Category: 6825-20-3

HPLC of Formula: 6825-20-3In 2021 ,《Rigid Polyimides with Thermally Activated Delayed Fluorescence for Polymer Light-Emitting Diodes with High External Quantum Efficiency up to 21%》 was published in Angewandte Chemie, International Edition. The article was written by Long, Yubo; Chen, Xiaojie; Wu, Huiyan; Zhou, Zhuxin; Sriram Babu, Seenivasagaperumal; Wu, Minming; Zhao, Juan; Aldred, Matthew P.; Liu, Siwei; Chen, Xudong; Chi, Zhenguo; Xu, Jiarui; Zhang, Yi. The article contains the following contents:

Rigid nonconjugated polyimide (PI)-based thermally activated delayed fluorescence (TADF) polymers were reported, based on a TADF-linker-host strategy. Among of which, the TADF unit contains a typical TADF luminous core structure, the Host unit exhibits effective conjugation length that endows polyimide with high triplet energy, and the Linker unit has an aliphatic ring structure to improve solubility and inhibits intramol. charge transfer effect. All the TADF polymers exhibit high thermal stability (Tg > 308.7°) and refractive index (1.76-1.79). Highly-efficient polymer light-emitting diodes (PLEDs) based on the polymers are successfully realized, leading to a maximal external quantum efficiency of 21.0% along with low efficiency roll-off. Such outstanding efficiency is amongst the state-of-the-art performance of nonconjugated PLEDs, confirming the effectiveness of structural design strategy, providing helpful and valuable guidance on the development of highly-efficient fluorescent polymer materials and PLEDs. The results came from multiple reactions, including the reaction of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3HPLC of Formula: 6825-20-3)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.HPLC of Formula: 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Application In Synthesis of 3,6-Dibromo-9H-carbazoleIn 2019 ,《Analysis of polyhalogenated carbazoles in sediment using liquid chromatography-tandem mass spectrometry》 was published in Ecotoxicology and Environmental Safety. The article was written by Zhou, Wenxiu; Huang, Xinwen; Lin, Kunde. The article contains the following contents:

The purpose of this study was to develop a novel and sensitive method for the anal. of carbazole and polyhalogenated carbazoles (PHCs) in sediment using ultra performance liquid chromatog.-tandem mass spectrometry (UPLC-MS/MS). Briefly, 5.0 g of freeze-dried sediment samples were extracted with dichloromethane using pressurized liquid extraction (PLE). The extract was purified with Florisil solid phase extraction cartridge, filtered through 0.22μm polytetrafluoroethylene filter using a glass syringe, followed by LC-MS/MS anal. Besides parameters for LC-MS/MS anal., sample preparation procedures (including solvents for PLE, sorbents for cleanup, and filters for sample filtration) were optimized. The limits of detection and limits of quantification of target compounds were in the ranges of 3.0 × 10-3 to 0.22 ng g-1 dry weight (d.w.) and 1.0 × 10-2 to 0.75 ng g-1 d.w., resp. The recoveries of target compounds in the spiked sediments at 2.0 ng g-1 d.w. and 10 ng g-1 d.w. were 64.8-91.8% and 70.9-124.7%, resp., with relative standard deviations being less than 13.2%. Except that 36-BCZ had pos. matrix effects of 63.3%, the sediment matrixes generally displayed low or medium neg. matrix effects on the other target compounds during LC-MS/MS anal. The developed method was applied in the anal. of carbazoles and PHCs in sediment samples from Jiulong River, Fujian, China and all the target compounds were detected in the samples. In the experiment, the researchers used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Application In Synthesis of 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.Application In Synthesis of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Hydrogen-Bonded Crystalline Molecular Machines with Ultrafast Rotation and Displacive Phase Transitions》 was written by Colin-Molina, Abraham; Jellen, Marcus J.; Rodriguez-Hernandez, Joelis; Cifuentes-Quintal, Miguel Eduardo; Barroso, Jorge; Toscano, Ruben A.; Merino, Gabriel; Rodriguez-Molina, Braulio. Formula: C12H7Br2N And the article was included in Chemistry – A European Journal in 2020. The article conveys some information:

Two new crystalline rotors 1 and 2 assembled through N-H···N hydrogen bonds by using halogenated carbazole as stators and 1,4-diaza[2.2.2]bicyclooctane (DABCO) as the rotator, are described. The dynamic characterization through 1H T1 relaxometry experiments indicate very low rotational activation barriers (Ea) of 0.67 kcal mol-1 for 1 and 0.26 kcal mol-1 for 2, indicating that DABCO can reach a THz frequency at room temperature in the latter. These Ea values are supported by solid-state d. functional theory computations. Interestingly, both supramol. rotors show a phase transition between 298 and 250 K, revealed by differential scanning calorimetry and single-crystal X-ray diffraction. The subtle changes in the crystalline environment of these rotors that can alter the motion of an almost barrierless DABCO are discussed here. In the part of experimental materials, we found many familiar compounds, such as 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Formula: C12H7Br2N)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Formula: C12H7Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Carbazole-Terminated Isomeric Hole-Transporting Materials for Perovskite Solar Cells》 was written by Rakstys, Kasparas; Paek, Sanghyun; Drevilkauskaite, Aida; Kanda, Hiroyuki; Daskeviciute, Sarune; Shibayama, Naoyuki; Daskeviciene, Maryte; Gruodis, Alytis; Kamarauskas, Egidijus; Jankauskas, Vygintas; Getautis, Vytautas; Nazeeruddin, Mohammad Khaja. Computed Properties of C12H7Br2N And the article was included in ACS Applied Materials & Interfaces in 2020. The article conveys some information:

A set of novel hole-transporting materials (HTMs) based on π-extension through carbazole units was designed and synthesized via a facile synthetic procedure. The impact of isomeric structural linking on their optical, thermal, electrophys., and photovoltaic properties was thoroughly investigated by combining the exptl. and simulation methods. Ionization energies of HTMs were measured and found to be suitable for a triple-cation perovskite active layer ensuring efficient hole injection. New materials were successfully applied in perovskite solar cells, which yielded a promising efficiency of up to almost 18% under standard 100 mW cm-2 global AM1.5G illumination and showed a better stability tendency outperforming that of 2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene. This work provides guidance for the mol. design strategy of effective hole-conducting materials for perovskite photovoltaics and similar electronic devices. In the part of experimental materials, we found many familiar compounds, such as 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Computed Properties of C12H7Br2N)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Computed Properties of C12H7Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Safety of 3,6-Dibromo-9H-carbazoleIn 2019 ,《Method development for analyzing ultratrace polyhalogenated carbazoles in soil and sediment》 appeared in Ecotoxicology and Environmental Safety. The author of the article were Zhou, Yanxiao; Zhu, Guohua; Li, Mufei; Liu, Jinsong; Li, Zuguang; Sun, Junjun; Gong, Hongping; Wang, Ling; Wu, Chenwang; Zhou, Xin; Yin, Ge. The article conveys some information:

In the past few years, polyhalogenated carbazoles (PHCZs) have been of increasing concern because their structure is similar to that of legacy POPs. In the present study, an anal. method, including intensive cleanup and fractionation procedures in combination with instrumental parameters, was developed to determine ultratrace polyhalogenated carbazoles (PHCZs) in soil and sediment. The eluting sorbents, volume and packing of the column were optimized. Our results showed that 5 g of florisil and 4 g of silica gel under 150 mL of hexane/DCM = 3:1 presented good performance in terms of recovery and repeatability. GC-HRMS, GC-MS/MS (EI-MRM) and GC-MS (EI-SIM) were applied to compare the performance of PHCZ anal. For sensitivity, EI-MRM presents method detection limits comparable to those of GC-HRMS and much lower than those of EI-SIM. Regarding selectivity, GC-HRMS performed better than the other two techniques since GC-HRMS can reduce interference from perfluorokerosene (PFK) and DDX (DDT, DDE, and DDD) due to its high resolution GC-HRMS was then further optimized by shortening the run time and modifying the SIM ion. The final method was successfully applied to determine PHCZs in soil and sediment, and the target compounds had almost 100% detection frequency in the samples. The ubiquitous presence of PHCZ in soil and sediment calls for a further investigation of its source, distribution and degradation in the environment. In the part of experimental materials, we found many familiar compounds, such as 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Safety of 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.Safety of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Physical Chemistry Chemical Physics included an article by Ballesteros, Paola; Cuadrado, Alba; Gilabert, Alejandra; Fajari, Lluis; Sires, Ignasi; Brillas, Enric; Almajano, Maria Pilar; Velasco, Dolores; Anglada, Josep M.; Julia, Luis. COA of Formula: C12H7Br2N. The article was titled 《Formation of a stable biradical triplet state cation versus a closed shell singlet state cation by oxidation of adducts of 3,6-dimethoxycarbazole and polychlorotriphenylmethyl radicals》. The information in the text is summarized as follows:

We report an exptl. and theor. study of two stable radical adducts of the triphenylmethyl series, 1 and 2, whose composition and mol. structure are distinguished by the content and position of chlorine atoms in phenyls. The electrochem. study through cyclic voltammetry of these open layer species shows the existence of two reversible processes, related to reduction and oxidation, to stable charged species. The chem. oxidation of both radical adducts gives rise to stable cations, whose fundamental state has a biradical triplet electronic structure or a closed shell singlet character, depending on the electronic conjugation between the donor and acceptor electron moieties. The presence of chlorines adjacent to the nitrogen in 1 breaks the conjugation between both halves, facilitating the formation of a triplet electronic state of the cation, while the absence of chlorines in these positions in 2 facilitates partial conjugation and stabilizes the closed shell singlet electronic state of the cation. In the experiment, the researchers used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3COA of Formula: C12H7Br2N)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.COA of Formula: C12H7Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Scope, Kinetics, and Mechanism of “”On Water”” Cu Catalysis in the C-N Cross-Coupling Reactions of Indole Derivatives》 was published in European Journal of Organic Chemistry in 2020. These research results belong to Malavade, Vrunda; Patil, Manish; Patil, M.. Product Details of 6825-20-3 The article mentions the following:

In the presence of CuI and 1,10-phenanthroline, indoles and carbazoles underwent cross-coupling reactions with aryl iodides in (on) aqueous DME at 95° to yield N-aryl indoles and carbazoles. The reaction was accelerated significantly in aqueous DME over with DME or water alone. The kinetics and mechanism of the copper-catalyzed cross-coupling were studied; the mechanism, transition state structures and activation barriers, and effect of water on the oxidative addition and reductive elimination steps were studied using DFT calculations The water accelerated the cross-coupling rate acceleration by stabilizing the transition state of oxidative addition of iodobenzene to a copper phenanthroline complex (the rate-limiting step of reaction) through hydrogen bonding. The experimental part of the paper was very detailed, including the reaction process of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Product Details of 6825-20-3)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent. And it has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.Product Details of 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Sun, Yuxiang; Yang, Lili; Chen, Changzhi; Li, Cui; Zheng, Minghui; Jin, Rong; Wang, Wenwen; Yang, Nan; Li, Yinming; Liu, Guorui published an article in Rapid Communications in Mass Spectrometry. The title of the article was 《Method development for determination of polyhalogenated carbazoles in industrial waste through gas chromatography/triple quadrupole tandem mass spectrometry》.Application In Synthesis of 3,6-Dibromo-9H-carbazole The author mentioned the following in the article:

Polyhalogenated carbazoles (PHCZs) are dioxin-like compounds that are ubiquitous in the environment. However, their unintentional emissions from industrial sources have received little attention and there is no method available for determination of PHCZs in industrial waste. This research develops a method for determination of PHCZs in industrial waste. In this research, a glass column packed with activated silica serves as a rapid and efficient clean-up pretreatment for purification An isotope dilution gas chromatog./triple quadrupole tandem mass spectrometry method was established for simultaneous determination of eleven PHCZs in industrial samples. The regression coefficients of the standard curves for the congeners were all >0.99. The method detection limit ranged from 1.46 to 3.82 ng/mL for liquid samples and from 0.009 to 0.021 ng/g for solid samples. The precision described by the relative standard deviation ranged from 2.4% to 18.4% for liquid samples and from 5.5% to 35.8% for solid samples. The recovery ranges for the liquid and solid samples were 82%-123% and 83%-137%, resp. 3-Chlorocarbazole (3-CCZ) and 36-dichlorocarbazole (36-CCZ) can be detected in both chem. bottom liquid from vinyl chloride production and fly ash from medical waste incineration by this method. An efficient method is established for determination of PHCZs from industrial waste. The discovery of 3-CCZ and 36-CCZ highlights the importance of identification of potential industrial sources of PHCZs and clarification of their contribution to environmental risks. Our method could be applied to investigate industrial emission of PHCZs. The experimental part of the paper was very detailed, including the reaction process of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Application In Synthesis of 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.Application In Synthesis of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Hydrogen bonding induces dual porous types with microporous and mesoporous covalent organic frameworks based on Biscarbazole units》 was published in Microporous and Mesoporous Materials in 2020. These research results belong to Abuzeid, Hesham R.; El-Mahdy, Ahmed F. M.; Kuo, Shiao-Wei. HPLC of Formula: 6825-20-3 The article mentions the following:

Although the topologies of covalent organic frameworks (COFs) can be controlled mainly by varying the symmetries of the building blocks condensed to form the structures, another approach is to change the structures of blocks but retain the same symmetries. The construction of a single COF featuring pores of different sizes from two sym. building blocks remains extremely difficult. In this paper, we report an investigation into the effect of hydrogen bonding on the topol. regulation of two-dimensional COFs as a new approach for managing their properties. Our strategy involved introducing pristine and substituted diamine monomers-benzidine (BD) and 1,4-dihydroxybenzidine (DHBD)-into the skeleton of Biscarbazole-based COFs. The constructed Biscarbazole-based COFs, Cz-BD and Cz-DHBD, were designed using a (C2 + C2) geometry strategy and synthesized through Schiff-base condensations of Biscarbazole-4CHO and the benzidine derivatives The resulting COFs featured two different topologies: Cz-BD COF possessing a single type of pore having a tetragonal structure, and Cz-DHBD COF possessing a Kagome structure featuring two types of pores (one hexagonal and the other triangular with mesoporous and microporous structure, induced by intramol. OH···N hydrogen bonding). These COFs exhibited high crystallinity, great thermal stability, and large surface areas, as well as synergistic structural effects and high-performance CO2 uptake.3,6-Dibromo-9H-carbazole(cas: 6825-20-3HPLC of Formula: 6825-20-3) was used in this study.

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent. And it has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.HPLC of Formula: 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Song, Xianghai; Zhang, Xinyu; Wang, Mei; Li, Xin; Zhu, Zhi; Huo, Pengwei; Yan, Yongsheng published their research in Journal of Colloid and Interface Science in 2021. The article was titled 《Fabricating intramolecular donor-acceptor system via covalent bonding of carbazole to carbon nitride for excellent photocatalytic performance towards CO2 conversion》.Recommanded Product: 3,6-Dibromo-9H-carbazole The article contains the following contents:

Photocatalytic conversion of CO2 into hydrocarbon fuels is an ideal technol. of mitigating greenhouse effect caused by excessive emission of CO2. However, the high recombination rate of electron-hole pairs and limited charge carriers transport speed constrained the catalytic performance of many semiconductor catalysts. In this contribution, a series of carbon nitride (g-CN) samples with intramol. donor-acceptor (D-A) system were successfully prepared by introducing organic donor into their structures. Characterization results confirmed that carbazole was successful connected to the structure of g-CN via chem. bond. The formation of intramol. D-A system greatly enlarged the light response region of g-CN-xDbc. In addition, a new charge transfer transition mode was formed in g-CN-0.01Dbc due to the incorporation carbazole, which enable it to use light with energy lower than the intrinsic absorption of g-CN. Meanwhile, the D-A structure led to the spatial separation of electrons and holes in g-CN-xDbc and significantly decreased the recombination rate of electron-hole pairs. The g-CN-0.01Dbc presented the best catalytic performance and the CO evolution rate was 9.6 times higher than that of g-CN. Moreover, the reaction was performed in water without any additive, which made it green and sustainable. DFT simulation confirmed the D-A structure and charge carrier migration direction in the prepared samples. After reading the article, we found that the author used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Recommanded Product: 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent. And it has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.Recommanded Product: 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary