Category: 3141-27-3

《Photocontrolled Synthesis of n-Type Conjugated Polymers》 was written by Woods, Eliot F.; Berl, Alexandra J.; Kalow, Julia A.. Product Details of 3141-27-3 And the article was included in Angewandte Chemie, International Edition on 3 30 ,2020. The article conveys some information:

Current approaches to synthesize π-conjugated polymers (CPs) are dominated by thermally driven, transition-metal-mediated reactions. Herein we show that electron-deficient Grignard monomers readily polymerize under visible-light irradiation at room temperature in the absence of a catalyst. The product distribution can be tuned by the wavelength of irradiation based on the absorption of the polymer. Conversion studies are consistent with an uncontrolled chain-growth process; correspondingly, chain extension produces all-conjugated n-type block copolymers. Preliminary results demonstrate that the polymerization can be expanded to donor-acceptor alternating copolymers. We anticipate that this method can serve as a platform to access new architectures of n-type CPs without the need for transition-metal catalysis. In the experiment, the researchers used 2,5-Dibromothiophene(cas: 3141-27-3Product Details of 3141-27-3)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Product Details of 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Herrera-Luna, Jorge C.; Diaz, David Diaz; Jimenez, M. Consuelo; Perez-Ruiz, Raul published an article in 2021. The article was titled 《Highly Efficient Production of Heteroarene Phosphonates by Dichromatic Photoredox Catalysis》, and you may find the article in ACS Applied Materials & Interfaces.SDS of cas: 3141-27-3 The information in the text is summarized as follows:

A new strategy to achieve efficient aerobic phosphorylation of five-membered heteraroenes with excellent yields using dichromatic photoredox catalysis in a gel-based nanoreactor is described here. The procedure involves visible aerobic irradiation (cold white LEDs) of a mixture containing the heteroarene halide, trisubstituted phosphite, N,N-diisopropylethylamine (DIPEA) as sacrificial agent, and catalytic amounts of 9,10-dicyanoanthracene (DCA) in the presence of an adequate gelator, which permits a faster process than at the homogeneous phase. The methodol., which operates by a consecutive photoinduced electron transfer (ConPET) mechanism, was successfully applied to the straightforward and clean synthesis of a number of different heteroarene (furan, thiophene, selenophene, pyrrole, oxazole, or thioxazole) phosphonates, extending to the late-stage phosphonylation of the anticoagulant rivaroxaban. Strategically, employment of cold white light is critical since it provides both selective wavelengths for exciting 1st DCA (blue region) and subsequently its corresponding radical anion DCA•- (green region). The resultant strongly reducing excited agent DCA•-* is capable of even activate five-membered heteroarene halides (Br, Cl) with high reduction potentials (~-2.7 V) to effect the C(sp2)-P bond formation. Spectroscopic and thermodn. studies have supported the proposed reaction mechanism. The rate of product formation was clearly enhanced in gel media because reactants can be presumably localized not only in the solvent pools but also through to the fibers of the viscoelastic gel network. This was confirmed by field-emission SEM images where a marked densification of the network was observed, modifying its fibrillary morphol. Finally, rheol. measurements showed the resistance of the gel network to the incorporation of the reactants and the formation of the desired products. In the part of experimental materials, we found many familiar compounds, such as 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

Heinen, Flemming; Reinhard, Dominik L.; Engelage, Elric; Huber, Stefan M. published an article in 2021. The article was titled 《A bidentate iodine(III)-based halogen-bond donor as a powerful organocatalyst》, and you may find the article in Angewandte Chemie, International Edition.Recommanded Product: 2,5-Dibromothiophene The information in the text is summarized as follows:

In contrast to iodine(I)-based halogen bond donors, iodine(III)-derived ones have only been used as Lewis acidic organocatalysts in a handful of examples, and in all cases they acted in a monodentate fashion. Herein, we report the first application of a bidentate bis(iodolium) salt as organocatalyst in a Michael and a nitro-Michael addition reaction as well as in a Diels-Alder reaction that had not been activated by noncovalent organocatalysts before. In all cases, the performance of this bidentate XB donor distinctly surpassed the one of arguably the currently strongest iodine(I)-based organocatalyst. Bidentate coordination to the substrate was corroborated by a structural anal. and by DFT calculations of the transition states. Overall, the catalytic activity of the bis(iodolium) system approaches that of strong Lewis acids like BF3. In the experiment, the researchers used many compounds, for example, 2,5-Dibromothiophene(cas: 3141-27-3Recommanded Product: 2,5-Dibromothiophene)

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.Recommanded Product: 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Kreisel, Tatjana; Mendel, Marvin; Queen, Adele E.; Deckers, Kristina; Hupperich, Daniel; Riegger, Julian; Fricke, Christoph; Schoenebeck, Franziska published an article in Angewandte Chemie, International Edition. The title of the article was 《Modular Generation of (Iodinated) Polyarenes Using Triethylgermane as Orthogonal Masking Group》.Quality Control of 2,5-Dibromothiophene The author mentioned the following in the article:

Herein, a complementary modular coupling approach to the widely employed Suzuki coupling strategy of boron containing precursors, which relied on organogermane containing building blocks as key orthogonal functionality and an electrophilic (rather than nucleophilic) unmasking event paired with air-stable PdI dimer based bond construction was disclosed. This allowed to significantly shorten the reaction times for the iterative coupling steps and/or to close gaps in the accessible compound space, enabling straightforward access also to iodinated compounds In the experimental materials used by the author, we found 2,5-Dibromothiophene(cas: 3141-27-3Quality Control of 2,5-Dibromothiophene)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Quality Control of 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Hwang, Soon-Hyeok; Kang, Sung-Yun; Yang, Sanghee; Lee, Jaeho; Choi, Tae-Lim published an article in Journal of the American Chemical Society. The title of the article was 《Synchronous Preparation of Length-Controllable 1D Nanoparticles via Crystallization-Driven In Situ Nanoparticlization of Conjugated Polymers》.COA of Formula: C4H2Br2S The author mentioned the following in the article:

Precise size control of semiconducting nanomaterials from polymers is crucial for optoelectronic applications, but the low solubility of conjugated polymers makes this challenging. Herein, we prepared length-controlled semiconducting one-dimensional (1D) nanoparticles by synchronous self-assembly during polymerization First, we succeeded in unprecedented living polymerization of highly soluble conjugated poly(3,4-dihexylthiophene). Then, block copolymerization of poly(3,4-dihexylthiophene)-block-polythiophene spontaneously produced narrow-dispersed 1D nanoparticles with lengths from 15 to 282 nm according to the size of a crystalline polythiophene core. The key factors for high efficiency and length control are a highly solubilizing shell and slow polymerization of the core, thereby favoring nucleation elongation over isodesmic growth. Combining kinetics and high-resolution imaging analyses, we propose a unique mechanism called crystallization-driven in situ nanoparticlization of conjugated polymers (CD-INCP) where spontaneous nucleation creates seeds, followed by seeded growth in units of micelles. Also, we achieved “”living”” CD-INCP through a chain-extension experiment We further simplified CD-INCP by adding both monomers together in one-shot copolymerization but still producing length-controlled nanoparticles.2,5-Dibromothiophene(cas: 3141-27-3COA of Formula: C4H2Br2S) was used in this study.

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.COA of Formula: C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Mechanistic pathways for halogen dance reactions in bromo-thiophenes: a cascade-like pattern》 was published in Journal of Chemical Sciences (Berlin, Germany) in 2020. These research results belong to Sakhaee, Nader; Sakhaee, Sahar; Mobaraki, Akbar; Takallou, Ahmad; Sakhaee, Mohammad Hossein. Recommanded Product: 3141-27-3 The article mentions the following:

Ever since the halogen dance reaction was discovered by Bunnet et al, synthetic chemists have utilized the transformation in many desirable ways to build substituted heterocyclic target mols. of all kind. Using DFT-Cam-B3LYP/ land2dz computations and focused on Hannes Frohlich et al. Halogen dance (HD) reactions of bromothiophenes, a new bromo-bridged transition state (TS) is proposed. This bromo-bridged TS was then used to put forth eight possible isomerization as well as eight possible disproportionation paths. These mechanistic pathways were then carefully inspected based on TS’s energy and protonation/deprotonation steps to find the most suitable pathways. Collectively these mechanistic pathways joined like a jigsaw puzzle to give, for the first-time, a fully comprehensive cascade-like pattern for base-catalyzed halogen dance in its entirety. The present work may well shed light on a dynamic domino mechanism which dominates the realm of nonaqueous strongly basic medium, organic chem., reactions. After reading the article, we found that the author used 2,5-Dibromothiophene(cas: 3141-27-3Recommanded Product: 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Recommanded Product: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《High-performance Li-organic battery based on thiophene-containing porous organic polymers with different morphology and surface area as the anode materials》 was written by Xu, Ning; Mei, Shiwei; Chen, Zhangxin; Dong, Yujie; Li, Weijun; Zhang, Cheng. Application of 3141-27-3 And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2020. The article conveys some information:

It is the hot issue for Li-organic battery that whether the higher sp. surface area of the porous organic polymers as the electrode materials can benefit to the better battery performance. In this article, the conjugated polymer based on star-shaped benzene-thiophene structure (pBHT) and benzene-ethynyl-thiophene structure (pBAT and pBABT) were designed and successfully prepared The pBHT polymer exhibits the unique stacked hollow tube morphol. and possesses the high surface area (∼ 1139 m2/g), while the polymers pBAT and pBABT both display the macroporous morphol. with the low surface area (32.5 and 12.5 m2/g). Being explored for the battery performance as anode materials, the pBHT electrode exhibits a very low discharge capacity (< 100 mAh g-1) and poor cycle′s stability. In contrast, the pBABT electrode with very low surface area of only 12.5 m2/g displays the higher discharge capacity (442 mAh g-1 at 500 mA/g of the second cycle), excellent stability (401 mAh g-1 at 500 mA/g of the 1000 cycles) and higher rate capabilities. These uncommon electrochem. properties may be attributed to the unique hollow tube morphol. for the polymer pBHT, which limit the lithium ion released and might form ""dead lithium"", thus resulting in the collapse of polymer structures and difficult solid electrolyte interface formation, as well as the fast capacity fading and extremely low capacity according to the electrochem. behaviors and SEM measurements. EIS also confirm the uncommon electrochem. properties with the three polymer electrodes from the kinetics for charge carrier insertion/extraction the findings may offer a clue to explore the effect of sp. surface area and morphol. of polymer electrodes on the performance of LIBs when designing the high-performance electrode materials. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3Application of 3141-27-3) was used in this study.

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.Application of 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

COA of Formula: C4H2Br2SIn 2021 ,《Synthesis of thiophene-benzodithiophene wide bandgap polymer and GIWAXS evaluation of thermal annealing with potential for application in ternary polymer solar cells》 was published in Polymers for Advanced Technologies. The article was written by Rubio Arias, Jose Jonathan; Mota, Isabela Custodio; Vieira Marques, Maria De Fatima. The article contains the following contents:

Conjugated polymers are a special type of material responsible for light absorption in polymer solar cells. The absorption of these materials plays an important role in photon harvesting and energy conversion. Ternary organic solar cells are a type of OPV that combines two-electron donors with complementary absorption in a single layer. The present work deals with the synthesis and characterization of a high-bandgap polymer prepared through the alternation of two high-electron d. aromatic units (thiophene-benzodithiophene). This polymer presented high bandgap (2.1 eV) with potential for complementary absorption in a ternary device, as well as high Voc when applied in a single junction inverted OPV device in heterojunction with PC70BM (0.95 V), which agrees with the relatively large energy difference between its HOMO and the LUMO of PC70BM determined through CV and UV-vis. A dynamic GIWAXS study was performed and demonstrated that for this polymer, increasing annealing temperature to 80°C can increase its crystalline organization by up to 50%. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3COA of Formula: C4H2Br2S) was used in this study.

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .COA of Formula: C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Ling, Huan; Wu, Jianchang; Su, Fengyu; Tian, Yanqing; Yan, Jun Liu published an article in Chemical Engineering Journal (Amsterdam, Netherlands). The title of the article was 《High performance electrochromic supercapacitors powered by perovskite-solar-cell for real-time light energy flow control》.Computed Properties of C4H2Br2S The author mentioned the following in the article:

Electrochromic devices (ECDs) can alter their optical transmittances under external elec. power but are unable to spontaneously modulate the light flow in real-time along with the intensity change of surrounding light. To address this problem, a module of smart perovskite solar cell (PSC)-powered all-in-one gel ECDs was reported. The PSC-powered ECDs could modulate their transmittance swiftly in visible-IR regions, hence regulating the photo energy flow in real time according to the surrounding light intensity. The ECD based on 4, 4′-(thiophene- 2, 5-diyl)bis(1-ethylpyridin-1-ium) diiodide (TEV) showed large optical contrast (79.7% at 570 nm, 64.9% at 908 nm), excellent coloration efficiency (231.2 cm2/C), and outstanding stability (only 1.1% ΔT change after 60,000 cycles). The PSC-powered ECDs showed fast response time (≤5 s) and high stability (negligible degradation after 5000 s consecutive switching between bright and dark conditions in air). Meanwhile, the stored power accompanied with the electrochromic process could drive a red LED with high cyclic stability (95.6% of areal capacitance maintained after 10,000 charging-discharging cycles), indicating that ECDs can serve as ideal electrochromic supercapacitors (ECSs). In addition, the fabricated ECD with large area (5.0 cm x 5.4 cm) showed excellent thermal regulation (7°C of temperature difference between colored and bleached states). We expect this work would pave a new way to save energy and improve energy efficiency in modern buildings and automobiles. In the experiment, the researchers used 2,5-Dibromothiophene(cas: 3141-27-3Computed Properties of C4H2Br2S)

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.Computed Properties of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Single Wavelength Laser Excitation Ratiometric NIR-II Fluorescent Probe for Molecule Imaging in Vivo》 was written by Ge, Xiaoguang; Lou, Yuheng; Su, Lichao; Chen, Bin; Guo, Zhiyong; Gao, Shi; Zhang, Wenmin; Chen, Tao; Song, Jibin; Yang, Huanghao. Computed Properties of C4H2Br2S And the article was included in Analytical Chemistry (Washington, DC, United States) in 2020. The article conveys some information:

Fluorescence (FL) imaging in the second near-IR window (NIR-II, 1000-1700 nm) has emerged as a promising bioimaging modality that enables noninvasive visualization of deep tissue with an unprecedented resolution However, there is a paucity of studies on high-quality responsive NIR-II FL mols. Herein we report a novel activated NIR-II FL mol., 4,7-bis(5-(4-(diphenylamine)phenyl)-2-thiophene) [1,2,5]selenadiazolo[3,4-f]benzo[c][1,2,5]thiadiazole (SeTT), which exhibits fast and specific responsive capability to hypochlorous acid (HClO). To obtain the NIR-II ratiometric nanoprobe, SeTT was encapsulated on the surface of Er3+-doped down-conversion nanoparticles (DCNP), achieving the DCNP@SeTT nanoprobe. With a single 980 nm laser excitation, the ratiometric FL signal of SeTT at 1150 nm and DCNP at 1550 nm (I1150 nm/I1550 nm) was linearly correlated with the concentration of HClO with a detection limit of 0.4μM. The ratiometric nanoprobe was successfully investigated for variations in HClO concentration in the tumor progression, visualization of anatomical structures of the peritoneal cavity in the mice model with inflammation, and quant. detection of the HClO concentration in a rabbit model of osteoarthritis, achieving a fast response and high selectivity for the detection of HClO. The NIR-II-responsive nanoprobe can serve as a promising and effective tool for highly sensitive monitoring and imaging of HClO in living systems. In the part of experimental materials, we found many familiar compounds, such as 2,5-Dibromothiophene(cas: 3141-27-3Computed Properties of C4H2Br2S)

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.Computed Properties of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary