Tag: 300-400

SDS of cas: 6825-20-3In 2020 ,《Dual-Function Fluorescent Covalent Organic Frameworks: HCl Sensing and Photocatalytic H2 Evolution from Water》 appeared in Advanced Optical Materials. The author of the article were EL-Mahdy, Ahmed F. M.; Elewa, Ahmed M.; Huang, Sheng-Wen; Chou, Ho-Hsiu; Kuo, Shiao-Wei. The article conveys some information:

Two ultrastable luminescent covalent organic frameworks (COFs), PyTA-BC and PyTA-BC-Ph, are synthesized through polycondensations of 4,4′,4”,4”’-pyrene-1,3,6,8-tetrayltetraaniline (PyTA-4NH2) with two carbazole-based derivatives having different degrees of conjugation. The PyTA-BC and PyTA-BC-Ph COFs exhibit ultrahigh thermal stabilities (up to 421°C), excellent crystallinity, and high Brunauer-Emmett-Teller surface areas (up to 1445 m2 g-1). These COFs display strong fluorescence emissions in various solvents, with their emission maxima gradually red-shifting upon increasing the polarity of the solvent (solvatochromism). Upon exposure to HCl, they respond very rapidly and sensitively in terms of changing their colors and fluorescence emission maxima. In the presence of a sacrificial electron donor, these COFs mediate the highly efficient photocatalytic evolution of H2 from water. In the absence of a noble metal cocatalyst, the COFs and ascorbic acid provide a photocatalytic H2 production of up to 1183μmol g-1 h-1 (λ ≥ 420 nm); this value is the highest reported to date for a COF. Such COFs appear to be potentially useful as chemosensors for the naked-eye and sensitive spectroscopic detection of HCl and as cocatalysts for the sustainable photocatalytic production of H2 from water.3,6-Dibromo-9H-carbazole(cas: 6825-20-3SDS of cas: 6825-20-3) was used in this study.

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.SDS of cas: 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Product Details of 21085-72-3In 2019 ,《Extended scaffold glucuronides: en route to the universal synthesis of O-aryl glucuronide prodrugs》 appeared in Organic & Biomolecular Chemistry. The author of the article were Walther, Raoul; Jarlstad Olesen, Morten T.; Zelikin, Alexander N.. The article conveys some information:

We demonstrate that an extended scaffold based on a self-immolative linker (SIL) enables the universal production of O-aryl glucuronide prodrugs: high yield glucuronidation is performed on a precursor substrate (SIL) and the subsequent drug conjugation proceeds via less challenging chem. reactions. The results came from multiple reactions, including the reaction of (2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Product Details of 21085-72-3)

(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3) may be used for the synthesis of HMR1098-S-Glucuronide Methyl Ester, a new K-ATP-blocking agent being developed as a drug for prevention of sudden cardiac death.Product Details of 21085-72-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 1779-49-3In 2019 ,《A quantitative prediction of the viscosity of amine based DESs using Sσ-profile molecular descriptors》 appeared in Journal of Molecular Structure. The author of the article were Benguerba, Yacine; Alnashef, Inas M.; Erto, Alessandro; Balsamo, Marco; Ernst, Barbara. The article conveys some information:

In recent years, the preparation of deep eutectic solvents (DESs) using amines as H bond donors (HBD) was reported by several research groups. One of the potential use of this type of DESs is in the field of CO2 capture, where the viscosity of the solvent before and after the absorption is of paramount importance. Since the number of possible combinations of DESs is huge, a math. model for the predicting of the viscosity of DESs at different temperatures is very important. A new math. model for the prediction of amine-based DESs viscosities using the quant. structure property relations (QSPR) approach is presented. A combination of multilinear regression (MLR) and artificial neural networks (ANN) methods is used for the development of the model. A data set of 108 exptl. measurements of viscosity of 5 amines-based DESs, taken from the literature, is used for the development and subsequent verification of the model. The more appropriate model is determined by a dedicated statistical anal., in which the most significant descriptors are preliminary determined The proposed models are able to predict the DESs viscosities with very high accuracy, i.e. with a R2 value of 0.9975 in training and 0.9863 for validation using the ANN model and R2 value of 0.9305 for the MLR model. The retrieved model can be considered as a very reliable tool for the prediction of DESs viscosity when exptl. data are absent. In turn, this can provide useful guidelines for the synthesis of low-viscosity DESs able to minimize energy requirements associated to their processing (e.g. power required for pumps), thus fostering their industrial-scale implementation. In the experiment, the researchers used many compounds, for example, Methyltriphenylphosphonium bromide(cas: 1779-49-3Related Products of 1779-49-3)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is a lipophilic molecule with a cation allowing for it to be used to deliver molecules to specific cell components. Also considered an antineoplastic agent.Related Products of 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Sun, Bin; Najarian, Amin Morteza; Sagar, Laxmi Kishore; Biondi, Margherita; Choi, Min-Jae; Li, Xiyan; Levina, Larissa; Baek, Se-Woong; Zheng, Chao; Lee, Seungjin; Kirmani, Ahmad R.; Sabatini, Randy; Abed, Jehad; Liu, Mengxia; Vafaie, Maral; Li, Peicheng; Richter, Lee J.; Voznyy, Oleksandr; Chekini, Mahshid; Lu, Zheng-Hong; Garcia de Arquer, F. Pelayo; Sargent, Edward H. published an article in Advanced Materials (Weinheim, Germany). The title of the article was 《Fast Near-Infrared Photodetection Using III-V Colloidal Quantum Dots》.Name: Indium(III) bromide The author mentioned the following in the article:

Colloidal quantum dots (CQDs) are promising materials for IR (IR) light detection due to their tunable bandgap and their solution processing; however, to date, the time response of CQD IR photodiodes is inferior to that provided by Si and InGaAs. It is reasoned that the high permittivity of II-VI CQDs leads to slow charge extraction due to screening and capacitance, whereas III-Vs-if their surface chem. can be mastered-offer a low permittivity and thus increase potential for high-speed operation. In initial studies, it is found that the covalent character in indium arsenide (InAs) leads to imbalanced charge transport, the result of unpassivated surfaces, and uncontrolled heavy doping. Surface management using amphoteric ligand coordination is reported, and it is found that the approach addresses simultaneously the In and As surface dangling bonds. The new InAs CQD solids combine high mobility (0.04 cm2 V-1 s-1) with a 4x reduction in permittivity compared to PbS CQDs. The resulting photodiodes achieve a response time faster than 2 ns-the fastest photodiode among previously reported CQD photodiodes-combined with an external quantum efficiency (EQE) of 30% at 940 nm. In the experiment, the researchers used Indium(III) bromide(cas: 13465-09-3Name: Indium(III) bromide)

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Name: Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Hayyan, Adeeb; Hizaddin, Hanee F.; Abed, Khalid M.; Mjalli, Farouq S.; Hashim, Mohd Ali; Abo-Hamad, Ali; Saleh, Jehad; Aljohani, Abdullah S. M.; Alharbi, Yousef M.; Alhumaydhi, Fahad A.; Ahmad, Abdul Aziz; Yeow, Andrew T. H.; Aldeehani, Ahmaad Kadmouse; Alajmi, Falah D. H.; Al Nashef, Inas published an article in Biomass Conversion and Biorefinery. The title of the article was 《Encapsulated deep eutectic solvent for esterification of free fatty acid》.Recommanded Product: 1779-49-3 The author mentioned the following in the article:

Abstract: A novel encapsulated deep eutectic solvent (DES) was introduced for biodiesel production via a two-step process. The DES was encapsulated in medical capsules and were used to reduce the free fatty acid (FFA) content of acidic crude palm oil (ACPO) to the min. acceptable level (< 1). The DES was synthesized from methyltriphenylphosphonium bromide (MTPB) and p-toluenesulfonic acid (PTSA). The effects pertaining to different operating conditions such as capsule dosage, reaction time, molar ratio, and reaction temperature were optimized. The FFA content of ACPO was reduced from existing 9.61to less than 1under optimum operating conditions. This indicated that encapsulated MTPB-DES performed high catalytic activity in FFA esterification reaction and showed considerable activity even after four consecutive recycling runs. The produced biodiesel after acid esterification and alk. transesterification met the EN14214 international biodiesel standard specifications. To our best knowledge, this is the first study to introduce an acidic catalyst in capsule form. This method presents a new route for the safe storage of new materials to be used for biofuel production Conductor-like screening model for real solvents (COSMO-RS) representation of the DES using σ-profile and σ-potential graphs indicated that MTPB and PTSA is a compatible combination due to the balanced presence and affinity towards hydrogen bond donor and hydrogen bond acceptor in each constituent.Methyltriphenylphosphonium bromide(cas: 1779-49-3Recommanded Product: 1779-49-3) was used in this study.

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is an organophosphorus compound, with potential use as a precursor and a solvent in organic synthesis. And it is used widely for methylenation via the Wittig reaction.Recommanded Product: 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Gharpure, Santosh J.; Hande, Pankaj E.; Pandey, Surya K.; Samala, Ganesh published their research in Journal of Organic Chemistry in 2021. The article was titled 《TMSOTf-mediated formal [4 + 2] cycloaddition-retro-aza-Michael cascade of vinylogous carbamates for the synthesis of highly fluorescent pyridocarbazoles》.Recommanded Product: 3,6-Dibromo-9H-carbazole The article contains the following contents:

Trimethylsilyl trifluoromethanesulfonate (TMSOTf) mediated dimerization reaction of vinylogous carbamates of carbazoles gave highly fluorescent pyridocarbazoles through Povarov-type formal [4 + 2] cycloaddition-retro-aza-Michael cascade. The developed strategy was used to access indolo pyridocarbazole and quinolizinocarbazolone in an expeditious manner. Various coupling reactions were successfully performed on synthesized pyridocarbazoles to study the effect of electronics of substitution on photophys. properties. Synthesized carbazoles possess excellent photophys. properties with high quantum yields (ΦF). Fluorescent carbazole dicarboxylic acid showed potential as pH probe giving linear response to pH over a very wide range (7.0-3.0) reflecting high efficiency. In the experiment, the researchers used many compounds, for example, 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 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.Recommanded Product: 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Nickel/Photo-Cocatalyzed Asymmetric Acyl-Carbamoylation of Alkenes》 was written by Fan, Pei; Lan, Yun; Zhang, Chang; Wang, Chuan. Recommanded Product: 1779-49-3 And the article was included in Journal of the American Chemical Society in 2020. The article conveys some information:

An unprecedented asym. acyl-carbamoylation of pendant alkenes tethered on aryl carbamic chlorides with both aliphatic and aromatic aldehydes has been developed via the cooperative catalysis of a chiral nickel-PHOX complex and tetrabutylammonium decatungstate. This reaction represents the first example of merging hydrogen-atom-transfer photochem. and asym. transition metal catalysis in difunctionalization of alkenes. Using this protocol, a variety of oxindoles bearing a challenging quaternary stereogenic center are furnished under mild conditions in highly enantioselective manner. In the experiment, the researchers used Methyltriphenylphosphonium bromide(cas: 1779-49-3Recommanded Product: 1779-49-3)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is a lipophilic molecule with a cation allowing for it to be used to deliver molecules to specific cell components. Also considered an antineoplastic agent.Recommanded Product: 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Xu, Kaidi; Li, Bin; Yao, Shibo; Li, Zhaoxian; Lu, Yunfeng; Dong, Ming; Qiu, Jianfeng; Luo, Liqiang; Li, Chunju published an article in Angewandte Chemie, International Edition. The title of the article was 《Modular Introduction of endo-Binding Sites in a Macrocyclic Cavity towards Selective Recognition of Neutral Azacycles》.Electric Literature of C14H8Br2 The author mentioned the following in the article:

Macrocycles with a functionalized interior, which is a general cavity feature of bioreceptors, are relatively hard to synthesize. Here authors report a modular strategy to customize diverse endo-binding sites in the macrocycle cavity. Only two steps are needed. First, one V-shaped functional module bearing an embedded binding site and two 2,5-dimethoxyphenyls as reaction modules are connected. Then the condensation of the resulting monomer and paraformaldehyde directly produces the designed macrocycle. V-shaped monomers are deliberately used to guarantee the binding sites equatorially directing inward into the cavity and 2,5-dimethoxyphenyls standing axially as macrocycle sidewalls. More than a dozen endo-functionalized macrocyclic receptors have been constructed. Host-guest complexation studies show that interior OH moieties in macrocycle I can strongly encapsulate neutral azacycles by forming inner hydrogen bonds, giving a high association constant of 4.59×104 M-1 in non-polar media. The results came from multiple reactions, including the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Electric Literature of C14H8Br2)

9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.Electric Literature of C14H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Teng, Jin-Ming; Zhang, Da-Wei; Wang, Yin-Feng; Chen, Chuan-Feng published an article in ACS Applied Materials & Interfaces. The title of the article was 《Chiral Conjugated Thermally Activated Delayed Fluorescent Polymers for Highly Efficient Circularly Polarized Polymer Light-Emitting Diodes》.Safety of 3,6-Dibromo-9H-carbazole The author mentioned the following in the article:

Two novel chiral conjugated polymers R-P and S-P designed and synthesized from a pair of circularly polarized thermally activated delayed fluorescence (CP-TADF) enantiomers are presented in this work. The two polymers exhibited excellent TADF properties with small singlet-triplet energy gaps (ΔEST) of 0.045 and 0.061 eV and relatively high photoluminescence quantum yields (PLQYs) of 72 and 76%, resp. Besides, intense mirror-image circularly polarized luminescence signals were detected from R-P and S-P in both solution and film states with dissymmetry factors (|glum|) of up to 1.9 x 10-3. Furthermore, solution-processed circularly polarized polymer light-emitting diodes (CP-PLEDs) fabricated with R-P and S-P achieved high maximum external quantum efficiencies of 14.9 and 15.8% and high maximum brightness (Lmax) of 8940 and 12,180 cd/m2 with yellowish-green emission peaks at 546 and 544 nm, resp. Moreover, intense circularly polarized electroluminescence signals with electroluminescence dissymmetry factors (gEL) of -1.5 x 10-3 and +1.6 x 10-3 were detected from the CP-PLED devices fabricated with R-P and S-P, resp. The results came from multiple reactions, including the reaction of 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 as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Safety of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Yan; Chen, Xiao-Lan; Li, Xiao-Yun; Zhu, Shan-Shan; Li, Shi-Jun; Song, Yan; Qu, Ling-Bo; Yu, Bing published an article in 2021. The article was titled 《4CzIPN-tBu-Catalyzed Proton-Coupled Electron Transfer for Photosynthesis of Phosphorylated N-Heteroaromatics》, and you may find the article in Journal of the American Chemical Society.Quality Control of 3,6-Dibromo-9H-carbazole The information in the text is summarized as follows:

2,4,5,6-Tetrakis(3,6-di-tert-butyl-9H-carbazol-9-yl)isophthalonitrile (4CzIPN-tBu) was developed as a photocatalyst for the phosphorus-radical-initiated cascade cyclization reaction of isocyanides. By using 4CzIPN-tBu as catalyst, we developed a visible-light-induced proton-coupled electron transfer strategy for the generation of phosphorus-centered radicals, via which a wide range of phosphorylated phenanthridines, quinolines, and benzothiazoles were successfully constructed. The experimental process involved the reaction of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Quality Control 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.Quality Control of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary