy. While the radical carbanion is very reactive in solution, the crystals are stable and storable under inert atm. For 15-crown-5, a sandwich-like complex of potassium is formed with two mols. of crown ether per potassium resulting in a coordination number of 10. For the larger 18-crown-6 ligand, a 1:1 complex is obtained and a coordination number of 6 for the potassium cation. In neither crystal structure solvent mols. are incorporated. The 15-crown-5 compound crystallizes faster and is less soluble in THF as compared to the 18-crown-6 compound Both compounds form solid phenanthrenide that is easy to handle and can be applied for reduction reactions. In the experimental materials used by the author, we found 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

The author of 《Importance of terminated groups in 9,9-bis(4-methoxyphenyl)-substituted fluorene-based hole transport materials for highly efficient organic-inorganic hybrid and all-inorganic perovskite solar cells》 were Zhang, Dongyang; Tai, Wu‡; Xu, Peng; Ou, Yangmei; Sun, Anxin; Ma, Huili; Cui, Bo; Sun, Hanwen; Ding, Liming; Hua, Yong. And the article was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2019. Recommanded Product: Bis(4-methoxyphenyl)amine The author mentioned the following in the article:

Hole-transport materials (HTMs) play a crucial role in determining the photovoltaic performance and long-term stability of perovskite solar cells (PSCs), because they not only efficiently facilitate hole-extraction and transfer, but also act as a barrier to protect the perovskite from moisture and oxygen. So far, the power conversion efficiencies (PCEs) over 20% in PSCs have been mostly achieved by employing a Spiro-OMeTAD-based HTM. However, it suffers from some drawbacks such as relatively low hole-mobility, complicated synthesis and difficult purification, which hamper its potential com. applications. Here, for the first time, two new easily accessible 9,9-bis(4-methoxyphenyl)-substituted fluorene-based HTMs comprising H (YT1) and methoxyphenyl-fluorene (YT3) as the terminated groups have been synthesized for use in organic-inorganic hybrid and all-inorganic PSCs. The (FAPbI3)0.85(MAPbBr3)0.15 and CsPbI2Br PSCs based on YT3 yield very impressive PCEs of 20.23% and 13.36%, resp., both of which are higher than that of Spiro-OMeTAD (19.18% and 12.30%). More encouragingly, the YT3-based PSC displays good long-term stability for 600 h. These results confirm that different terminated groups in HTMs show a significant effect on the energy levels, hole extraction and transfer, thin-film surface morphol. and photovoltaic performance. Our findings could provide a useful insight for future rational design of HTMs for highly efficient and stable PSCs. In the part of experimental materials, we found many familiar compounds, such as Bis(4-methoxyphenyl)amine(cas: 101-70-2Recommanded Product: Bis(4-methoxyphenyl)amine)

Bis(4-methoxyphenyl)amine(cas: 101-70-2) is a diphenylamine derivative used as a chemical additive for cured rubber.Bis(4-methoxyphenyl)amine is highly toxic and may potentially induce chromosome abberation.Recommanded Product: Bis(4-methoxyphenyl)amine

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

《Palladium(II) complexes with thione and thioalkylated thiosemicarbazones: Electrochemical, antimicrobial and thermogravimetric investigations》 was written by Eglence-Bakir, Songul; Sahin, Musa; Salt, Betul Zehra; Tuzun, Elif; Kara, Emel Mataraci; Atun, Gulten; Cavus, Selva; Kizilcikli, Irfan. Electric Literature of C8H8O3 And the article was included in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy in 2020. The article conveys some information:

Four methoxy substitute salicylidene thiosemicarbazones were synthesized. The reaction of both thione and thioalkylated thiosemicarbazones with PdCl2 in ethanol yields ONS-coordinated chelate complexes with general formula [Pd(L)Cl]. The structures of eight compounds were characterized by using anal. and spectroscopic methods. Electrochem. of the Pd(II) complexes was studied using cyclic voltammetric technique. The CVs of the complexes were quite complicate because of some oxidative responses of the ligands which proceed by forming conjugated -N:CH-, -HC:CH- and -N:CH-HC:CH- groups. Two cathodic responses attributed to one electron reduction of Pd(II)/(I) and Pd(I)/(0) were observed for the central ion coordinated with S atom of H3C-S- group whereas only one reduction peak appeared when the Pd(II) coordinated with S atom of >C:S group of thiosemicarbazone ligand. The latter also showed an addnl. anodic response assigned to Pd(II)/(III) oxidation Thermogravimetric anal. (TGA) technique was used to investigate and compare the thermal properties of the ligands and their metal complexes. In vitro antimicrobial activity of thiosemicarbazones and their complexes was evaluated against four Gram-neg. bacteria, three Gram-pos. bacteria, and antifungal activity against three fungi. After reading the article, we found that the author used 2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3Electric Literature of C8H8O3)

