Category: 623-24-5

《XCage: A Tricyclic Octacationic Receptor for Perylene Diimide with Picomolar Affinity in Water》 was written by Liu, Wenqi; Bobbala, Sharan; Stern, Charlotte L.; Hornick, Jessica E.; Liu, Yugang; Enciso, Alan E.; Scott, Evan A.; Stoddart, J. Fraser. Product Details of 623-24-5This research focused onXCage tricyclic octacationic receptor perylene diimide fluorescence. The article conveys some information:

The rational design of wholly synthetic receptors that bind active substrates with ultrahigh affinities is a challenging goal, especially in water. Here, we report the synthesis of a tricyclic octacationic cyclophane, which exhibits complementary stereoelectronic binding toward a widely used fluorescent dye, perylene diimide, with picomolar affinity in water. The ultrahigh binding affinity is sustained by a large and rigid hydrophobic binding surface, which provides a highly favorable enthalpy and a slightly pos. entropy of complexation. The receptor-substrate complex shows significant improvement in optical properties, including red-shifted absorption and emission, turn-on fluorescence, and efficient energy transfer. An unusual single-excitation, dual-emission, imaging study of living cells was performed by taking advantage of a large pseudo-Stokes shift, produced by the efficient energy transfer. In the experiment, the researchers used many compounds, for example, 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Product Details of 623-24-5)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Product Details of 623-24-5 Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Mechanical-Bond-Induced Exciplex Fluorescence in an Anthracene-Based Homo[2]catenane》 was written by Garci, Amine; Beldjoudi, Yassine; Kodaimati, Mohamad S.; Hornick, Jessica E.; Nguyen, Minh T.; Cetin, M. Mustafa; Stern, Charlotte L.; Roy, Indranil; Weiss, Emily A.; Stoddart, J. Fraser. Electric Literature of C8H8Br2 And the article was included in Journal of the American Chemical Society in 2020. The article conveys some information:

Collisional intermol. interactions between excited states form short-lived dimers and complexes that lead to the emergence of excimer/exciplex emission of lower energy, a phenomenon which must be differentiated from the photoluminescence (PL) arising from the monomeric mols. Although the utilization of noncovalent bonding interactions, leading to the generation of excimer/exciplex PL, was studied extensively, precise control of the aggregates and their persistence at low concentrations remains a rare phenomenon. In the search for a fresh approach, we sought to obtain exciplex PL from permanent structures by incorporating anthracene moieties into pyridinium-containing mech. interlocked mols. (MIMs). Beyond the optical properties of the anthracene moieties, their π-extended nature enforces [π···π] stacking that can overcome the Coulombic repulsion between the pyridinium units, affording an efficient synthesis of an octacationic homo[2]catenane. Notably, upon increasing the ionic strength by adding tetrabutylammonium hexafluorophosphate, the catenane yield increases significantly as a result of the decrease in Coulombic repulsions between the pyridinium units. Although the ground state photophys. properties of the free cyclophane and the catenane are similar and show a charge transfer band at ∼455 nm, their PL characters are distinct, denoting different excited states. The cyclophane emits at ∼562 nm (quantum yield (ΦF) = 3.6%, emission lifetime Γs = 3 ns in MeCN), which characteristic of a disubstituted anthracene-pyridinium linker. By contrast, the catenane displays an exciplex PL at low concentration (10-8 M) with an emission band centered on 650 nm (ΦF = 0.5%, Γs = 14 ns) in MeCN and at 675 nm in aqueous solution Live-cell imaging performed in MIAPaCa-2 prostate cancer cells confirmed that the catenane exciplex emission can be detected at micromolar concentrations1,4-Bis(bromomethyl)benzene(cas: 623-24-5Electric Literature of C8H8Br2) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Electric Literature of C8H8Br2 Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Reference of 1,4-Bis(bromomethyl)benzeneIn 2020 ,《Precisely Controlled Multidimensional Covalent Frameworks: Polymerization of Supramolecular Colloids》 was published in Angewandte Chemie, International Edition. The article was written by Li, Yongguang; Wu, Shanshan; Zhang, Lingling; Xu, Xin; Fang, Yajun; Yi, Juzhen; Kim, Jehan; Shen, Bowen; Lee, Myongsoo; Huang, Liping; Zhang, Liwei; Bao, Junhui; Ji, Hongbing; Huang, Zhegang. The article contains the following contents:

Rapid and selective removal of micropollutants from water is important for the reuse of water resources. Despite hollow frameworks with specific functionalized porous walls for the selective adsorption based on a series of interactions, tailoring a stable shape of nanometer- and micrometer-sized architectures for the removal of specific pollutants remains a challenge. Here, exactly controlled sheets, tubes, and spherical frameworks were presented from the crosslinking of supramol. colloids in polar solvents. The frameworks strongly depended on the architecture of original supramol. colloids. As the entropy of colloids increased, the initial laminar framework rolled up into hollow tubules, and then further curled into hollow spheres. These shape-persistent frameworks showed unprecedented selectivity as well as specific recognition for the shape of pollutants, thus contributing to efficient pollutant separation In the experiment, the researchers used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Reference of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Reference of 1,4-Bis(bromomethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Acid-selective mass spectrometric analysis of petroleum fractions》 were Omari, Isaac; Zhu, Haoxuan; McGarvey, G. Bryce; McIndoe, J. Scott. And the article was published in International Journal of Mass Spectrometry in 2019. Electric Literature of C8H8Br2 The author mentioned the following in the article:

Naphthenic acids are cycloaliphatic carboxylic acids that are naturally-occurring constituents of petroleum. Anal. mass spectrometric methods aimed at carboxylic acids tend to involve deprotonation to generate carboxylate anions, but also produce detectable ions of every acidic component of the mixture A charged tag carbodiimide is able to facilitate detection of model naphthenic acids as well as low levels of naphthenic acids in petroleum fractions via tandem electrospray ionization mass spectrometry. This approach exhibits greater selectivity than deprotonation, and a picture of the acidic components of a petroleum fraction emerges after a quick derivatization step and without the use of chromatog. separation The method may prove useful in the context of characterizing the naphthenic acid components of complicated matrixes. In the experiment, the researchers used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Electric Literature of C8H8Br2)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Electric Literature of C8H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 1,4-Bis(bromomethyl)benzeneIn 2020 ,《Host-Guest Recognition and Fluorescence of a Tetraphenylethene-Based Octacationic Cage》 was published in Angewandte Chemie, International Edition. The article was written by Duan, Honghong; Li, Yawen; Li, Qingfang; Wang, Pinpin; Liu, Xueru; Cheng, Lin; Yu, Yang; Cao, Liping. The article contains the following contents:

We report the synthesis and characterization of a three-dimensional tetraphenylethene-based octacationic cage that shows host-guest recognition of polycyclic aromatic hydrocarbons (e.g. coronene) in organic media and water-soluble dyes (e.g. sulforhodamine 101) in aqueous media through CH···π, π-π, and/or electrostatic interactions. The cage⊃coronene exhibits a cuboid internal cavity with a size of approx. 17.2×11.0x6.96 Å3 and a “”hamburger””-type host-guest complex, which is hierarchically stacked into 1D nanotubes and a 3D supramol. framework. The free cage possesses a similar cavity in the crystalline state. Furthermore, a host-guest complex formed between the octacationic cage and sulforhodamine 101 had a higher absolute quantum yield (φF=28.5%), larger excitation-emission gap (Δλex-em=211 nm), and longer emission lifetime (τ=7.0 ns) as compared to the guest (φF=10.5%; Δλex-em=11 nm; τ=4.9 ns), and purer emission (ΔλFWHM=38 nm) as compared to the host (ΔλFWHM=111 nm). In the experiment, the researchers used many compounds, for example, 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Quality Control of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Quality Control of 1,4-Bis(bromomethyl)benzene Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 1,4-Bis(bromomethyl)benzeneIn 2021 ,《Highly Proton Conductive Phosphoric Acid Porous Organic Polymers via Knitting Method》 appeared in Industrial & Engineering Chemistry Research. The author of the article were Zhu, Tianhao; Shi, Benbing; Wu, Hong; You, Xinda; Wang, Xiaoyao; Fan, Chunyang; Peng, Quan; Jiang, Zhongyi. The article conveys some information:

Phosphoric acid group, which possesses a low energy barrier for proton conduction and high water bonding energy, favors proton conduction and water retention. In this study, a phosphoric acid porous organic polymer (PAPOP) with high proton conductivity was synthesized. The di-Et benzylphosphonate (DBP) monomer and the benzyl monomer were directly knitted via the Friedel-Crafts alkylation reaction to form a porous scaffold. The phosphate ester group on DBP not only enhanced the monomer reactivity but also realized the in situ introduction of the phosphoric acid group precursor during the formation of the porous scaffold. It is found that p-dichloroxylene (DCX) monomer, due to its higher electrophilic activity, is easier to react with DBP and thus easier to introduce phosphoric acid groups. The higher ratio of DCX leads to a more continuous hydrogen-bond network within the scaffold, which facilitates the proton-conducting process. The resultant porous organic polymers exhibited high hydrophilicity and excellent stability in strong acid as well as antiswelling ability in water. The highest ion-exchange capacity reached 2.68 mmol g-1, much higher than that of most reported polymers. The proton conductivity of powders reached the highest value of 7.09 × 10-2 S cm-1 at 348 K and 98% relative humidity. In addition to this study using 1,4-Bis(bromomethyl)benzene, there are many other studies that have used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Recommanded Product: 1,4-Bis(bromomethyl)benzene) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Due to the reactivity of bromide, they are used as potential precursors or important intermediates in organic synthesis. Recommanded Product: 1,4-Bis(bromomethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of C8H8Br2In 2022 ,《A Ribonucleotide ↔ Phosphoramidate Reaction Network Optimized by Computer-Aided Design》 was published in Journal of the American Chemical Society. The article was written by Englert, Andreas; Vogel, Julian F.; Bergner, Tim; Loske, Jessica; von Delius, Max. The article contains the following contents:

A growing number of out-of-equilibrium systems have been created and investigated in chem. laboratories over the past decade. One way to achieve this is to create a reaction cycle, in which the forward reaction is driven by a chem. fuel and the backward reaction follows a different pathway. Such dissipative reaction networks are still relatively rare, however, and most non-enzymic examples are based on the carbodiimide-driven generation of carboxylic acid anhydrides. In this work, we describe a dissipative reaction network that comprises the chem. fueled formation of phosphoramidates from natural ribonucleotides (e.g., GMP or AMP) and phosphoramidate hydrolysis as a mild backward reaction. Because the individual reactions are subject to a multitude of interconnected parameters, the software-assisted tool “”Design of Experiments”” (DoE) was a great asset for optimizing and understanding the network. One notable insight was the stark effect of the nucleophilic catalyst 1-ethylimidazole (EtIm) on the hydrolysis rate, which is reminiscent of the action of the histidine group in phosphoramidase enzymes (e.g., HINT1). We were also able to use the reaction cycle to generate transient self-assemblies, which were characterized by dynamic light scattering (DLS), confocal microscopy (CLSM), and cryogenic transmission electron microscopy (cryo-TEM). Because these compartments are based on prebiotically plausible building blocks, our findings may have relevance for origin-of-life scenarios.1,4-Bis(bromomethyl)benzene(cas: 623-24-5Electric Literature of C8H8Br2) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Electric Literature of C8H8Br2 The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Journal of the American Chemical Society included an article by Barrio, Jesus del; Liu, Ji; Brady, Ryan A.; Tan, Cindy S. Y.; Chiodini, Stefano; Ricci, Maria; Fernandez-Leiro, Rafael; Tsai, Ching-Ju; Vasileiadi, Panagiota; Di Michele, Lorenzo; Lairez, Didier; Toprakcioglu, Chris; Scherman, Oren A.. HPLC of Formula: 623-24-5. The article was titled 《Emerging Two-Dimensional Crystallization of Cucurbit[8]uril Complexes: From Supramolecular Polymers to Nanofibers》. The information in the text is summarized as follows:

The binding of imidazolium salts to cucurbit[8]uril, CB[8], triggers a stepwise self-assembly process with semiflexible polymer chains and crystalline nanostructures as early- and late-stage species, resp. In such a process, which involves the crystallization of the host-guest complexes, the guest plays a critical role in directing self-assembly toward desirable morphologies. These include platelet-like aggregates and two-dimensional (2D) fibers, which, moreover, exhibit viscoelastic and lyotropic properties. Our observations provide a deeper understanding of the self-assembly of CB[8] complexes, with fundamental implications in the design of functional 2D systems and crystalline materials.1,4-Bis(bromomethyl)benzene(cas: 623-24-5HPLC of Formula: 623-24-5) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.HPLC of Formula: 623-24-5 Organobromine compounds have fallen under increased scrutiny for their environmental impact.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

HPLC of Formula: 623-24-5In 2022 ,《Rationally designed Ru(II) metallacycles with tunable imidazole ligands for synergistical chemo-phototherapy of cancer》 appeared in Chemical Communications (Cambridge, United Kingdom). The author of the article were Tu, Le; Li, Chonglu; Liu, Chang; Bai, Suya; Yang, Jingfang; Zhang, Xian; Xu, Liying; Xiong, Xiaoxing; Sun, Yao. The article conveys some information:

Herein, we construct a series of Ru(II) metallacycles with multimodal chemo-phototherapeutic properties, which exhibited much higher anticancer activity and better cancer-cell selectivity than cisplatin. The antitumor mechanism could be ascribed to the activation of caspase 3/7 and the resulting apoptosis. These results open new possibilities for Ru(II) metallacycles in biomedicine. The experimental process involved the reaction of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5HPLC of Formula: 623-24-5)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.HPLC of Formula: 623-24-5 The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Synthesis and ring-opening metathesis polymerization of a new norbornene dicarboximide with a pendant carbazole moiety》 were Pragliola, Stefania; Botta, Antonio; Troiano, Rubina; Paradiso, Veronica; Grisi, Fabia. And the article was published in International Journal of Polymer Science in 2019. Recommanded Product: 623-24-5 The author mentioned the following in the article:

A new norbornene dicarboximide presenting a pendant carbazole moiety linked by a p-methylene benzyl spacer is synthesized. This carbazole-functionalized monomer is polymerized via ring-opening metathesis polymerization using Grubbs third-generation catalyst. Microstructural anal. of resulting polymers performed by NMR shows that they are stereoirregular. Wide-angle X-ray diffraction (WAXD) and thermal (DSC) anal. indicate that polymers are also amorphous. With respect to the fluorescence anal., both solution and film polymer samples exhibit only “”normal structured”” carbazole fluorescence, while excimer formation by overlap of carbazole groups is not detected. In the experiment, the researchers used many compounds, for example, 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Recommanded Product: 623-24-5)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products. Recommanded Product: 623-24-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary