Month: October 2022

《Heteroporous bifluorenylidene-based covalent organic frameworks displaying exceptional dye adsorption behavior and high energy storage》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. These research results belong to El-Mahdy, Ahmed F. M.; Zakaria, Mohamed Barakat; Wang, Hao-Xin; Chen, Tao; Yamauchi, Yusuke; Kuo, Shiao-Wei. Application of 6825-20-3 The article mentions the following:

In this study we performed one-pot polycondensations of BFTB-4CHO with PyTA-4NH2, BFTB-4NH2, and BCTA-4NH2 to prepare the bifluorenylidene-based covalent organic frameworks (COFs) BFTB-PyTA, BFTB-BFTB, and BFTB-BCTA, resp. These three COFs possessed extremely high thermal stabilities, excellent crystallinities, and high sp. surface areas. The BFTB-PyTA COF featured pores of a single size, whereas the BFTB-BFTB and BFTB-BCTA COFs had dual porosities. The COFs were exceptional adsorbers of the small dye mol. rhodamine B (RhB) in water; the maximum adsorption capacities reached as high as 2127 mg g-1, outpacing those of all previously reported COFs, conjugated polymers, activated carbons, and other common nanoporous adsorbents. In addition, our COFs reached up to 99.2% of their maximum adsorption capabilities very rapidly (within 5 min). Furthermore, these COFs displayed good performance when used in electrodes for supercapacitors, with high stability after 2000 cycles. The superior adsorption efficiencies, ultrafast kinetics, and excellent reusability endow such COFs with tremendous potential for use as materials for removing RhB-and, presumably, other organic pollutants-from wastewater. In the part of experimental materials, we found many familiar compounds, such as 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Application 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.Application of 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Choi, Seung-Wan; Kim, Hyun-Min; Yoon, Suk-Young; Jo, Dae-Yeon; Kim, Sun-Kyo; Kim, Yuri; Park, Seong Min; Lee, Young-Ju; Yang, Heesun published an article in 2022. The article was titled 《Aminophosphine-derived, high-quality red-emissive InP quantum dots by the use of an unconventional In halide》, and you may find the article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices.Category: bromides-buliding-blocks The information in the text is summarized as follows:

Aminophosphine-based red InP quantum dots (QDs) were synthesized by adopting an unconventional In precursor of InBr3 instead of InCl3 and examine the effect of the type of surface halide, revealing that bromide is more advantageous in suppressing the surface oxidation and thus attains a brighter emissivity over chloride. A further improvement of InBr3-based red InP QDs toward deeper, narrower emissivity is demonstrated by the thickening of the ZnSe inner shell, resulting in a PL peak λ = 621 nm and bandwidth of 44 nm along with a quantum yield of 86%. These high-quality InP QDs are also tested as red electroluminescent (EL) emitters, producing promising EL outcomes in luminance and efficiency. The results came from multiple reactions, including the reaction of Indium(III) bromide(cas: 13465-09-3Category: bromides-buliding-blocks)

Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Dong, Changshuai; Meng, Bin; Liu, Jun; Wang, Lixiang published an article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The title of the article was 《An n-type narrow-bandgap organoboron polymer with quinoidal character synthesized by direct arylation polymerization》.SDS of cas: 3141-27-3 The author mentioned the following in the article:

Narrow bandgap conjugated polymers have received great attention due to their wide applications in optoelectronic devices. Because of the synthetic difficulty, it is greatly challenging to develop n-type conjugated polymers with a narrow bandgap with quinoidal character. Herein, we report an n-type narrow-bandgap organoboron polymer with quinoidal character, PBN-TP. PBN-TP is designed with alternating units of BNBP (double B ← N bridged bipyridine) and quinoidal TP (thieno[3,4-b]pyrazine). Direct arylation polymerization of the di-bromo BNBP unit and the di-hydro TP unit affords the organoboron polymer with a high number-average mol. weight of 28.3 kDa. Compared with the control polymer with alternating units of BNBP and thiophene, PBN-T, the replacement of the thiophene unit with a quinoidal TP unit reduces the bond length alternation (BLA) of carbon-carbon bonds and planarized the polymer backbone of PBN-TP, leading to an enhanced contribution of the polymer quinoidal resonance structure. As a result, compared with PBN-T, PBN-TP shows a much reduced bandgap of 1.50 eV, which is among the lowest reported for n-type organoboron polymers based on BNBP. Moreover, due to the low LUMO energy level, PBN-TP could be readily n-doped and used as an n-type polymer thermoelec. material. This work provides a new n-type narrow bandgap conjugated polymer with quinoidal character. In the experiment, the researchers used many compounds, for example, 2,5-Dibromothiophene(cas: 3141-27-3SDS of cas: 3141-27-3)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.SDS of cas: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Computed Properties of C18H12Br3NIn 2020 ,《Thiol-yne crosslinked triarylamine hole transport layers for solution-processable organic light-emitting diodes》 was published in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The article was written by Kutonova, Ksenia; Ebenhoch, Bernd; Graf von Reventlow, Lorenz; Heissler, Stefan; Rothmann, Lukas; Braese, Stefan; Colsmann, Alexander. The article contains the following contents:

Triarylamine derivatives are widely used for hole transport in organic optoelectronic devices, but their excellent solubility in many common solvents limits their use for multi-layer device fabrication from solution In this work, a novel process to the formation of conjugated triarylamine polymer thin-film networks by crosslinking of thiol-substituted and alkyne-substituted triarylamines is investigated. After deposition of the monomer blend and crosslinking under UV exposure, an insoluble thiol-yne polymer network is formed. The applicability of the thiol-yne polymer network as hole-transport layers is exemplified on organic light-emitting diodes. Its implementation reduces the device degradation as compared to OLEDs comprising hole-transport layers from PEDOT:PSS. In addition to this study using Tris(4-bromophenyl)amine, there are many other studies that have used Tris(4-bromophenyl)amine(cas: 4316-58-9Computed Properties of C18H12Br3N) 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)Computed Properties of C18H12Br3N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Surnar, Bapurao; Basu, Uttara; Banik, Bhabatosh; Ahmad, Anis; Marples, Brian; Kolishetti, Nagesh; Dhar, Shanta published 《Nanotechnology-mediated crossing of two impermeable membranes to modulate the stars of the neurovascular unit for neuroprotection》.Proceedings of the National Academy of Sciences of the United States of America published the findings.Application In Synthesis of 8-Bromooctanoic acid The information in the text is summarized as follows:

The success of nanoparticle-mediated delivery of antioxidant and antiinflammatory-based neuroprotectants to the brain to improve neuronal functions in neurodegenerative diseases has demonstrated lesser impact instead of achieving its full potential. We hypothesized that these failures were due to a combination of parameters, such as: (i) unavailability of a delivery vehicle, which can reproducibly and efficiently transport through the brain capillary endothelium; (ii) inefficient uptake of therapeutic nanoparticles in the neuronal cell population; and (iii) limited ability of a single nanoparticle to cross the two most-impermeable biol. barriers, the blood brain barrier and mitochondrial double membrane, so that a nanoparticle can travel through the brain endothelial barrier to the mitochondria of target cells where oxidative damage is localized. Herein, we demonstrate optimization of a biodegradable nanoparticle for efficient brain accumulation and protection of astrocytes from oxidative damage and mitochondrial dysfunctions to enhance the neuroprotection ability of astrocytes toward neurons using neurodegeneration characteristics in SOD1G93A rats. This biodegradable nanomedicine platform with the ability to accumulate in the brain has the potential to bring beneficial effects in neurodegenerative diseases by modulating the stars, astrocytes in the brain, to enhance their neuroprotective actions. The experimental process involved the reaction of 8-Bromooctanoic acid(cas: 17696-11-6Application In Synthesis of 8-Bromooctanoic acid)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.Application In Synthesis of 8-Bromooctanoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Exploitation of two-dimensional conjugated covalent organic frameworks based on tetraphenylethylene with bicarbazole and pyrene units and applications in perovskite solar cells》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. These research results belong to Mohamed, Mohamed Gamal; Lee, Chia-Chen; El-Mahdy, Ahmed F. M.; Luder, Johann; Yu, Ming-Hsuan; Li, Zhen; Zhu, Zonglong; Chueh, Chu-Chen; Kuo, Shiao-Wei. Computed Properties of C12H7Br2N The article mentions the following:

In this work, two-dimensional conjugated covalent organic frameworks (2D-COF) based on a building block of tetraphenylethylene are successfully developed. Bicarbazole and pyrene moieties are resp. coupled with 4,4′,4′′,4′′′-(ethane-1,1,2,2-tetrayl)tetranilino (ETTA) via [4 + 4] solvothermal condensation conditions of 3,3′,6,6′-tetraformyl-9,9′-bicarbazole (Car-4CHO) and 1,3,6,8-tetrakis(4-formylphenyl)pyrene (TFPPy) to afford Car-ETTA and TFPPy-ETTA COFs. According to thermogravimetric anal. (TGA), powder X-ray diffraction (PXRD), and N2 adsorption and desorption measurements, both Car-ETTA and TFPPy-ETTA COFs exhibit excellent thermal stability, highly crystalline structure, and high sp. surface area, resp. These findings are supported by force field and ab initio calculations Furthermore, successful applications of these COFs in perovskite solar cells (PVSCs) are demonstrated owing to their well-conjugated properties and π-π interactions. While serving as interlayers in the devices, these COFs could effectively promote the interfacial charge dynamic to further optimize the resulting performance. Besides, certain interaction between COFs and perovskite also leads to an improved morphol. and crystallinity of the perovskite layer, presenting defect passivation capability. As a result, it is shown that the performance of the COF-modified PVSC could be improved from 17.40-19.80%. After reading the article, we found that the author used 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

Parker, Rachel R.; Liu, Denghui; Yu, Xiankang; Whitwood, Adrian C.; Zhu, Weiguo; Williams, J. A. Gareth; Wang, Yafei; Lynam, Jason M.; Bruce, Duncan W. published an article in 2021. The article was titled 《Synthesis, mesomorphism, photophysics and device performance of liquid-crystalline pincer complexes of gold(III)》, and you may find the article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices.Related Products of 2675-79-8 The information in the text is summarized as follows:

Emissive gold(III) complexes of pincer 2,6-diphenylpyridines also bearing a phenylacetylide ligand have been modified at both the pincer and phenylacetylide to confer liquid crystalline properties, with most complexes showing a columnar hexagonal phase in the condensed phase. Solution NMR studies show a preferred orientation for self-association, consistent with structural parameters in the liquid crystal phase obtained by X-ray methods. While the pattern of substitution of the phenylacetylide has no discernible effect on the photophysics, when two alkoxy chains are attached to the pincer ligands, photoluminescence quantum yields (PLQY) of around 3% are found, whereas when four alkoxy chains are attached the PLQY increases significantly to 36%. Insight from computational chem. indicated that the incorporation of the alkoxy donor groups raises the energy of the pincer-based HOMO-1 orbital, with a concomitant lowering of the LUMO ← HOMO-1 transition energy, consistent with an exptl. observed red shift. The gold complexes were fabricated into OLED devices using solution processing methods, being doped into the emissive layer at 5%, leading to external quantum efficiencies of up to 7.14%, values that compare well with those of related complexes in the literature. In addition to this study using 1-Bromo-3,4,5-trimethoxybenzene, there are many other studies that have used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Related Products of 2675-79-8) was used in this study.

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Related Products of 2675-79-81-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Feriancova, Lucia; Cigan, Marek; Kozisek, Jozef; Gmucova, Katarina; Nadazdy, Vojtech; Dubaj, Tibor; Sobota, Michal; Novota, Miroslav; Weis, Martin; Putala, Martin published an article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The title of the article was 《Dithienylnaphthalenes and quaterthiophenes substituted with electron-withdrawing groups as n-type organic semiconductors for organic field-effect transistors》.SDS of cas: 3141-27-3 The author mentioned the following in the article:

The authors report a successful design strategy for n-type semiconductor materials based on an analogy with efficient p-type semiconductors, by introducing electron-withdrawing groups while maintaining the symmetry of the mols. upon omitting one thiophene unit on each side of the oligoaryl core. Two series of dithienylnaphthalenes and quaterthiophenes substituted with various electron-withdrawing groups have been synthesized using Suzuki or Stille cross-coupling, and Knoevenagel condensation as key steps. The comparison of theor. and exptl. mol. properties related to the effect of electron-withdrawing groups is presented. Both the DFT-calculated and exptl. determined values of the energy gap between frontier orbitals have shown a decreasing trend in the order of perfluoroalkyl, acyl, perfluoroacyl, nitro, alkyldicyanovinyl and perfluoroalkyldicyanovinyl in both series. The x-ray anal. of five derivatives revealed almost planar geometry of the oligoaryl core with a herringbone or lamellar packing motif. The crystal structures of quaterthiophenes exhibited an s-cis conformation between the outer thiophenes in the crystals, in contrast to the theor. prediction. Carbonyl-based compounds showed n-type behavior as an active layer in OFET devices with an electron mobility of up to 0.57 cm2 V-1 s-1. The results came from multiple reactions, including the reaction of 2,5-Dibromothiophene(cas: 3141-27-3SDS of cas: 3141-27-3)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.SDS of cas: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Triphenylamine- and triazine-containing hydrogen bonded complexes: liquid crystalline supramolecular semiconductors》 was written by Feringan, Beatriz; Termine, Roberto; Golemme, Attilio; Granadino-Roldan, Jose M.; Navarro, Amparo; Gimenez, Raquel; Sierra, Teresa. Formula: C9H11BrO3This research focused ontriphenylamine triazine complex preparation liquid crystal supramol semiconductor. The article conveys some information:

It was reported that triphenylamine liquid crystals can attain very high hole mobility values in a hexagonal columnar mesophase, up to μ ≈ 5 cm2 V-1 s-1. The columnar liquid crystalline phase was obtained by a proper design of a supramol. mesogen, and this was unprecedented for triphenylamine liquid crystals. In fact, the supramols. were formed by hydrogen-bonded 1 : 3 complexes of a star-shaped triazine core and three triphenylamine peripheral units. The resulting hexagonal columnar mesophase acted as a successful scaffold that confines TPA units at the periphery of columns. Challenging DFT theor. investigations into a model based on such supramol. systems involving a large number of atoms were undertaken to explore the stability and geometry of the complexes and their electronic properties. After reading the article, we found that the author used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Formula: C9H11BrO3)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Formula: C9H11BrO31-Bromo-3,4,5-trimethoxybenzene can be used to synthesize analogs of HA14-1, which shows promising anticancer properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《A highly fluorescent covalent organic framework as a hydrogen chloride sensor: roles of Schiff base bonding and π-stacking》 was written by El-Mahdy, Ahmed F. M.; Lai, Ming-Yi; Kuo, Shiao-Wei. Reference of 3,6-Dibromo-9H-carbazole And the article was included in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2020. The article conveys some information:

In this paper we report the extremely crystalline structures, high thermal stabilities, and strong fluorescence emissions of covalent organic frameworks (COFs) based on linked carbazole units. We have synthesized three stable luminescent carbazole-linked COFs, namely, BCTB-PD, BCTA-TP, and BCTB-BCTA, through Schiff base condensations of 4,4′,4′′,4′′′-([9,9′-bicarbazole]-3,3′,6,6′-tetrayl)tetrabenzaldehyde (BCTB-4CHO) with p-phenylenediamine (PD), of 4,4′,4′′,4′′′-([9,9′-bicarbazole]-3,3′,6,6′-tetrayl)tetraaniline (BCTA-4NH2) with terephthalaldehyde (TP), and of BCTB-4CHO with BCTA-4NH2, resp. These COFs had large Brunauer-Emmett-Teller surface areas (up to 2212 m2 g-1) and outstanding thermal stabilities (decomposition temperatures of up to 566°). Interestingly, the intramol. charge transfer (ICT) and fluorescence properties of these COFs were strongly influenced by their types of Schiff base bonding (BCTB-4CH=N or BCTA-4N=CH) and the degrees of π-stacking between their COF layers. For example, ICT from the electron-donating carbazole group to the acceptor through the Schiff base units of the type BCTB-4CH=N and increasing the π-stacking distance enhanced the fluorescence emission from the COF. Moreover, BCTB-BCTA, the most fluorescent of our three COFs, functioned as a fluorescent chemosensor for HCl in solution, with outstanding sensitivity and a rapid response. The experimental part of the paper was very detailed, including the reaction process of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Reference 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 as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Reference of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary