Month: October 2022

The author of 《Melanin-dot-mediated delivery of metallacycle for NIR-II/photoacoustic dual-modal imaging-guided chemo-photothermal synergistic therapy》 were Sun, Yue; Ding, Feng; Chen, Zhao; Zhang, Ruiping; Li, Chonglu; Xu, Yuling; Zhang, Yi; Ni, Ruidong; Li, Xiaopeng; Yang, Guangfu; Sun, Yao; Stang, Peter J.. And the article was published in Proceedings of the National Academy of Sciences of the United States of America in 2019. SDS of cas: 3395-91-3 The author mentioned the following in the article:

Discrete Pt(II) metallacycles have potential applications in biomedicine. Herein, we engineered a dual-modal imaging and chemo-photothermal therapeutic nano-agent 1 that incorporates discrete Pt(II) metallacycle 2 and fluorescent dye 3 (emission wavelength in the second near-IR channel [NIR-II]) into multifunctional melanin dots with photoacoustic signal and photothermal features. Nano-agent 1 has a good solubility, biocompatibility, and stability in vivo. Both photoacoustic imaging and NIR-II imaging in vivo confirmed that 1 can effectively accumulate at tumor sites with good signal-to-background ratio and favorable distribution. Guided by precise dual-modal imaging, nano-agent 1 exhibits a superior antitumor performance and less severe side effects compared with a single treatment because of the high efficiency of the chemo-photothermal synergistic therapy. This study shows that nano-agent 1 provides a promising multifunctional theranostic platform for potential applications in biomedicine. In the experimental materials used by the author, we found Methyl 3-bromopropanoate(cas: 3395-91-3SDS of cas: 3395-91-3)

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.SDS of cas: 3395-91-3

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

The author of 《Hydrogen-bonded molecular salts of reduced benzothiazole derivatives with carboxylates: a robust [inline formula omitted] (8) supramolecular motif (even when disordered)》 were Shaibah, Mohammed A. E.; Sagar, Belakavadi K.; Yathirajan, Hemmige S.; Cordes, David B.; Slawin, Alexandra M. Z.; Harrison, William T. A.. And the article was published in Acta Crystallographica, Section E: Crystallographic Communications in 2019. Application of 586-76-5 The author mentioned the following in the article:

The syntheses and structures of five mol. salts of protonated 4,4,7,7-tetramethyl-3a,5,6,7a-tetrahydrobenzothiazol-2-ylamine with diff. deprotonated carboxylic acids (4-methylbenzoic acid, 4-bromobenzoic acid, 3,5-dinitrobenzoic acid, fumaric acid and succinic acid) are reported. They are namely 2-amino-4,4,7,7-tetramethyl-4,5,6,7-tetrahydro-1,3-benzothiazol-3-ium 4-methylbenzoate, C11H19N2S+.C8H7O2-, (I), 2-amino-4,4,7,7-tetramethyl-4,5,6,7-tetrahydro-1,3-benzothiazol-3-ium 4-bromobenzoate, C11H19N2S+.C7H4BrO2-, (II), 2-amino-4,4,7,7-tetramethyl-4,5,6,7-tetrahydro-1,3-benzothiazol-3-ium 3,5-dinitrobenzoate, C11H19N2S+.C7H3N2O6-, (III), bis(2-amino-4,4,7,7-tetramethyl-4,5,6,7-tetrahydro-1,3-benzothiazol-3-ium) fumarate, 2C11H19N2S+.C4H2O42-,(IV), and the 1:1 co-crystal of bis(2-amino-4,4,7,7-tetramethyl-4,5,6,7-tetrahydro-1,3-benzothiazol-3-ium) succinate and 2-amino-4,4,7,7-tetramethyl-4,5,6,7-tetrahydro-1,3-benzothiazol-3-ium hydrogen succinate 4,4,7,7-tetramethyl-3a,5,6,7a-tetrahydrobenzothiazol-2-ylamine, 1.5C11H19N2S+.0.5C4H4O42-.0.5C4H5O4-.0.5C11H18N2S, (V). In every case, the cation protonation occurs at the N atom of the thiazole ring and the six-membered ring adopts a half-chair conformation (in some cases, the deviating methylene groups are disordered over two sets of sites). The C-N bond lengths of the nominal -NH+=C-NH2 fragment of the cation are indistinguishable, indicating a significant contribution of the -NH-C=N+H2 resonance form to the structure. The packing for (I)-(V) features a robust local R22(8) loop motif in which the cation forms two near-linear N-H…O hydrogen bonds from the N+-H group and syn H atom of the amine group to the carboxylate group of an adjacent anion [(V) shows disorder of one of these bonds over N-H…O and N…H-O contributors but the same R22(8) loop results for both disorder components]. The anti H atom of the -NH2 group also forms an N-H..O hydrogen bond, which results in [001] chains in (I) and (II), isolated centrosym.tetramers in (III) and [100] chains in (IV) and (V). Hirshfeld fingerprint plots and contact percentages for the different types of contacts of the cations are discussed. After reading the article, we found that the author used 4-Bromobenzoic acid(cas: 586-76-5Application of 586-76-5)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography.Application of 586-76-5 It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.

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

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

In 2019,Journal of Materials Chemistry C: Materials for Optical and Electronic Devices included an article by Chen, Qiang; Zajaczkowski, Wojciech; Seibel, Johannes; De Feyter, Steven; Pisula, Wojciech; Muellen, Klaus; Narita, Akimitsu. Recommanded Product: 2675-79-8. The article was titled 《Synthesis and helical supramolecular organization of discotic liquid crystalline dibenzo[hi,st]ovalene》. The information in the text is summarized as follows:

Dibenzo[hi,st]ovalene (DBOV) has emerged as a new polycyclic aromatic hydrocarbon (PAH) with intriguing optical properties with strong red emission. Nevertheless, DBOV derivatives thus far synthesized either had mesityl groups that hinder the π-π stacking of the aromatic cores or showed low solubility, and the self-assembly of DBOVs has not been investigated. In this work, two 3,4,5-tris(dodecyloxy)phenyl (TDOP) groups are introduced at the meso-positions of DBOV in order to enhance its solubility without compromising the intermol. interactions. The obtained DBOV-TDOP forms at elevated temperatures a discotic liquid crystalline phase. Due to π-π-stacking interactions as well as local phase separation between the aromatic cores and the flexible alkoxy side chains, the DBOV-TDOP mols. self-assemble into columnar stacks. In the low temperature phase, the space demanding TDOP substituents induce a rotation of the disks towards each other leading to an exceptionally long helical pitch within the columnar structures. Moreover, scanning tunnelling microscopy (STM) elucidates intriguing self-assembly of DBOV-TDOP at the interface of highly oriented pyrolytic graphite (HOPG) and 1-phenyloctane (PO). Individual mols. are visualized by STM, revealing that the alkyl chains protrude from the surface into the solution and suggesting that a self-assembled bilayer film structure is predominantly formed. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Recommanded Product: 2675-79-8)

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.Recommanded Product: 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

The author of 《Twelve 4-(4-methoxyphenyl)piperazin-1-ium salts containing organic anions: supramolecular assembly in one, two and three dimensions》 were Kiran Kumar, Haruvegowda; Yathirajan, Hemmige S.; Foro, Sabine; Glidewell, Christopher. And the article was published in Acta Crystallographica, Section E: Crystallographic Communications in 2019. SDS of cas: 586-76-5 The author mentioned the following in the article:

