Tag: 400-500

In 2022,New Journal of Chemistry included an article by Zhou, Qian-hua; Pan, Ming-yue; He, Qi; Tang, Qian; Chow, Cheuk-fai; Gong, Cheng-bin. Safety of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline. The article was titled 《Electrochromic behavior of fac-tricarbonyl rhenium complexes》. The information in the text is summarized as follows:

This paper aims to investigate the electrochromic properties of tricarbonyl rhenium complexes. Using 4,7-diphenylphenanthroline (L1) and 4,7-di(4-substituted)-1,10-phenanthroline (L2-L5) as bidentate ligands, tricarbonyl rhenium complexes, fac-Re(CO)3(Lx)Cl (x = 1-5), were synthesized and characterized by IR spectroscopy, 1H NMR, 13C NMR, and high resolution mass spectrometry. Their stereochem. was investigated by single crystal x-ray diffraction. Theor. HOMO and LUMO charge distributions of fac-Re(CO)3(Lx)Cl were calculated by d. functional theory calculations Their electrochem. and electrochromic properties were studied by cyclic voltammetry, UV-visible spectroscopy and chronoamperometry. All fac-Re(CO)3(Lx)Cl complexes underwent a quasi-reversible reduction-oxidation process and an anodic peak at 1.3 V vs. Ag/Ag+. Electrochromic devices based on fac-Re(CO)3(Lx)Cl exhibited good electrochromic performance such as an obvious change in color from bleached yellow state to colored green state (a challenging electrochromic color), rapid response time of <3 s, moderate optical contrast and coloration efficiency, and good switching stability (fac-Re(CO)3(L2)Cl retained 95.2% of its initial optical contrast after 2400 electrochromic switching cycles). The fac-Re(CO)3(L2)Cl with an electron-donating group (-OCH3) at its para-position exhibited better performance including good switching stability, a higher optical contrast and a significant change in color than the unsubstituted, -CH3 substituted, -COOCH3 substituted and Br-substituted analogs. In the experiment, the researchers used 4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9Safety of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline)

4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.Safety of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Significant Enhancement of Two-Photon Excited Fluorescence in Water-Soluble Triphenylamine-Based All-Organic Compounds》 was written by Gong, Yu; Bi, Xiangdong; Chen, Nikki; Forconi, Marcello; Kuthirummal, Narayanan; Teklu, Alem; Gao, Bo; Koenemann, Jacob; Harris, Nico; Brennan, Christian; Thomas, Marisa; Barnes, Taylor; Hu, Ming. Reference of Tris(4-bromophenyl)amineThis research focused ontwo photon absorption fluorescence triphenylamine protein complex. The article conveys some information:

Understanding water-soluble and environmentally friendly two-photon absorption (TPA) mols. benefits the design of superior organic complexes for biomedical, illumination, and display applications. The authors designed two triphenylamine-based all-organic compounds and explored the mechanism of enhanced TP fluorescence in water solutions for potential applications. Exptl., adding protein into the authors′ TPA mol. solution can drastically boost the TP fluorescence. Numerical simulations reveal that the TPA mols. prefer to dock inside the protein complex. The authors hypothesize that the interaction between the authors′ triphenylamine-based all-organic compounds and H2O mols. lead to nonradiative decay processes, which prevent strong TP fluorescence in the water solution Therefore, the protection by, for example, protein mols. from such interactions can be a universal strategy for superior functioning of organic TPA mols. Further experiments and numerical simulations support the authors′ hypothesis. The present study may facilitate the design of superior water-soluble and environmentally friendly superior organic complexes. After reading the article, we found that the author used Tris(4-bromophenyl)amine(cas: 4316-58-9Reference of Tris(4-bromophenyl)amine)

In general, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Reference of Tris(4-bromophenyl)amine

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ma, Yucheng; Zhuang, Zeyan; Xing, Longjiang; Li, Jianqing; Yang, Zhiwen; Ji, Shaomin; Hu, Rong; Zhao, Zujin; Huo, Yanping; Tang, Ben Zhong published an article in 2021. The article was titled 《The AIE-Active Dual-Cationic Molecular Engineering: Synergistic Effect of Dark Toxicity and Phototoxicity for Anticancer Therapy》, and you may find the article in Advanced Functional Materials.Product Details of 4316-58-9 The information in the text is summarized as follows:

The development of anticancer therapy is significant to human health but remains a huge challenge. Photodynamic therapy (PDT), inducing the synergistic mitochondrial dysfunction in cancer cells is a promising approach but suffer from the low efficiency in hypoxic microenvironment and deep-seated tumors. Herein, to improve the outcomes of PDT for cancer treatment, a series of red fluorophores consisting of dual-cationic triphenylphosphonium-alkylated pyridinium and (substituted) triphenylamine are prepared as organelle-targeting antitumor photosensitizers (PSs) with aggregation-induced emission characteristics. These PSs can selectively accumulate at the mitochondria or lysosomes of cancer cells with both dark- and photo-cytotoxicity, making them possess excellent killing effect on cancer cells and efficient inhibition of tumor growth in living mice. This study brings about new insight into the development of powerful cancer treatment. The results came from multiple reactions, including the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Product Details of 4316-58-9)

In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Product Details of 4316-58-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dobinson, Frank; Bailey, Philip published an article in 1960, the title of the article was Effect of solvents on the initial ozone attack on polycyclic aromatic compounds.Related Products of 41819-13-0 And the article contains the following content:

cf. CA 51, 11305c. Ozonization of 9,10-dibromoanthracene (I) in MeOH-CH2Cl2 followed by an oxidative work-up with H2O2 yielded 79-80% anthraquinone (II), with absorption of 2 mole equivalents of O3 and release of some mol. Br. Ozonolysis of I in CH2Cl2 followed by the same procedure gave only 18-22% I and 75-82% 3,6-dibromobenzene-1,2,4,5-tetracarboxylic acid, m. above 300° (CA 16, 3642), converted by catalytic dehalogenation to authentic pyromellitic acid. The major attack on CH2Cl2 appeared to involve essentially a 4-center ozone attack, producing a 5-membered ring intermediate. After the primary attack at the 1,2-bond the reaction continued at the 3,4-,5,6-, and 7,8-bonds. The presence of the 9,10-dibromo groups inhibited a 4-center attack on the middle ring. In the presence of MeOH the ozone mol. was polarized by the solvent and made an ionic attack at the reactive 9-position leading to formation of an intermediate sigma complex, finally giving I. The competition between ionic and 4-center attack of ozone appeared to be quite general and had potential utility in organic synthesis. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Related Products of 41819-13-0

3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas:41819-13-0) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Related Products of 41819-13-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hopff, H.; Doswald, P.; Manukian, B. K. published an article in 1961, the title of the article was Pyromellitic and cumidic acid derivatives.Related Products of 41819-13-0 And the article contains the following content:

1,2,4,5,3,6-Cl2(ClCH2)2C6Me2 (4.1 g.) in 140 cc. CCl4 treated 2 hrs. at 60-70° with stirring with a moderate stream of Cl while being irradiated with a 750-w. lamp, treated an addnl. 0.5 hr. with Cl without heating, and evaporated yielded 2.2 g. 1,4-Cl2C6(CH2Cl)4 (I), m. 221-2° (C6H6). p-Me4C6Br2 (II) (5 g.) in 50 cc. CCl4 treated dropwise during 0.5 hr. with 11 g. Br in 10 cc. CCl4, irradiated towards the end of the Br addition with a 750-w. lamp until decolorized, cooled, and filtered yielded 9.5 g. 1,4-Br2C6(CH2Br)4 (III), m. 262-3° (CHCl3). I (1 g.) in 45 cc. absolute MeOH refluxed 62 hrs. with 0.58 g. Na in 45 cc. absolute MeOH, concentrated to half-volume, poured onto ice, diluted with 200 cc. H2O, and filtered yielded 0.65 g. 1,4-Cl2C6(CH2OMe)4, m. 103-4° (MeOH). III (1.29 g.), 0.55 g. Na, and 100 cc. absolute MeOH refluxed 62 hrs. gave similarly 0.66 g. 1,4-Br2C6(CH2OMe)4, m. 113-14° (MeOH). I (1 g.) and 2.3 g. KOAc in 150 cc. AcOH refluxed 62 hrs., concentrated to half-volume, and poured onto ice gave 1.2 g. 1,4-Cl2C6(CH2OAc)4, m. 192-3° (Me2CO). II (6.1 g.), 5 g. KOAc, and 150 cc. AcOH refluxed 27 hrs. yielded 4.1 g. 1,4-Br2C6(CH2OAc)4, m. 205-6° (C6H6-Me2CO). I (1 g.), 75 cc. 65% HNO3, and 100 mg. Ag vanadate refluxed 22 hrs., concentrated, treated in 75 cc. 65% HNO3 30 hrs. with a stream of air, and evaporated, the residue treated with hot 2N NaHCO3, boiled with C, filtered hot, cooled, acidified with concentrated HCl, and extracted with Et2O, the extract worked up and concentrated, and the residue treated 2 hrs. at room temperature with CH2N2-Et2O gave 412 mg. 1,4-Cl2C6(CO2Me)4, m. 176-7° (Me2CO). II (6.5 g.) and 125 cc. 25% HNO3 heated during 6 hrs. to 175°, kept 3 hrs. at 175°, cooled, filtered, concentrated to 1/3 volume, and cooled again gave 5.9 g. 1,4-Br2C6(CO2H)4 (IV), m. from about 245° (decomposition) (H2O). IV in MeOH-Et2O with CH2N2-Et2O gave the tetra-Me ester (V) of IV, m. 190-1° (MeOH). IV sublimed at about 200° in vacuo gave the dianhydride, lemon-yellow, m. 270-5° (decomposition). II (1 g.) refluxed 12 hrs. with 200 mg. Na vanadate and 50 cc. 65% HNO3, evaporated, treated 12 hrs. with 50 cc. 65% HNO3, processed in the usual manner, and the product treated with CHN2 gave 430 mg. V, m. 191°. Dinitrodurene (20 g.) in 500 cc. hot EtOH treated at 70° with 70 g. Na2S and 9 g. S in 200 cc. H2O, stirred 6 hrs. at about 75°, kept at room temperature overnight, concentrated, diluted with H2O, cooled, and filtered, the residue triturated with hot dilute HCl, filtered, and basified with warm NH4OH gave 15.9 g. 1-nitro-4-aminodurene (VI), m. 161° (CH2Cl2-MeOH). VI (5.82 g.) in 20 cc. 100% HF treated with 2.07 g. NaNO2 in portions, warmed to room temperature, concentrated, diluted with 10 cc. H20, and filtered gave 4.35 g. 4-nitrofluorodurene (VII), m. 96-7° (EtOH and sublimed). Diaminodurene (1 g.) in 10 cc. 100% HF diazotized with 0.91 g. NaNO2 gave 0.86 g. duroquinone, m. 112-13° (MeOH). VII (4.4 g.) and 75 cc. 25% HNO3 heated 2 hrs. at 180° and 5 hrs. at 180-99° in an autoclave, cooled, vented, basified, and filtered, the filtrate concentrated to 1/3 volume, acidified with concentrated HCl, and evaporated, the residue extracted with Et,O, and the extract worked up gave a product which treated with CH2N2-Et2O yielded a methyl-1-nitro-4-fluorobenzenetricarboxylic acid tri-Me ester, m. 93° (MeOH). The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Related Products of 41819-13-0

3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas:41819-13-0) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Related Products of 41819-13-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Philippi, Ernst; Seka, Reinhard; Robinson, Lilly published an article in 1922, the title of the article was Mellitic acid, pyromellitic acid and their formation upon the oxidation of coal. IV. Synthesis of substituted pyromellitic acids.Product Details of 41819-13-0 And the article contains the following content:

Nitration of 1,4,2,5-C6H2Me2Et2 gave a poor yield of 1,4-dinitro-2,5-dimethyl-3,6-diethyl- benzene, yellow, m. 100°. Nitration of 1,4,2,5-C6H2Me2EtAc with 5 parts HNO3 and subsequent oxidation at 160-70° gave a mononitro derivative of B, while if 10-12 parts HNO3 are used, a dinitro derivative is formed, yellow powder, m. 190-200° decomposition 1,4-Dibromo-2,5-dimethyl-3,6-diethylbenzene is obtained by dissolving C6H2Me2Et2 in ligroin and adding HNO3 and then S2Br2, needles, m. 81-2°. On oxidation with HNO3 at 140-60° in a sealed tube, 1,4-dibromo-2,5-dimethylbenzene-3,6-diacetic acid is formed, needles, decomposition about 180°; there also results 1,4-dibromo-2,5-dimethylbenzene-3,6 diketocarboxylic acid, needles, m. 232°; and dibromopyromellitic acid, decompose 230°. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Product Details of 41819-13-0

3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas:41819-13-0) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Product Details of 41819-13-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kolsaker, Per; Bailey, Philip S.; Dobinson, Frank; Kumar, Baldev published an article in 1964, the title of the article was Ozonation of 9,10-dihaloanthracenes.Product Details of 41819-13-0 And the article contains the following content:

Ozonation of 9,10-dibromoanthracene gave anthraquinone, 1,4-dibromo-2,3-naphthalenedicarboxylic acid, and 3,6-dibromo-1,2,4,5-benzenetetracarboxylic acid (dibromopyromellitic acid). Approx. 2 moles mol. oxygen was evolved per mole of anthraquinone produced when 2 equivalents or less of ozone was used. Bromine was also a product and reacted with ozone when more than 2 equivalents was employed. There is a definite, though not so great as originally reported, solvent effect involving the competition between atom and bond attack of ozone. Similar results were obtained with 9,10-dichloroanthracene, except that there was little, if any, solvent effect. Mechanisms are discussed. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Product Details of 41819-13-0

3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas:41819-13-0) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Product Details of 41819-13-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

On December 13, 2019, Xiao, Yi; Shi, Lihan; Huang, Hongmei; Li, Shiye; Zhang, Min; Yin, Dulin; Mao, Liqiu published a patent.Product Details of 41819-13-0 The title of the patent was Preparation method of Fe-MOFs nanomaterial containing ionic liquids and its application in adsorption of methylene blue in cationic dye wastewater. And the patent contained the following:

The invention relates to a preparation method of Fe-MOFs nanomaterial containing ionic liquids and its application in adsorption of methylene blue in cationic dye wastewater, the nanomaterial has excellent adsorption performance on cationic dye methylene blue. The preparation method comprises the following steps: using iron salt, carboxylic acid ligand (triphthalic acid), and phenanthroline as raw materials, using imidazole ionic liquid as template, carrying out hydrothermal reaction to synthesize Fe-MOFs nanomaterial. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Product Details of 41819-13-0

The Article related to iron mof nanomaterial methylene blue adsorption cationic dye wastewater, Placeholder for records without volume info and other aspects.Product Details of 41819-13-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Berglund, Richard A.; Kreilein, Matthew M. published an article in 2006, the title of the article was Ozone.COA of Formula: C10H4Br2O8 And the article contains the following content:

Synthesis, properties, handling and applications of ozone in ozonization of alkenes, alkynes, aromatic compounds, acetals and heterocyclic compounds were reviewed. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).COA of Formula: C10H4Br2O8

The Article related to review ozone oxidant alkene alkyne ozonization safety, Inorganic Chemicals and Reactions: Reviews and other aspects.COA of Formula: C10H4Br2O8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

On June 23, 2020, Nara, Mayuko; Orita, Ryoji; Ishige, Ryohei; Ando, Shinji published an article.Reference of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid The title of the article was White-Light Emission and Tunable Luminescence Colors of Polyimide Copolymers Based on FRET and Room-Temperature Phosphorescence. And the article contained the following:

Thermally stable copolyimide (CoPI) films exhibiting high optical transparency and room-temperature phosphorescence (RTP) were prepared by copolymerizing fluorescent dianhydride and brominated phosphorescent dianhydride with an alicyclic diamine. The CoPI films underwent a 5 wt % degradation at a temperature higher than 349°C and exhibited dual fluorescent and phosphorescent emissions owing to their efficient Forster resonance energy transfer from the fluorescent to phosphorescent dianhydride moieties in the main chains, followed by an intersystem crossing from the singlet to triplet state of the latter moiety atoms. The CoPIs displayed bright RTP under a vacuum with various colors produced when adjusting the copolymerization ratio. CoPI with 5 mol % phosphorescent moiety (CoPI-05) emitted white light with high optical transparency owing to the suppression of the PI chain aggregation that causes a yellowish coloration. The copolymerization of fluorescent and phosphorescent PI moieties can control the photoluminescent properties of PI films and is applicable to color-tunable solid-state emitters, ratiometric oxygen sensors, and solar-spectrum converters. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Reference of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid

The Article related to emission tunable luminescence color polyimide copolymer, Plastics Fabrication and Uses: Plastic Product Uses and other aspects.Reference of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary