Tag: 300-400

Liu, Shanting; Yang, Yue; Deng, Dian-dian; Deng, Xiao-wen; Chen, Zhao; Wang, Xiao-Yan; Pu, Shouzhi published an article in 2022. The article was titled 《Highly emissive D-A-π-D type aggregation-induced emission (AIE) or aggregation-induced emission enhancement (AIEE)-active benzothiadiazole derivatives with contrasting mechanofluorochromic features》, and you may find the article in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy.Product Details of 523-27-3 The information in the text is summarized as follows:

Mechanochromic luminophors with strong solid-state emission are promising candidates for high-contrast mechanochromic luminescence materials. Meanwhile, mech. responsive luminogenic mols. with tricolor switching are highly desirable but are seldom reported. In this work, three anthracene-based donor-acceptor-π-donor (D-A-π-D) type benzothiadiazole derivatives were designed and synthesized. These luminogens showed remarkable aggregation-induced emission (AIE) or aggregation-induced emission enhancement (AIEE) effect. Furthermore, these luminogens exhibited bright and different solid state fluorescence involving yellow-green, yellow and orange colors, and the fluorescence of their solids could be effectively regulated by mech. grinding. For luminogen I, its solid displayed reversible two-color mechanofluorochromic property. As for luminogens II and III, their solids displayed fluorescent colors change from yellow to yellow-green upon slight grinding, and the yellow-green light-emitting solids were converted into orange fluorescent solids after heavy grinding, demonstrating interesting three-color mechanofluorochromism features.9,10-Dibromoanthracene(cas: 523-27-3Product Details of 523-27-3) was used in this study.

9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Product Details of 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Extractive desulfurization of fuel with methyltriphenyl phosphonium bromide- tetraethylene glycol-based eutectic solvents》 was written by Sudhir, Nisha; Yadav, Pooja; Nautiyal, B. R.; Singh, Rakesh; Rastogi, Harsh; Chauhan, Himani. Product Details of 1779-49-3 And the article was included in Separation Science and Technology (Philadelphia, PA, United States) in 2020. The article conveys some information:

In this investigation, we synthesized deep eutectic solvents (DESs) based on methyltriphenyl phosphonium bromide/tetra ethylene glycol (MTPPBr/TetEG) in different molar ratios ranging 1:2, 1:3, 1:4, and 1:6 and characterized by FTIR. The densities and viscosities were also measured at different temperatures Dibenzothiophene (DBT) was extracted using the synthesized DES. Results concluded that at a single stage extraction, a 45% reduction of DBT sulfur compounds from model oil was found even at low-temperature 20°C. In addition to this study using Methyltriphenylphosphonium bromide, there are many other studies that have used Methyltriphenylphosphonium bromide(cas: 1779-49-3Product Details of 1779-49-3) was used in this study.

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.Product Details of 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wan, Pui-Ki; Tong, Ka-Chung; Lok, Chun-Nam; Zhang, Chunlei; Chang, Xiao-Yong; Sze, Kong-Hung; Tsai Wong, Alice Sze; Che, Chi-Ming published an article in 2021. The article was titled 《Platinum(II) N-heterocyclic carbene complexes arrest metastatic tumor growth》, and you may find the article in Proceedings of the National Academy of Sciences of the United States of America.Electric Literature of C13H17BrO9 The information in the text is summarized as follows:

Platinum cationic arylbipyridine cyclometalated NHC complexes, substituted with hydroxyalkyl and carbohydrate groups, were prepared as antitumor agents effective against metastatic and cisplatin-resistant cancers. Vimentin is a cytoskeletal intermediate filament protein that plays pivotal roles in tumor initiation, progression, and metastasis, and its overexpression in aggressive cancers predicted poor prognosis. Herein described is a highly effective antitumor and antimetastatic metal complex [Pt(C-N-N)(NHC)][PF6] (1a; HC-N-N = 6-phenyl-2,2′-bipyridine; NHC = 1,3-dibutyl-2-imidazolylidene) that engages vimentin via noncovalent binding interactions with a distinct orthogonal structural scaffold. The complex 1a displays vimentin-binding affinity with a dissociation constant of 1.06μM from surface plasmon resonance measurements and fits into a pocket between the coiled coils of the rod domain of vimentin with multiple hydrophobic interactions. It engages vimentin in cellulo, disrupts vimentin cytoskeleton, reduces vimentin expression in tumors, suppresses xenograft growth and metastasis in different mouse models, and is well tolerated, attributable to biotransformation to less toxic and renal-clearable platinum(II) species. Our studies uncovered the practical therapeutic potential of platinum(II)-NHC complexes as effective targeted chemotherapy for combating metastatic and cisplatin-resistant cancers.(2R,3R,4S,5S,6S)-2-Bromo-6-(methoxycarbonyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate(cas: 21085-72-3Electric Literature of C13H17BrO9) was used in this study.

(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.Electric Literature of C13H17BrO9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Exciton efficiency beyond the spin statistical limit in organic light emitting diodes based on anthracene derivatives》 was written by Sharma, Nidhi; Wong, Michael Yin; Hall, David; Spuling, Eduard; Tenopala-Carmona, Francisco; Privitera, Alberto; Copley, Graeme; Cordes, David B.; Slawin, Alexandra M. Z.; Murawski, Caroline; Gather, Malte C.; Beljonne, David; Olivier, Yoann; Samuel, Ifor D. W.; Zysman-Colman, Eli. Related Products of 523-27-3 And the article was included in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2020. The article conveys some information:

We report two donor-acceptor (D-A) materials based on a cyanoanthracene acceptor paired with diphenylamine (DPAAnCN) and carbazole (CzAnCN) donor moieties. These compounds show hybrid locally excited (LE) charge-transfer (CT) excited states (HLCT), which we demonstrated through a combined photophys. and computational study. Vacuum-deposited organic light emitting diodes ( OLEDs ) using these HLCT emitters exhibit maximum external quantum efficiencies (EQEmax) close to 6%, with impressive exciton utilization efficiency (Φs) of >50%, far exceeding the spin statistic limit of 25%. We rule out triplet-triplet annihilation and thermally activated delayed fluorescence as triplet harvesting mechanisms along with horizontal orientation of emitters to enhance light outcoupling and, instead, propose a “”hot exciton”” channel involving the nearly isoenergetic T2 and S1 states. In addition to this study using 9,10-Dibromoanthracene, there are many other studies that have used 9,10-Dibromoanthracene(cas: 523-27-3Related Products of 523-27-3) was used in this study.

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%.Related Products of 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of C14H8Br2In 2022 ,《Harnessing near-infrared light via S0 to T1 sensitizer excitation in a molecular photon upconversion solar cell》 was published in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The article was written by Beery, Drake; Arcidiacono, Ashley; Wheeler, Jonathan P.; Chen, Jiaqi; Hanson, Kenneth. The article contains the following contents:

Integrating mol. photon upconversion via triplet-triplet annihilation (TTA-UC) directly into a solar cell offers a means of harnessing sub-bandgap, near IR (NIR) photons and surpassing the Shockley-Queisser limit. However, all integrated TTA-UC solar cells to date only harness visible light. Here, we incorporate an osmium polypyridal complex (Os) as the triplet sensitizer in a metal ion linked multilayer photoanode that is capable of harnessing NIR light via S0 to T1* excitation, triple energy transfer to a phosphonated bis(9,10-diphenylethynyl)anthracene annihilator (A), TTA-UC, and electron injection into TiO2 from the upcoverted state. The TiO2-A-Zn-Os devices have five-fold higher photocurrent (∼3.5 μA cm-2) than the sum of their parts. IPCE data and excitation intensity dependent measurements indicate that the NIR photons are harvested through a TTA-UC mechanism. Transient absorption spectroscopy is used to show that the low photocurrent, as compared to visible light harnessing TTA-UC solar cells, can be atributed to: (1) slow sensitizer to annihilator triplet energy transfer, (2) a low injection yield for the annihilator, and (3) fast back energy transfer from the upconverted state to the sensitizer. Regardless, these results serve as a proof-of-concept that NIR photons can be harnessed via an S0 to T1* sensitizer excited, integrated TTA-UC solar cell and that further improvements can readily be made by remedying the performance limiting processes noted above. In addition to this study using 9,10-Dibromoanthracene, there are many other studies that have used 9,10-Dibromoanthracene(cas: 523-27-3Electric Literature of C14H8Br2) was used in this study.

9,10-Dibromoanthracene(cas: 523-27-3) is a dibrominated polycyclic aromatic hydrocarbon (PAH). 9,10-Dibromoanthracene is often used as an energy acceptor and activator in reactions that produce chemiluminescence.Electric Literature of C14H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Ran, Qidi; Zhang, Yan; Yang, Jun; He, Rongxing; Zhou, Lei; Hu, Shanshan published an article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The title of the article was 《White-light defect emission and enhanced photoluminescence efficiency in a 0D indium-based metal halide》.COA of Formula: Br3In The author mentioned the following in the article:

Low-dimensional ns2-metal halide compounds with confined structures and localized electronic states have received considerable attention due to their superior luminescence properties, while the intriguing photophys. dynamics of metal halides without ns2 electrons is still elusive and has yet to be studied. A novel In3+-based (C6H8N)6InBr9 single crystal (C6H8N = anilinium) that exhibits intrinsic white-light emission at room temperature was developed. Such white light stems from multiple defect states owing to the presence of Br vacancies, which however delivers a low luminescence quantum yield (PLQY) (2.72%) due to a severe thermal quenching effect. To improve the luminescence efficiency, the Sb3+ ion with a 5s2 lone pair was embedded into the lattice, which leads to broadband orange emission with a high PLQY of ≤71.84%. The enhanced PL efficiency results from efficient triplet self-trapped excitons (STEs) in the (SbBr6)3- octahedron and the energy transfer from defect states to STE states. This work not only sheds light on the mechanism of defect-related white-light emission, but provides a successful strategy for designing novel materials with excellent PL properties for versatile optical applications. In the experimental materials used by the author, we found Indium(III) bromide(cas: 13465-09-3COA of Formula: Br3In)

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.COA of Formula: Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Xinyu; Zhang, Tong; Han, Yanning; Chen, Qiao; Li, Chengpeng; Xue, Pengchong published an article in 2021. The article was titled 《Multi-responsive fluorescent switches and iodine capture of porous hydrogen-bonded self-assemblies》, and you may find the article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices.Electric Literature of C14H8Br2 The information in the text is summarized as follows:

A four-armed divinylanthracene derivative was designed and synthesized to construct multifunctional porous self-assemblies. It could form stable supramol. gels, and its fluorescence gradually increased during gelation, exhibiting aggregation-induced emission enhancement. SEM, TEM, BET and mol. simulation suggested that gelators stacked to form one-dimensional porous nanoribbons by multiple hydrogen bonds. The xerogel film might change the fluorescence from green to yellow under force stimuli because of the enhanced π-stacking and recover its fluorescence after solvent annealing. Moreover, fluorescent films acting as sensing materials were applied in the quant. detection of gaseous nitrobenzene and the detection limit reached 1.5 ppb. The sensing film was not sensitive to the gases of common organic solvents. More interestingly, the solids composed of porous nanoribbons might efficiently capture iodine in aqueous and gaseous states, and could be recycled many times. In addition to this study using 9,10-Dibromoanthracene, there are many other studies that have used 9,10-Dibromoanthracene(cas: 523-27-3Electric Literature of C14H8Br2) was used in this study.

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

Gao, Mile; Mai, Van T. N.; Jang, Junhyuk; Ranasinghe, Chandana Sampath Kumara; Chu, Ronan; Burn, Paul L.; Gentle, Ian R.; Pivrikas, Almantas; Shaw, Paul E. published their research in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2021. The article was titled 《Effect of dendron structure on the luminescent and charge transporting properties of solution processed dendrimer-based OLEDs》.COA of Formula: C12H7Br2N The article contains the following contents:

The photophys. and charge transport properties of neat and blend films of fac-tris[2-phenylpyridinato-C2,N]iridium(III) [Ir(ppy)3]-cored light-emitting dendrimers and tris(4-carbazoyl-9-ylphenyl)amine (TCTA)-based hosts, with each combination having the same first generation dendrons were measured and compared. The first generation dendrons were composed of bis(fluorenyl)carbazolyl with Pr surface groups, or biphenyl with 2-ethylhexyloxy or t-Bu surface groups. Dendronisation of the emitter and host was found to decrease the energy transfer efficiency from the host to the guest relative to an evaporated Ir(ppy)3:TCTA blend film, with the blend composed of materials with biphenyl dendrons and t-Bu surface groups having the largest decrease. The hole mobilities of the solution processed neat and blend layers were found to be 1-2 orders of magnitude lower than those of the equivalent evaporated films. The blend film containing the host and dendrimer with first generation biphenyl dendrons and 2-ethylhexyloxy surface groups had the highest photoluminescence quantum yield (PLQY), comparable to evaporated Ir(ppy)3:TCTA-based films but the lowest hole mobility (≈10-8 cm2 V-1 s-1). In contrast, the blend with the dendrimers composed of the bis(fluorenyl)carbazolyl dendrons with Pr surface groups had a low PLQY but higher hole mobility. It was found for the combinations of these solution processable materials that the hole mobility of the blend film was the limiting factor in OLED performance. Devices containing an emissive layer of the materials with the bis(fluorenyl)carbazolyl dendrons with Pr surface groups (11 mol percent of the emitter) had a PLQY of 40.8% but the highest external quantum efficiency of 10.0 ± 0.4%, reaching a maximum luminance of almost 10 000 cd m-2. In the experimental materials used by the author, we found 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

《Dual mode selective detection and differentiation of TNT from other nitroaromatic compounds》 was written by Goudappagouda; Dongre, Sangram D.; Das, Tamal; Santhosh Babu, Sukumaran. Reference of 9,10-Dibromoanthracene And the article was included in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. The article conveys some information:

Selective detection of explosives, especially TNT, is a highly desirable area of research and various explosives detection devices including fluorescent sensors are already in place. However, multi-mode sensors will be more useful and reliable than conventional fluorescent “”Turn Off”” sensors. One of the challenges is the development of selective sensors to prevent illegal transport of commonly used explosive TNT through on-the-spot anal. In this context, a fluorescent polymer-based selective detection is reported of TNT using both fluorometric and colorimetric signals. In addition, colorimetric differentiation of TNT from other nitroarom. compounds is made possible by complexing with various amines. Even though many other sensors are available for TNT, the current demonstration is unique in terms of selectivity, sensitivity, reliability, portability, and rapidity of results. The as-developed explosive detection kit can be useful in both civilian and military operations to trace the illegal transport of TNT as well as for post-explosion anal. In the part of experimental materials, we found many familiar compounds, such as 9,10-Dibromoanthracene(cas: 523-27-3Reference of 9,10-Dibromoanthracene)

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%.Reference of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Extrinsic vs. intrinsic luminescence and their interplay with spin crossover in 3D Hofmann-type coordination polymers》 was written by Meneses-Sanchez, Manuel; Pineiro-Lopez, Lucia; Delgado, Teresa; Bartual-Murgui, Carlos; Munoz, M. Carmen; Chakraborty, Pradip; Real, Jose Antonio. Reference of 9,10-Dibromoanthracene And the article was included in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2020. The article conveys some information:

The research of new multifunctional materials, as those undergoing spin crossover (SCO) and luminescent properties, is extremely important in the development of further optical and electronic switching devices. As a new step towards this ambitious aim, the coupling of SCO and fluorescence is presented here following two main strategies: whether the fluorescent agent is integrated as a part of the main structure of a 3D SCO coordination polymer {FeII(bpan)[MI(CN)2]2} (bpan = bis(4-pyridyl)anthracene, MI = Ag (FebpanAg), Au (FebpanAu)) or is a guest mol. inserted within the cavities of the 3D switchable framework {FeII(bpb)[MI(CN)2]2}·pyrene (bpb = bis(4-pyridyl)butadiyne, MI = Ag (FebpbAg·Pyr), Au (FebpbAu·Pyr)). The magnetic, calorimetric, structural, UV-visible absorption and fluorescent characterizations were performed confirming the occurrence of a SCO-fluorescence interplay in the studied compounds Moreover, the relevance of the intrinsic or extrinsic nature of the luminescence on the efficiency of the interplay is discussed on the basis of the available information. The results came from multiple reactions, including the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Reference of 9,10-Dibromoanthracene)

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%.Reference of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary