Category: 74029-40-6

Xie, Zuoti; Diez Cabanes, Valentin; Van Nguyen, Quyen; Rodriguez-Gonzalez, Sandra; Norel, Lucie; Galangau, Olivier; Rigaut, Stephane; Cornil, Jerome; Frisbie, C. Daniel published their research in ACS Applied Materials & Interfaces on December 1 ,2021. The article was titled 《Quantifying Image Charge Effects in Molecular Tunnel Junctions Based on Self-Assembled Monolayers of Substituted Oligophenylene Ethynylene Dithiols》.HPLC of Formula: 74029-40-6 The article contains the following contents:

A number of factors contribute to orbital energy alignment with respect to the Fermi level in mol. tunnel junctions. Here, we report a combined exptl. and theor. effort to quantify the effect of metal image potentials on the HOMO to Fermi level offset, εh, for mol. junctions based on self-assembled monolayers (SAMs) of oligophenylene ethynylene dithiols (OPX) on Au. Our exptl. approach involves the use of both transport and photoelectron spectroscopy to extract the offsets, εhtrans and εhUPS, resp. We take the difference in these quantities to be the image potential energy eVimage. In the theor. approach, we use d. functional theory (DFT) to calculate directly eVimage between pos. charge on an OPX mol. and the neg. image charge in the Au. Both approaches yield eVimage ~-0.1 eV per metal contact, meaning that the total image potential energy is ~-0.2 eV for an assembled junction with two Au contacts. Thus, we find that the total image potential energy is 25-30% of the total offset εh, which means that image charge effects are significant in OPX junctions. Our methods should be generally applicable to understanding image charge effects as a function of mol. size, for example, in a variety of SAM-based junctions. In the experiment, the researchers used 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6HPLC of Formula: 74029-40-6)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Ethers do have nonbonding electron pairs on their oxygen atoms, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. HPLC of Formula: 74029-40-6 The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.

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

The author of 《Quantum Dots Arrangement and Energy Transfer Control via Charge-Transfer Complex Achieved on Poly(Phenylene Ethynylene)/Schizophyllan Nanowires》 were Shiraki, Tomohiro; Haraguchi, Shuichi; Tsuchiya, Youichi; Shinkai, Seiji. And the article was published in Chemistry – An Asian Journal in 2009. Category: ethers-buliding-blocks The author mentioned the following in the article:

Assemblies of organic and inorganic compounds in the nanoscale region have contributed to the development of novel functional materials toward future applications, including sensors and opto-electronics. The authors succeed in fabricating hybrid nanowires composed of a conjugated polymer and semiconductor quantum dots (QDs) by a supramol. assembly technique. The 1-dimensional fashion of the nanowire structure was obtained by the polymer wrapping of cationic poly(phenylene ethynylene) (PPE) with helix-forming polysaccharide schizophyllan (SPG). The electrostatic interaction between cationic PPE and anionic QDs affords the nanowires decorated with QDs. Upon addition of an acceptor mol., tetranitrofluorenone (TNF), the charge-transfer (CT) complex between PPE and TNF is formed, resulting in energy transfer from the QDs to PPE arising from the induced spectral overlap. Also, the employment of the conjugated polymer allows highly sensitive quenching of the QD’s emission by raising the transmission efficiency to the CT complexed electron deficient sites along the polymer backbone. In the experiment, the researchers used many compounds, for example, 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Category: ethers-buliding-blocks)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Category: ethers-buliding-blocksAlthough 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

Morin, Jean-Francois; Sasaki, Takashi; Shirai, Yasuhiro; Guerrero, Jason M.; Tour, James M. published their research in Journal of Organic Chemistry on December 7 ,2007. The article was titled 《Synthetic routes toward carborane-wheeled nanocars》.Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene The article contains the following contents:

A new set of p-carborane-wheeled aryleneethynylene nanovehicles, nanocars I and II, nanocaterpillar III and rotating trimer IV (R = 1-p-C2B10H11, X = CC, Q = [2,5-(n-PrO)2-1,4-C6H2CC]2) bearing carboranylethynyl units attached to a semirigid chassis were designed and prepared These mols. are expected to move in predetermined patterns on atomically smooth surfaces, depending on their specific configuration. In addition to this study using 1,4-Diethynyl-2,5-dimethoxybenzene, there are many other studies that have used 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene) was used in this study.

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Ethers do have nonbonding electron pairs on their oxygen atoms, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.

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

Related Products of 74029-40-6On May 15, 2009 ,《p-Diethynylbenzene-based molecular wires, Fe-CC-p-C6H2X2-CC-Fe [Fe = Fe(η5-C5Me5)(dppe)]: Synthesis, substituent effects and unexpected formation of benzodifuran complex》 appeared in Journal of Organometallic Chemistry. The author of the article were Matsuura, Yumi; Tanaka, Yuya; Akita, Munetaka. The article conveys some information:

P-diethynylbenzene-based mol. wires, [Fe]-CC-p-C6H2X2-CC-[Fe] (3; [Fe] = FeCp*(dppe)), were prepared from reactions of cyclopentadienyliron chloride with diethynylbenzenes and their wire-like performance is estimated from the KC and Vab values. Electron-donating substituents (X) improve the performance. The dinuclear benzodifuran complex 4 unexpectedly formed from the derivative with X = OH shows the performance comparable to 3. In the experimental materials used by the author, we found 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Related Products of 74029-40-6)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Related Products of 74029-40-6 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

《Ferrocenes Bearing Highly Extended π Systems with Nitrile, Nitro, and Dimethylamino End Groups》 was published in European Journal of Organic Chemistry in 2014. These research results belong to Krausse, Nico; Butenschoen, Holger. Formula: C12H10O2 The article mentions the following:

Oligophenylene-ethynylenes are a popular class of mol. wires for mol. electronics. Replacement of some, not all, of the 1,4-phenylene units by 1,1′-ferrocenylene moieties generates less rigid entities with a limited conformational flexibility. Within this concept, the syntheses of some 1,1′-disubstituted ferrocenes that bear arylethynyl or 4-(arylethynyl)phenyl substituents is presented. In contrast to related compounds with sulfur end groups that were prepared previously, the versions presented here have nitrile end groups, which, according to reported precedence, may serve as points of attachment to gold surfaces. A crystal structure anal. of an unusual diferrocenylethyne derivative is included. In addition, one representative with a push-pull disubstitution that has a nitro and a dimethylamino end group is presented. Many of the prepared compounds have been characterized by cyclic voltammetry.1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Formula: C12H10O2) was used in this study.

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.The C-O bonds that comprise simple ethers are strong. They are unreactive toward all but the strongest bases. Although generally of low chemical reactivity, they are more reactive than alkanes. Formula: C12H10O2

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

Li, Qiaowei; Zhang, Wenyu; Miljanic, Ognjen S.; Sue, Chi-Hau; Zhao, Yan-Li; Liu, Lihua; Knobler, Carolyn B.; Stoddart, J. Fraser; Yaghi, Omar M. published their research in Science (Washington, DC, United States) on August 14 ,2009. The article was titled 《Docking in Metal-Organic Frameworks》.SDS of cas: 74029-40-6 The article contains the following contents:

The use of metal-organic frameworks (MOFs) so far has largely relied on nonspecific binding interactions to host small mol. guests. The authors used long organic struts (2̃ nm) incorporating 34- and 36-membered macrocyclic polyethers as recognition modules in the construction of several crystalline primitive cubic frameworks that engage in specific binding in a way not observed in passive, open reticulated geometries. MOF-1001 is capable of docking paraquat dication (PQT2+) guests within the macrocycles in a stereoelectronically controlled fashion. This act of specific complexation yields quant. the corresponding MOF-1001 pseudorotaxanes, as confirmed by x-ray diffraction and by solid- and solution-state NMR spectroscopic studies performed on MOF-1001, its pseudorotaxanes, and their mol. strut precursors. A control experiment involving the attempted inclusion of PQT2+ inside a framework (MOF-177) devoid of polyether struts showed negligible uptake of PQT2+, indicating the importance of the macrocyclic polyether in PQT2+ docking. In the experimental materials used by the author, we found 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6SDS of cas: 74029-40-6)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.The C-O bonds that comprise simple ethers are strong. SDS of cas: 74029-40-6 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

Electric Literature of C12H10O2On November 28, 2012 ,《Trimethylsilyl-Terminated Oligo(phenylene ethynylene)s: An Approach to Single-Molecule Junctions with Covalent Au-C σ-Bonds》 appeared in Journal of the American Chemical Society. The author of the article were Hong, Wenjing; Li, Hui; Liu, Shi-Xia; Fu, Yongchun; Li, Jianfeng; Kaliginedi, Veerabhadrarao; Decurtins, Silvio; Wandlowski, Thomas. The article conveys some information:

A new and efficient approach using cleaving of trimethylsilyl groups to create covalent Au-C anchoring sites was developed for single-mol. junction conductance measurements. Employing the mech. controllable break junction (MCBJ) technique in liquid, the authors demonstrate the formation of highly conducting single mol. junctions of several OPE derivatives The created junctions are mech. stable and exhibit conductances around one order of magnitude higher than those of their dithiol analogs. Extended assembly and reaction times lead to oligomerization. Combined STM imaging and gap-mode Raman experiments provide structure evidence to support the formation of covalent Au-C contacts and further oligomerization. The experimental process involved the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Electric Literature of C12H10O2)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Although ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly. Electric Literature of C12H10O2

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

SDS of cas: 74029-40-6On November 5, 2021 ,《Butterfly-Like Triarylamines with High Hole Mobility and On/Off Ratio in Bottom-Gated OFETs》 appeared in Chemistry – A European Journal. The author of the article were Devibala, Panneerselvam; Balambiga, Balu; Mohamed Imran, Predhanekar; Bhuvanesh, Nattamai S. P.; Nagarajan, Samuthira. The article conveys some information:

Highly π-extended butterfly-shaped triarylamine dyads with aryleneethynylene spacer were constructed using an efficient synthetic route. These aryleneethynylene-bridged dyads were highly fluorescent and exhibited high HOMO levels, and low bandgaps, which are suitable for high-performance p-type OFETs. The field-effect transistors were fabricated through a solution-processable method and exhibited promising p-type performance with field-effect mobility up to 4.3 cm2/Vs and high Ion/off of 108 under ambient conditions. In the part of experimental materials, we found many familiar compounds, such as 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6SDS of cas: 74029-40-6)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. SDS of cas: 74029-40-6

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

In 2014,Angewandte Chemie, International Edition included an article by Wang, Fengyan; Liu, Zhang; Wang, Bing; Feng, Liheng; Liu, Libing; Lv, Fengting; Wang, Yilin; Wang, Shu. Safety of 1,4-Diethynyl-2,5-dimethoxybenzene. The article was titled 《Multi-Colored Fibers by Self-Assembly of DNA, Histone Proteins, and Cationic Conjugated Polymers》. The information in the text is summarized as follows:

The development of biomol. fiber materials with imaging ability has become more and more useful for biol. applications. Cationic conjugated polymers (CCPs) were used to construct inherent fluorescent microfibers with natural biol. macromols. (DNA and histone proteins) through the interfacial polyelectrolyte complexation (IPC) procedure. Isothermal titration microcalorimetry results show that the driving forces for fiber formation are electrostatic and hydrophobic interactions, as well as the release of counterions and bound water mols. Color-encoded IPC fibers were also obtained based on the co-assembly of DNA, histone proteins, and blue-, green-, or red- (RGB-) emissive CCPs by tuning the fluorescence resonance energy-transfer among the CCPs at a single excitation wavelength. The fibers could encapsulate GFP-coded Escherichia coli BL21, and the expression of GFP proteins was successfully regulated by the external environment of the fibers. These multi-colored fibers show a great potential in biomedical applications, such as biosensor, delivery, and release of biol. mols. and tissue engineering. The experimental process involved the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Safety of 1,4-Diethynyl-2,5-dimethoxybenzene)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.Ethers do have nonbonding electron pairs on their oxygen atoms, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Safety of 1,4-Diethynyl-2,5-dimethoxybenzene

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

《(Di-tert-butylphosphinylethyl)cyclopentadienylnickel Chelates with Alkyl, Alkenyl, Aryl, and Alkynyl Ligands: Hints to Cumulenylidene Resonance Forms》 was published in European Journal of Inorganic Chemistry in 2018. These research results belong to Kohser, Stefanie; Butenschoen, Holger. COA of Formula: C12H10O2 The article mentions the following:

Cyclopentadienylalkylphosphine chelate complexes were studied in depth for many transition metals, but to a much lesser extent for Ni. From earlier studies of cyclopentadienylalkylphosphine Ni chelates, a number of new alkyl, aryl, alkenyl, and alkynyl complexes, including some bearing functional groups, were prepared and fully characterized. These include for the 1st time di- and trimetallic complexes as well as compounds with a ferrocene unit as part of the extended π system. A number of quaternized 2-pyridylethynyl complexes are presented, for which cyclovoltammograms, NMR spectroscopic data, and DFT calculations provide hints to a significant contribution of cumulenylidene resonance forms. In the part of experimental materials, we found many familiar compounds, such as 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6COA of Formula: C12H10O2)

1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.COA of 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