Tag: 400-500

On February 15, 2017, Du, Shunfu; Ji, Chunqing; Xin, Xuelian; Zhuang, Mu; Yu, Xuying; Lu, Jitao; Lu, Yukun; Sun, Daofeng published an article.Synthetic Route of 41819-13-0 The title of the article was Syntheses, structures and characteristics of four alkaline-earth metal-organic frameworks (MOFs) based on benzene-1,2,4,5-tetracarboxylic acid and its derivative ligand. And the article contained the following:

Two new pillar-layered Ba(II)-based 3D frameworks and two new Ca(II)-based 3D supramol. frameworks, [Ba2(dbtec)(H2O)2]n (1), [Ca2(dbtec)(H2O)8]n (2), {[Ba2(H2btec)·H2O]·0.5H2O}n (3) and [Ca(H2btec)·H2O]n (4) (H4dbtec = 3,6-dibromobenzene-1,2,4,5-tetracarboxylic acid; H4btec = benzene-1,2,4,5-tetracarboxylic acid), were synthesized under similar reaction conditions and stoichiometry. Single crystal x-ray diffraction study reveals axial-orientation Br···π supramol. interactions exist in the crystal structure of 1, which keeps an 3D binodal network with the (32.412.510.62.72)(32.46.56.6)2 topol. Whereas in 2, intramol. and intermol. H-bonding interactions with the ligated water mols. promote the formation of 3D supramol. frameworks network. For 3, a new 3D 3-nodal network occurs in the structure and some rare coordination modes for the H4btec are observed There is a 2D double layer with the thickness of 7.60 Å in 4. In addition, besides the high thermal stability, the FTIR spectra, PXRD patterns and the photoluminescent of these compounds are also discussed. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Synthetic Route of 41819-13-0

The Article related to preparation crystal structure calcium barium dibromobenzenetetracarboxylate benzenetetracarboxylate mof, luminescence thermal stability calcium barium dibromobenzenetetracarboxylate benzenetetracarboxylate mof and other aspects.Synthetic Route of 41819-13-0

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

On December 31, 2012, Zhang, Liangliang; Guo, Jie; Meng, Qingguo; Pang, Haiduo; Chen, Zhen; Sun, Daofeng published an article.Formula: C10H4Br2O8 The title of the article was Two novel isostructural Ln(III) 3D frameworks supported by 3,6-dibromobenzene-1,2,4,5-tetracarboxylic acid and in situ generated oxalate: Syntheses, characterization and photoluminescent property. And the article contained the following:

Two isostructural lanthanide complexes, [Ln(dbtec)0.5(ox)0.5·3H2O]n, [Ln = Dy (1), Yb (2)] (H4dbtec = 3,6-dibromobenzene-1,2,4,5-tetracarboxylic acid; H2ox = oxalic acid), were synthesized under the hydrothermal method and characterized by single-crystal x-ray diffraction, X-ray powder diffraction (PXRD), TGA and elemental anal. (EA) and IR spectra. Complexes 1 and 2 present a 2-nodal (4,6)-connected 3-dimensional fsc network. The 13C NMR of H4dbtec indicates ox in 1 and 2 is generated by the in situ decomposition of H4dbtec. Addnl., the photoluminescent properties of 1 and 2 are also discussed. The experimental process involved the reaction of 3,6-Dibromobenzene-1,2,4,5-tetracarboxylic acid(cas: 41819-13-0).Formula: C10H4Br2O8

The Article related to lanthanide bromobenzenetetracarboxylate oxalate 3d framework complex hydrothermal preparation, crystal structure lanthanide bromobenzenetetracarboxylate oxalate 3d framework complex, luminescence lanthanide bromobenzenetetracarboxylate oxalate 3d framework complex and other aspects.Formula: C10H4Br2O8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Oxygen vacancy-induced donor-acceptor-conjugated microporous poly(triphenylamine-benzothiadiazole)/TiO2 as a Z-scheme heterojunction photocatalyst towards a visible-light-driven degradation of bisphenol A》 was written by Liu, Chenrui; Liu, Lulu; Liu, Yun; Dang, Zhi; Li, Chengcheng. Name: Tris(4-bromophenyl)amineThis research focused ontitanium dioxide heterojunction photocatalyst polycondensation structural morphol catalytic property. The article conveys some information:

Herein, a kind of donor-acceptor-conjugated microporous polymer (D-A CMP), poly(triphenylamine-benzothiadiazole) denoted as TPABT, was introduced to synthesize a novel organic-inorganic heterojunction photocatalyst with TiO2 by in situ polycondensation. Resultant TPABT/TiO2 composites were used to photodegrade bisphenol A (BPA) under visible light. Results indicated that the TPABT/TiO2 composite with a mass ratio of TPABT to TiO2 of 10 : 100 (labeled as 10-TPABT/TiO2) showed optimum photocatalytic activity, 8 and 4 times that of pure TiO2 and TPABT, resp. Systematic characterizations revealed that the incorporation of TPABT caused the generation of oxygen vacancies on TiO2, which improved the visible light responsiveness of TiO2. Moreover, EIS (electrochem. impedance spectroscopy), photocurrent response and PL emission spectra suggested that 10-TPABT/TiO2 composites exhibited optimum activity than TPABT and TiO2. Moreover, detailed investigations indicated that the improvement in the photoactivity of TPABT/TiO2 contributed to the formation of a Z-scheme heterojunction, which enhanced the charge transfer from TPABT to TiO2. This work provides some interesting ideas for enhancing the photocatalytic activity of TiO2 and exploiting efficient heterojunction photocatalysts based on CMPs for pollutant degradation The experimental part of the paper was very detailed, including the reaction process of Tris(4-bromophenyl)amine(cas: 4316-58-9Name: 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)Name: Tris(4-bromophenyl)amine

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Nonlinear optical pigments. Two-photon absorption in crosslinked conjugated polymers and prospects for remote nonlinear optical thermometry》 was published in Polymers (Basel, Switzerland) in 2020. These research results belong to Zareba, Jan K.; Nyk, Marcin; Samoc, Marek. Application of 4316-58-9 The article mentions the following:

Nonlinear optical (NLO) pigments are compounds insoluble in solvents that exhibit phenomena related to nonlinear optical susceptibilities (χ(n) where n = 2,3), e.g., two-photon absorption (2PA) which is related to the imaginary part of χ(3). Determination of spectrally-resolved 2PA properties for NLO pigments of macromol. nature, such as coordination polymers or crosslinked polymers, has long been a challenging issue due to their particulate form, precluding characterizations with standard techniques such as Z-scan. In this contribution, we investigate thus far unknown spectrally-resolved 2PA properties of a new subclass of NLO pigments-crosslinked conjugated polymers. The studied compounds are built up from electron-donating (triphenylamine) and electron-withdrawing (2,2′-bipyridine) structural fragments joined by vinylene (Pol1) or vinyl(4-ethynylphenyl) (Pol2) aromatic bridges. 2PA properties of these polymers have been characterized in broad spectral range by specially modified two-photon excited fluorescence (TPEF) techniques: solid state TPEF (SSTPEF) and internal standard TPEF (ISTPEF). The impact of self-aggregation of aromatic backbones on the 2PA properties of the polymers has been evaluated through extended comparisons of NLO parameters, i.e., 2PA cross sections (σ2) and molar-mass normalized 2PA merit factors (s2/M) with those of small-mol. model compounds: Mod1 and Mod2. By doing this, we found that the 2PA response of Pol1 and Pol2 is improved 2-3 times vs. resp. model compounds in the solid state form. Further comparisons with 2PA results collected fordiluted solutions of Mod1 and Mod2 supports the notion that self-aggregated structure contributes to the observed enhancement of 2PA response. On the other hand, it is clear that Pol1 and Pol2 suffer from aggregation-caused quenching phenomenon, well reflected in time-resolved fluorescence properties as well as in relatively low values of quantum yield of fluorescence. Accordingly, despite improved intrinsic 2PA response, the effective intensity of two-photon excited emission for Pol1 and Pol2 is slightly lower relative to Mod1 and Mod2. Finally, we explore temperature-resolved luminescence properties under one- (377 nm), two- (820 nm), and three-photon excitation (1020 nm) conditions of postsynthetically Eu3+-functionalized material, Pol1-Eu, and discuss its suitability for temperature sensing applications. After reading the article, we found that the author used Tris(4-bromophenyl)amine(cas: 4316-58-9Application 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)Application of 4316-58-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of Tris(4-bromophenyl)amineIn 2020 ,《Self-reducible conjugated microporous polyaniline for long-term selective Cr(VI) detoxication driven by tunable pore dimension》 was published in ACS Applied Materials & Interfaces. The article was written by Chen, Jie; Wang, Yubing; Ye, Changshen; Wei, Lyu; Zhu, Jinwei; Yan, Wei; Qiu, Ting. The article contains the following contents:

A simple methodol. to controllably tune the pore size and Cr(VI) adsorption capacity was reported herein to synthesize a new series of conjugated microporous polyaniline (CMPA) networks. The well-ordered micropore was acquired through our very recent Bristol-Xi’an Jiaotong method, and the pore size was fine-tuned to increase with the increasing length of linkers, mimicking covalent organic frameworks and metal organic frameworks very much. A selective ultrahigh adsorption capacity of 520.8 mg/g was achieved by CMPA-1 in a very fast manner, with a systematically gradual decrease to 173.9 mg/g of CMPA-3 by enlarging the pore size of the networks, featuring tunable adsorption capacity through mol.-size-recognition mechanism. Addnl., our robust CMPA networks, which were constructed by Buchwald-Hartwig chem., showed the complete function of polyaniline and were capable of providing, besides large storage capacity for Cr(III), at least 10 reductant/desorption-free cycles for effective Cr(VI) reduction and detoxication through their novel self-reducible redox states. Outcomes showed that our CMPAs could be applied as new self-healing scavengers in the next generation for Cr(VI) storage and detoxication.Tris(4-bromophenyl)amine(cas: 4316-58-9Quality Control of Tris(4-bromophenyl)amine) was used in this study.

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

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Structure-Activated Copper Photosensitizers for Photocatalytic Water Reduction》 was published in Chemistry – A European Journal in 2017. These research results belong to Chen, Nan-Yu; Xia, Liang-Min; Lennox, Alastair J. J.; Sun, Yuan-Yuan; Chen, Hao; Jin, Hai-Ming; Junge, Henrik; Wu, Qin-An; Jia, Jian-Hong; Beller, Matthias; Luo, Shu-Ping. SDS of cas: 97802-08-9 The article mentions the following:

A series of phenanthroline-based ligands have been synthesized and their influence as bidentate nitrogen ligands in heteroleptic [Cu(PP̂)(NN̂)]+ photosensitizers in light-driven water reduction has been studied. In this noble-metal-free Cu-Fe-based photocatalytic water reduction system, the structural effects of the nitrogen ligands have been explored, including the steric and electronic effects of substituents at the 2,9- and 4,7-positions of phenanthroline. Ligands were prepared that led to increased hydrogen generation, with turnover numbers (TONCu) of up to 1388 being observed All the new complexes were electrochem. and photophys. characterized. We demonstrate for the first time that the presence of fluorine in nitrogen ligands increases the efficacy of copper complexes in photocatalytic hydrogen production The experimental part of the paper was very detailed, including the reaction process of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9SDS of cas: 97802-08-9)

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. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.SDS of cas: 97802-08-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Xuting; Fan, Lili; Xu, Ben; Shang, Yanxue; Li, Mengfei; Zhang, Ling; Liu, Shuo; Kang, Zixi; Liu, Zhanning; Lu, Xiaoqing; Sun, Daofeng published an article in 2021. The article was titled 《Single-Atom-like B-N3 Sites in Ordered Macroporous Carbon for Efficient Oxygen Reduction Reaction》, and you may find the article in ACS Applied Materials & Interfaces.Reference of Tris(4-bromophenyl)amine The information in the text is summarized as follows:

On the premise of cleanliness and stability, improving the catalytic efficiency for the oxygen reduction reaction in the electrode reaction of fuel cells and metal-air batteries is of vital importance. Studies have shown that heteroatom doping and structural optimization are efficient strategies. Herein, a single-atom-like B-N3 configuration in carbon is designed for efficient oxygen reduction reaction catalysis inspired by the extensively studied transition metal M-Nx sites, which is supported on the ordered macroporous carbon prepared by utilizing a hydrogen-bonded organic framework as carbon and nitrogen sources and SiO2 spheres as a template. The co-doping of B/N and ordered macroporous structures promote the metal-free material high oxygen reduction catalytic performance in alk. media. DFT calculations reveal that the B-N3 structure played a key role in enhancing the oxygen reduction activity by providing rich favorable *OOH and *OH adsorption sites on the B center. The promoted formation of *OH/*OOH intermediates accelerated the electrocatalyst reaction. This study provides new insights into the design of single-atom-like nonmetallic ORR electrocatalysts and synthesis of ordered macroporous carbons based on hydrogen-bonded organic frameworks. The results came from multiple reactions, including the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Reference of Tris(4-bromophenyl)amine)

In other references, 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

《Organic Polymer Nanoparticles with Primary Ammonium Salt as Potent Antibacterial Nanomaterials》 was published in ACS Applied Materials & Interfaces in 2020. These research results belong to Guo, Lixia; Wang, Haoping; Wang, Yunxia; Liu, Feng; Feng, Liheng. Reference of Tris(4-bromophenyl)amine The article mentions the following:

Bacterial infections induced by drug-resistant strains have become a global crisis. A membrane-disrupted mechanism is considered as an effective way to kill bacteria with little chance to trigger drug resistance. It is necessary to explore and develop new materials based on the membrane-disrupted mechanism to combat bacterial resistance. Here we report the design of organic nanoparticles based on a polymer (PDCP) as highly effective inhibition and bactericidal reagents. The PDCP is devised to have a hydrophobic skeleton and hydrophilic side chain modified with protonated primary amines, which could self-assemble to form organic nanoparticles (PDCP-NPs). By taking advantage of the large surface to volume ratio of nanoparticles, the synthesized PDCP-NPs have enriched pos. charges and multiple membrane-binding sites. Research results display that PDCP-NPs have highly potent antibacterial activity in vitro and vivo, especially for Gram-neg. bacteria with low toxicity against mammalian cells. This work design will inspire researchers to develop more membrane-disrupted bactericide and advance the applications of organic nanoparticles in the antibacterial area. After reading the article, we found that the author used Tris(4-bromophenyl)amine(cas: 4316-58-9Reference of Tris(4-bromophenyl)amine)

In other references, 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

Application of 4316-58-9In 2021 ,《Tunable pyridyl-based conjugated microporous polymers for visible light-driven hydrogen evolution》 appeared in ACS Applied Energy Materials. The author of the article were Kotp, Mohammed G.; Elewa, Ahmed M.; El-Mahdy, Ahmed F. M.; Chou, Ho-Hsiu; Kuo, Shiao-Wei. The article conveys some information:

Conjugated microporous polymers (CMPs) are promising light harvesters for photocatalytic H2 evolution because they are simple to prepare with various band gaps. To achieve CMPs displaying high photocatalytic performance, appropriate building blocks must be chosen. We prepared four kinds of triphenylpyridine-based CMPs (TPP-CMPs) through reactions with multibrominated monomers having different geometries [1,3,6,8-tetrabromopyrene (pyrene-4Br), tris(4-bromophenyl)amine (TPA-3Br), 2,4,6-tris(4-bromrophenyl)pyridine (TPP-3Br), and 1,2,4,5-tetrabromobenzene (BZ-4Br), forming the TPP-pyrene (Py), TPP-triphenylamine (TPA), TPP-TPP, and TPP-benzene (BZ) CMPs, resp.]. This strategy allowed effective synthetic regulation of electron enrichment, porosities, and optoelectronic properties of the TPP-CMPs. The surface areas of the TPP-CMPs were high, up to 1370 m2 g-1, and had a high thermal stability. TPP-Py CMP displayed the highest photocatalytic performance with a H2 production rate of 18 100 μmol g-1 h-1 under irradiation with visible light. Moreover, we achieved apparent quantum yields as high as 22.97% at 420 nm, comparable with those of most other CMPs reported previously. The experimental process involved the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Application of 4316-58-9)

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

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of Tris(4-bromophenyl)amineIn 2021 ,《Porosity Design on Conjugated Microporous Poly(Aniline)S for Exceptional Mercury(II) Removal》 appeared in ACS Applied Materials & Interfaces. The author of the article were Lou, Xiaoyu; Chen, Jie; Xiong, Zhuo; Tang, Duanlian; Chen, Xiaoyan; Chen, Song; Dong, Rong; Ye, Changshen; Qiu, Ting. The article conveys some information:

The use of conjugated microporous polymers (CMPs) in practical wastewater treatment demands further design on the pore structure, otherwise their adsorption capacities toward heavy-metal ions were moderate. Here, we report a rational design approach, which produces hybrid mol. pores in conjugated microporous poly(aniline)s (CMPAs) for mercury removal. It is achieved through a delicate interval introduction of linkers with differential mol. lengths during polymerization, acquiring both diffusion channels and storage pores for radical enhancement of mass transfer and adsorption storage. The resulting CMPA-M featured a large adsorption capacity of 975 mg g-1 and rapid kinetics that could remove 94.8% of 50 mg g-1 of mercury(II) within a very short contact time of 48 s, with a promising initial adsorption rate h as high as 113 mg g-1 min-1, which was 2.54-fold larger in the adsorption capacity and 45.2-fold faster in the adsorption efficiency compared with the undeveloped CMPAs. More importantly, our CMPA-M-2, with robust stability and easy reusability, was able to scavenge over 99.9% of mercury(II) from the actual wastewater in a harsh condition with a very low pH of 0.77, extremely high salinity of 53,157 mg L-1, and complex impurities, featuring exceptional selectivity that allows us to extract and recycle a high purity of 99.1% of mercury from the wastewater. These outcomes demonstrate the unprecedented potential of CMPs for environmental remediation and real-world mercury extraction and present benchmarks for CMP-based mercury adsorbents. In the experiment, the researchers used many compounds, for example, Tris(4-bromophenyl)amine(cas: 4316-58-9Quality Control 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)Quality Control of Tris(4-bromophenyl)amine

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary