Category: 74029-40-6

In 2012,Advanced Functional Materials included an article by Yan, Mei; Ge, Lei; Gao, Weiqiang; Yu, Jinghua; Song, Xianrang; Ge, Shenguang; Jia, Zhiyong; Chu, Chengchao. Recommanded Product: 74029-40-6. The article was titled 《Electrogenerated Chemiluminescence from a Phenyleneethynylene Derivative and its Ultrasensitive Immunosensing Application Using a Nanotubular Mesoporous Pt-Ag Alloy for Signal Amplification》. The information in the text is summarized as follows:

Electrogenerated chemiluminescence (ECL) of a novel phenyleneethynylene derivative [4,4′-(2,5-dimethoxy-1,4-phenylene)bis(ethyne-2,1-diyl) dibenzoic acid; P-acid] possessing carboxylic acid groups at the para positions in aqueous solutions and its first immunosensing application were studied. Nanotubular mesoporous Pt-Ag alloy nanoparticles are first used to fabricate the ECL immunosensor as a signal amplification carrier. Absorption, photoluminescence, cyclic voltammetry, SEM, TEM, and electrochem. impedance spectroscopy were used as powerful tools to characterize P-acid, Pt-Ag alloy nanoparticles, and the fabrication process of the immunosensor. P-acid exhibits two ECL peaks at -1.07 (ECL-1) and 0.64 (ECL-2) V in air-saturated pH 7.4, 0.1 M PBS containing 0.1 M KCl during the cyclic sweep between 1.51 and -2.67 V at 0.1 V s-1; the ECL mechanism of these two ECL peaks is demonstrated. The electron-transfer reaction between electrochem. oxidized P-acid and tri-n-propylamine (TPrA) radical cation is also demonstrated to produce high ECL emissions and used to develop an ultrasensitive ECL immunosensor. In addition, a Pt-Ag alloy nanoparticles amplification carrier for protein ECL anal. is applied for improvement of the detection sensitivity. Thus, this ECL immunosensor exhibits high sensitivity, good reproducibility, rapid response, and long-term stability. The results came from multiple reactions, including the reaction of 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Recommanded Product: 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. They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however. Recommanded Product: 74029-40-6

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

Safety of 1,4-Diethynyl-2,5-dimethoxybenzeneOn May 21, 2013 ,《Conjugated Porous Polymers For TNT Vapor Detection》 appeared in ACS Macro Letters. The author of the article were Novotney, Jennifer L.; Dichtel, William R.. The article conveys some information:

A conjugated porous polymer (CPP) that exhibits fluorescence quenching when exposed to TNT vapor was synthesized via a Sonaogashira cross-coupling reaction. Two polymerization solvents, DMF and PhMe, and two activation procedures, evacuation and lyophilization, were evaluated to optimize the response of the CPP to TNT vapor. Key differences in surface area and absorption were seen as a function of polymerization solvent and activation procedure. The polymer synthesized in DMF and activated by lyophilization had the highest surface area and the strongest response to TNT vapor. This paper demonstrates the importance of growth and activation conditions in optimizing the porosity and sensing performance of CPPs. In the experiment, the researchers used many compounds, for example, 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 lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Safety of 1,4-Diethynyl-2,5-dimethoxybenzene

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

Ren, Huimin; Liu, Chao; Ding, Xu; Fu, Xianzhang; Wang, Hailong; Jiang, Jianzhuang published an article on February 1 ,2022. The article was titled 《High Fluorescence Porous Organic Cage for Sensing Divalent Palladium Ion and Encapsulating Fine Palladium Nanoparticles》, and you may find the article in Chinese Journal of Chemistry.Electric Literature of C12H10O2 The information in the text is summarized as follows:

Comprehensive Summary : Porous organic cages (POCs) as an innovative type of porous mol. materials enable multifunctional applications. Herein, a fluorescence POC (denoted as 1) has been constructed by means of 5,5′-((2,5-dimethoxy-1,4-phenylene)bis(ethyne-2,1-diyl))diisophthalaldehyde condensing with cyclohexanediamine enantiomer with the aid of trifluoroacetic acid. 1 exhibits the permanent void and prominent fluorescence with relative quantum yield of 73% confirmed by gas sorption and emission experiments, resp. Moreover, this organic cage is capable of sensing diavalent Pd2+ according to the fluorescence response to the addition of various metal ions. The dispersion of 1 in methanol containing palladium acetate was stirred at 25 °C and then 80 °C to reduce Pd2+ ions into nanoparticles (NPs), leading to the composite (Pd@1) composed of fine Pd NPs with the size of ca. 1.8 nm. The catalytic nature of Pd@1 over NaBH4 promoted the degeneration of nitrobenzene and congo red. This work introduces one new case of POCs with versatile properties and functions, including ion fluorescence recognition, fine Pd NPs stabilizer, and gas adsorption, enriching the family of POC-based materials. In the experiment, the researchers used 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.Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. Electric Literature of C12H10O2 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

《β-1,3-glucan (schyzophyllan) can act as a one-dimensional host for creating chirally twisted poly(p-phenylene ethynylene)》 was written by Numata, Munenori; Fujisawa, Tomohisa; Li, Chun; Haraguchi, Shunichi; Ikeda, Masato; Sakurai, Kazuo; Shinkai, Seiji. Synthetic Route of C12H10O2 And the article was included in Supramolecular Chemistry in 2007. The article conveys some information:

It has been demonstrated that a chiral, insulated poly(p-phenylene ethynylene) (PPE) nano-wire can be created by a polymer wrapping method utilizing natural β-1,3-glucan polysaccharide schizophyllan (SPG). Spectroscopic and microscopic measurements have revealed that PPE adopts a rigid conformation and exists as one piece in the helical hollow constructed by two SPG chains. Moreover, the inherent helical structure of SPG can induce the chiral twisting of the insulated PPE backbone. It is believed that the present system is really applicable for designing novel chiral sensors based on PPE. In the experimental materials used by the author, we found 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Synthetic Route of C12H10O2)

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

In 2015,Journal of Chemistry included an article by Basinger, Corinne A.; Sullivan, Kaitlin; Siemer, Sarah; Oehrle, Stuart; Walters, Keith A.. Application of 74029-40-6. The article was titled 《Synthesis and preliminary characterization of a PPE-type polymer containing substituted fullerenes and transition metal ligation sites》. The information in the text is summarized as follows:

A substituted fullerene was incorporated into a PPE-conjugated polymer repeat unit. This subunit was then polymerized via Sonogashira coupling with other repeat units to create polymeric systems approaching 50 repeat units (based on GPC characterization). Bipyridine ligands were incorporated into some of these repeat units to provide sites for transition metal coordination. Photophys. characterization of the absorption and emission properties of these systems shows excited states located on both the fullerene and aromatic backbone of the polymers that exist in a thermally controlled equilibrium Future work will explore other substituted polyaromatic systems using similar methodologies. 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: 74029-40-6Application of 74029-40-6) 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. Application of 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

Yang, Chunlei; Wang, Xiu; Shen, Lei; Deng, Wenping; Liu, Haiyun; Ge, Shenguang; Yan, Mei; Song, Xianrang published an article in Biosensors & Bioelectronics. The title of the article was 《An aldehyde group-based P-acid probe for selective fluorescence turn-on sensing of cysteine and homocysteine》.HPLC of Formula: 74029-40-6 The author mentioned the following in the article:

A highly sensitive and selective turn on fluorescent probe P-acid-aldehyde (P-CHO) is developed for the determination of cysteine (Cys) and homocysteine (Hcy). The probe is designed and synthesized by incorporating the specific functional group aldehyde group for thiols into a stable p-conjugated material 4,4′-(2,5-dimethoxy-1,4-phenylene) bis(ethyne-2,1-diyl) dibenzoic acid (P-acid). The probe fluorescence is quenched through donor photoinduced electron transfer (d-PET) between the fluorophore (P-acid) and the recognition group (aldehyde group). In the presence of thiols, Cys and Hcy can selectively react with aldehyde group of the probe because the inhibition of d-PET between fluorophore and recognition group. Therefore, a turn-on fluorescent sensor was established for the fluorescence recovery. Under the optimized conditions, the fluorescence response of probe is directly proportional to the concentration of Cys in the range of 4-95 nM L-1, with a detection limit 3.0 nM. In addition, the sensing system exhibits good selectively toward Cys and Hcy in the presence of other amino acids. It has been successfully applied for bioimaging of Cys and Hcy in living cells with low cell toxicity. After reading the article, we found that the author 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.HPLC of Formula: 74029-40-6Although 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

Khan, Muhammad S.; Al-Mandhary, Muna R. A.; Al-Suti, Mohammed K.; Corcoran, Timothy C.; Al-Mahrooqi, Yaqoub; Attfield, J. Paul; Feeder, Neil; David, William I. F.; Shankland, Kenneth; Friend, Richard H.; Koehler, Anna; Marseglia, Elisabeth A.; Tedesco, Emilio; Tang, Chiu C.; Raithby, Paul R.; Collings, Jonathan C.; Roscoe, Karl P.; Batsanov, Andrei S.; Stimson, Lorna M.; Marder, Todd B. published an article on January 31 ,2003. The article was titled 《Synthesis and optical characterisation of platinum(II) poly-yne polymers incorporating substituted 1,4-diethynylbenzene derivatives and an investigation of the intermolecular interactions in the diethynylbenzene molecular precursors》, and you may find the article in New Journal of Chemistry.Name: 1,4-Diethynyl-2,5-dimethoxybenzene The information in the text is summarized as follows:

A series of 1,4-diethynylbenzene derivatives, H-CC-R-CC-H with R = C6H3NH2 (I), C6H3F (II), C6H2F2-2,5 (III), C6F4 (IV), C6H2(OMe)2-2,5 (V) and C6H2(OC8H17-n)2-2,5 (VI) were synthesized and their crystal structures were determined by single crystal (I, II, III, IV) or powder (V, VI) x-ray diffraction. The CCH···πCC hydrogen bonds dominating structure H-CC-R-CC-H are gradually replaced by CC-H···F ones with the increase of fluorination (II → IV), or completely replaced by CCH···N and NH···πCC bonds in I, and CCH···O in V and VI. The related platinum-based polymers, trans-[-Pt(PnBu3)2-CC-R-CC-]n (R = as above and C6H4,) were prepared and characterized by spectroscopic methods and thermogravimetry, which show that the amino and methoxy derivatives have lowest thermal stability whereas the fluorinated ones exhibit increasing thermal stability with increasing fluorination. Optical spectroscopic measurements reveal that substituents on the aromatic spacer group do not create strong donor-acceptor interactions along the rigid backbone of the organometallic polymers. 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: 74029-40-6Name: 1,4-Diethynyl-2,5-dimethoxybenzene) was used in this study.

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. Name: 1,4-Diethynyl-2,5-dimethoxybenzene 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

In 2021,Cailiao Kexue Yu Gongcheng Xuebao included an article by Yang, Can; Liu, Yang; Fu, Weiqiang; Tong, Bin; Cai, Zhengxu; Dong, Yuping; Shi, Jianbing. Related Products of 74029-40-6. The article was titled 《Preparation of poly(silicon-phenyl-arylacetylene) resin by polymerizing dialkynylarylenes and phenylsilane catalyzed by alkali metal hydroxide》. The information in the text is summarized as follows:

A new method for preparing silicon-containing Ph arylacetylene resin (SPAR) has been developed using aromatic dialkyne derivatives and 1,4-bis(dimethylsilyl) benzene as raw materials in a one-step reaction in air. In addition, NaOH, a nontransition metal catalyst, was used to achieve high yield polymerization The exptl. conditions affecting polymerization, including monomer species, catalyst dosage, polymerization time, reaction solvent and temperature were investigated. Gel permeation chromatog., NMR and Fourier transform IR spectroscopy were used to determine the mol. weight and structure of the SPARs. Thermogravimetric anal. revealed their thermal stability, and the results indicated that most of them had good thermal stability. This polymerization method that employs simple preparation method, less expensive catalysts, and less complicated posttreatment method will provide an efficient preparation of functional SPARs. In the experiment, the researchers used 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

The author of 《Rigid-Strut-Containing Crown Ethers and [2]Catenanes for Incorporation into Metal-Organic Frameworks》 were Zhao, Yan-Li; Liu, Lihua; Zhang, Wenyu; Sue, Chi-Hau; Li, Qiaowei; Miljanic, Ognjen S.; Yaghi, Omar M.; Stoddart, J. Fraser. And the article was published in Chemistry – A European Journal in 2009. Related Products of 74029-40-6 The author mentioned the following in the article:

To introduce crown ethers into the struts of metal-organic frameworks (MOFs), general approaches were developed for the syntheses of bis(4-carboxyphenylethynyl)-substituted dibenzo[30]crown-10 (DB30C10DA), di-2,3-naphtho[30]crown-10 (DN30C10DA), bisparaphenylene[34]crown-10 (BPP34C10DA), and 1,5-naphthoparaphenylene[36]crown-10 (NPP36C10DA). These novel crown ethers not only retain the characteristics of their parent crown ethers since they can both bind cationic guests and serve as templates for making mech. interlocked mols. (MIMs), such as catenanes and rotaxanes, but they also present coordination sites to connect with secondary building units (SBUs) in MOFs. The binding behavior of BPP34C10DA with 1,1′-dimethyl-4,4′-bipyridinium bis(hexafluorophosphate) (DMBP·2PF6) was studied by UV/visible, fluorescence, and NMR spectroscopic techniques. The crystal superstructure of the complex DMBP·2PF6⊂ BPP34C10DA was determined by x-ray crystallog. The NPP36C10DA-based [2]catenane (H2NPP36C10DC-CAT·4PF6) and the BPP34C10DA-based [2]catenane (H2BPP34C10DC-CAT·4PF6) were prepared in DMF at room temperature by the template-directed clipping reactions of the planarly chiral NPP36C10DA and BPP34C10DA with 1,1′-[1,4-phenylenebis(methylene)]di-4,4′-bipyridin-1-ium bis(hexafluorophosphate) and 1,4-bis(bromomethyl)benzene, resp. The crystal structure of the di-Me ester (BPP34C10DE-CAT·4PF6) of the [2]catenane H2BPP34C10DC-CAT·4PF6 was studied by x-ray crystallog., which revealed racemic R and S isomers with planar chirality present in the crystal in a 1:1 ratio. These crown ether based struts serve as excellent organic ligands to bind with transition metal ions in the construction of MOFs: the crown ethers BPP34C10DA and NPP36C10DA in the presence of Zn(NO3)2·4 H2O afforded the MOF-1001 and MOF-1002 frameworks, resp. The crystal structures of MOF-1001 and MOF-1002 are both cubic and display Fm3̅m symmetry. The unit cell parameter of the metal-organic frameworks is a 52.9345 Å. Since such MOFs, containing electron-donating crown ethers are capable of docking incoming electron-accepting substrates in a stereoelectronically controlled fashion, the present work opens a new access to the preparation and application of MOFs.1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Related Products of 74029-40-6) was used in this study.

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

《Efficient Sensing of Explosives by Using Fluorescent Nonporous Films of Oligophenyleneethynylene Derivatives Thanks to Optimal Structure Orientation and Exciton Migration》 was published in Chemistry – A European Journal in 2014. These research results belong to Caron, Thomas; Pasquinet, Eric; van der Lee, Arie; Pansu, Robert B.; Rouessac, Vincent; Clavaguera, Simon; Bouhadid, Myriam; Serein-Spirau, Francoise; Lere-Porte, Jean-Pierre; Montmeat, Pierre. Related Products of 74029-40-6 The article mentions the following:

The fluorescence of thin films of a diimine-substituted phenyleneethynylene compound can be efficiently quenched by nitroarom. vapors, which is not the case for the unsubstituted parent compound Thin-film porosity is usually considered to be an essential factor for efficient quenching, but in the present case the origin of the quenching is completely different, as both films are nonporous and hermetic to 2,4-dinitrotoluene (DNT) mols. The mol. organization in the two crystallized thin films offers a low level of π stacking for both compounds, but the orientation of the phenylenethynylene fluorophore differs markedly with respect to the surface of the films. For the substituted compound, the fluorophore is almost parallel to the surface, thus making it readily available to mols. of a nitroarom. quencher. This rationale is also observed in the case of a related compound bearing methoxy side chains instead of the long octyloxy moieties. Fluorescence-lifetime experiments show that the efficient quenching process in the nonporous crystallized films of the substituted compound is due to a fast (<70 ps) diffusion of excitons from the bulk of the film toward the surface where they are quenched, thus providing evidence of antenna effects. The experimental part of the paper was very detailed, including the reaction process of 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.Although ethers resist hydrolysis, they are cleaved by hydrobromic acid and hydroiodic acid. Hydrogen chloride cleaves ethers only slowly. Related Products of 74029-40-6

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