Twelve 4-(4-methoxyphenyl)piperazin-1-ium salts containing organic anions have been prepared and structurally characterized. The monohydrated benzoate, 4-fluorobenzoate, 4-chlorobenzoate and 4-bromobenzoate salts, C11H17N2O+·C7H5O2-·H2O (I), C11H17N2O+·C7H4FO2-·H2O (II), C11H17N2O+·C7H4ClO2-·H2O (III), and C11H17N2O+·C7H4BrO2-·H2O (IV), resp., are isomorphous and all exhibit disorder in the 4-methoxyphenyl unit: the components are linked by N-H···O and O-H···O hydrogen bond to form chains of rings. The unsolvated 2-hydroxybenzoate, pyridine-3-carboxylate and 2-hydroxy-3,5-dinitrobenzoate salts, C11H17N2O+·C7H5O3- (V), C11H17N2O+·C6H4NO2- (VI) and C11H17N2O+·C7H3N2O7- (VII), resp., are all fully ordered: the components of (V) are linked by multiple N-H···O hydrogen bonds to form a chain of rings; those of (VI) are linked into a three-dimensional framework by a combination of N-H···O, C-H···O and C-H···N hydrogen bonds and those of (VII), where the anion has a structure reminiscent of the picrate anion, are linked into a three-dimensional array by N-H···O and C-H···O hydrogen bonds. The hydrogensuccinate and hydrogenfumarate salts, C11H17N2O+·C4H5O4- (VIII) and C11H17N2O+·C4H3O3- (IX), resp., are isomorphous, and both exhibit disorder in the anionic component: N-H···O and O-H···O hydrogen bonds link the ions into sheets, which are further linked by C-H···π(arene) interactions. The anion of the hydrogenmaleate salt, C11H17N2O+·C4H3O3- (X), contains a very short and nearly sym. O···H···O hydrogen bond, and N-H···O hydrogen bonds link the anions into chains of rings. The ions in the trichloroacetate salt, C11H17N2O+·C2Cl3O2- (XI), are linked into simple chains by N-H···O hydrogen bonds. In the hydrated chloranilate salt, 2C11H17N2O+·C6Cl2O42-·2H2O (XII), which crystallizes as a non-merohedral twin, the anion lies across a center of inversion in space group P21/n, and a combination of N-H···O and O-H···O hydrogen bonds generates complex sheets. Comparisons are made with the structures of some related compounds In the experiment, the researchers used many compounds, for example, 4-Bromobenzoic acid(cas: 586-76-5SDS of cas: 586-76-5)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography. It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.SDS of cas: 586-76-5

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

《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

《Ferrocene-based hyperbranched polymers: a synthetic strategy for shape control and applications as electroactive materials and precursor-derived magnetic ceramics》 was written by Wei, Zhuoxun; Wang, Dong; Liu, Yurong; Guo, Xuyun; Zhu, Ye; Meng, Zhengong; Yu, Zhen-Qiang; Wong, Wai-Yeung. Reference of Tris(4-bromophenyl)amine 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 stable sandwich structure and the excellent redox activity of ferrocene make it a ubiquitous component in organometallic systems. The introduction of a ferrocenyl unit into a polymer skeleton provides a good avenue towards novel materials for various applications in redox batteries, enantioselective catalysis, optical and magnetic switches, etc. Herein, we report a strategic design and synthesis of new ferrocene-based hyperbranched polymers, and demonstrate promising methods for their morphol. control as spheres by direct coupling reactions and hollow polyhedra by a templating approach. Furthermore, task-specific applications targeted for their resp. architectures are investigated in lithium ion batteries (LIBs) and water treatment, resp. The spherical polymer used as an electroactive anode in LIBs has a high capacity of 755.2 mA h g-1, stable chargeable performance of over 200 cycles and superior rate capability. For comparison, the hollow counterpart shows a sharp increase of the sp. surface area in the precursor-derived magnetic ceramics from 417 to 1195 m2 g-1, and the as-made material exhibits great potential for the rapid removal of trace amounts of pollutants in water with magnetic reusability. In the part of experimental materials, we found many familiar compounds, such as 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