2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3) is the main component of root bark essential oil of Periploca sepium Bunge. It is a potential tyrosinase inhibitor present in African medicinal plants. 2-Hydroxy-4-methoxybenzaldehyde was used in the synthesis of Schiff base ligand.Electric Literature of C8H8O3

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

《Destructive-quantum-interference suppression in crown ether single molecule junction》 was published in European Physical Journal B: Condensed Matter and Complex Systems in 2020. These research results belong to Mijbil, Zainelabideen Y.; Essa, Haider O.. Quality Control of 1,4,7,10,13-Pentaoxacyclopentadecane The article mentions the following:

The electronic transmission coefficient of X-crown ether-Y (X = 3Y ;Y = 4, 5, and 6) have been investigated using d. functional theory and Green’s function approximation incorporated with the Huckel method. The results illustrate unexpected role of the oxygen atoms to highly enhance charge transport in the crown ether mols. by moving the destructive quantum interferences (QI) close to the Fermi level. Such slight shifting creates a beneficial peak-valley pattern in the transmission spectra that facilitates the ON/OFF variation. Moreover, the length of the crown ether rings offers an insignificant impact on electronic transmission. Hence, we believe that these findings would deepen our understanding of QI patterns and exploit crown ether mols. more practically and efficiently in mol. devices. The results came from multiple reactions, including the reaction 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

In 2022,Ahsin, Atazaz; Jadoon, Tabish; Ayub, Khurshid published an article in Physica E: Low-Dimensional Systems & Nanostructures (Amsterdam, Netherlands). The title of the article was 《M@[12-crown-4] and M@[15-crown-5] where (M=Li, Na, and K); the very first examples of non-conventional one alkali metal-containing alkalides with remarkable static and dynamic NLO response》.Synthetic Route of C10H20O5 The author mentioned the following in the article:

Excess electron compounds, such as alkalides, were shown to be promising nonlinear optical (NLO) materials with higher static and frequency-dependent nonlinearities. The intriguing alkalides are obtained after doping the alkali metals with crown ethers M@[12-crown-4] and M@[15-crown-5] (where M=Li, Na, and K). The studied complexes are thermodynamically stable and their interactions energies range from -66.51 to -3.51 kcal mol-1. The geometric, electronic, and nonlinear optical properties are validated through d. functional theory at the CAM-B3LYP/6-31+G(d,p) level of theory. The significant (neg.) NBO charge present on alkali metals reveals their alkalide characteristics. Furthermore, reduced HOMO-LUMO gaps for the designed complexes show their excellent electronic and conductive properties. Being excess electron candidate the significant static first hyperpolarizability value increased up to 1.2 x 107 au where the βvec response recorded up to 1.1 x 107 au. The total hyperpolarizability nicely correlates with hyperpolarizability (βtl) which suggests their excellent NLO properties. Besides, the dynamic hyperpolarizability response for electro-optical pockel’s effect β(-2ω;ω,0) increases up to 3.5 x 107 au at dispersion frequency of 1064 nm. The dynamic hyperpolarizability responses for SHG are much pronounced at the larger dispersion frequency. The dynamic second hyperpolarizability response for the dc-Kerr effect increases up to 6.4 x 109 au. The frequency-dependent NLO response of M@[12-crown-4] alkalides is slightly larger than those of M@[12-crown-4]. Moreover, the hyper Rayleigh scattering hyperpolarizability (βHRS) value is calculated up to 3.4 x 106 au. The experimental part of the paper was very detailed, including the reaction process 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

《Design of a multivalent bifunctional chelator for diagnostic 64Cu PET imaging in Alzheimer′s disease》 was published in Proceedings of the National Academy of Sciences of the United States of America in 2020. These research results belong to Cho, Hong-Jun; Huynh, Truc T.; Rogers, Buck E.; Mirica, Liviu M.. Product Details of 139115-91-6 The article mentions the following:

Herein, we report a 64Cu positron emission tomog. (PET) imaging agent that shows appreciable in vivo brain uptake and exhibits high specific affinity for beta-amyloid (Aβ) aggregates, leading to the successful PET imaging of amyloid plaques in the brains of 5xFAD mice vs. those of wild-type mice. The employed approach uses a bifunctional chelator with two Aβ-interacting fragments that dramatically improves the Aβ-binding affinity and lipophilicity for favorable blood-brain barrier penetration, while the use of optimized-length spacers between the Cu-chelating group and the Aβ-interacting fragments further improves the in vivo Aβ-binding specificity and brain uptake of the corresponding 64Cu PET imaging agent. The results came from multiple reactions, including the reaction of tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6Product Details of 139115-91-6)

tert-Butyl (2-(2-hydroxyethoxy)ethyl)carbamate(cas: 139115-91-6) belongs to ethers.The C-O bonds that comprise simple ethers are strong. Product Details of 139115-91-6 They are unreactive toward all but the strongest bases. Although generally of low chemical reactivity, they are more reactive than alkanes.

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