Category: 3141-27-3

Recommanded Product: 3141-27-3In 2022 ,《An all-C-H-activation strategy to rapidly synthesize high-mobility well-balanced ambipolar semiconducting polymers》 was published in Matter. The article was written by Shen, Tao; Li, Wenhao; Zhao, Yan; Liu, Yunqi; Wang, Yang. The article contains the following contents:

Ambipolar semiconducting polymers are of significant fundamental and tech. interest. However, the tedious syntheses of using classic C(sp2)-C(sp2) coupling reactions make high-performance ambipolar polymers seriously absent. In order to address this dilemma, we report here an all-C-H-activation strategy to efficiently synthesize high-performance ambipolar polymers. Diketopyrrolopyrrole-dimer-type monomers and their acceptor-acceptor-type polymers are used as examples. Remarkably, two-step C-H activation reactions from monomer syntheses to polymerization can be accomplished within 2 h, affording a series of semiconducting polymers applied in flexible organic transistors with high and ideally balanced hole and electron mobilities up to 3.56 and 3.75 cm2 V-1 s-1, resp. Furthermore, controlled mol. weight can be realized by varying the polymerization time, which is very important for regulating the trade-off between high mobility and suitable solution processability. Overall, this work offers a general strategy for the rapid synthesis of semiconducting polymers, potentially leading to wide applications of organic electronics. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3Recommanded Product: 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 polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Recommanded Product: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Safety of 2,5-DibromothiopheneIn 2021 ,《Upgrading of thiophenic compounds from fuels over a silver-modified MoO3 catalyst under ambient conditions》 was published in Fuel. The article was written by Miao, Guang; Chong, Peng; Yang, Cuiting; Liu, Zewei; Yu, Hao; Dong, Lei; Li, Guoqing; Xiao, Jing. The article contains the following contents:

The demand for heterocyclic sulfur compounds is increasingly in fine chem. industry, where the thiophenic sulfur impurities in fuels can be a potential recyclable feedstock. In this work, the catalytic upgrading of thiophenic sulfur compounds over a silver-modified MoO3 catalyst under ambient conditions was reported. Br2 and H2O2/HBr were used to convert thiophenic compounds in alkane and alc. solutions The conversion of various thiophenic compounds (thiophene, benzothiophene and dibenzothiophene) to the corresponding bromides reached up to 81.6 ∼ 99.8%. The bromination path undergoes electrophilic substitution mechanism, and the transformation of mono- to dibromides is identified as the rate-determining step. The introduction of MoAg2O4 phase on MoO3 is rationalized to boost the conversion of mono-bromothiophene, which results in the selectivity of 2,5-dibromothiophene increased from 10% to over 50%. The optimized silver loading was 10% due to its high thiophene conversion and selectivity of dibromides. Silver modification of MoO3 rods not only stabilized the textural property of catalysts but also improved its bromination activity compared to the bulk MoO3 indicated by SEM and FTIR characterization. D. functional theory (DFT) calculation suggested that the formation of 2-bromothiphene and 2,5-dibromothiophene were preferred on the MoO3(111) and MoAg2O4(111) sites, resp. The catalytic upgrading approach paves the way for the efficient utilization of thiophenic sulfur impurities in fuels to their value-added under mild conditions. In the experiment, the researchers used many compounds, for example, 2,5-Dibromothiophene(cas: 3141-27-3Safety 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) .Safety of 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Wang, Weijie; An, Ruiqi; Wang, Tong; Li, Hongxiang; Zhang, Jidong; Tian, Hongkun; Wu, Xiaofu; Tong, Hui; Wang, Lixiang published an article in Giant. The title of the article was 《Nitrogen-bridged star-shaped fused-ring electron acceptors for organic solar cells》.Synthetic Route of C4H2Br2S The author mentioned the following in the article:

Two kinds of nitrogen-bridged star-shaped fused-ring electron acceptors based on benzo[1,2-b:3,4-b′-5,6-b””]tri(4-H-dithieno[3,2-b:2′,3′-d]pyrrole) (BTDTP) core with linear and branched alkyl side chains on bridging nitrogen atoms are developed. Both electron acceptors exhibit strong intramol. charge transfer absorption bands at 500-800 nm (molar extinction coefficient of 3.0 x 105 M-1 cm-1) with narrow optical bandgaps around 1.58 eV, but reveal different mol. packing and morphol. Compared to acceptor with linear side chains, the acceptor bearing branched side chains exhibits ordered face-on orientation with tight π-π stacking, as well as more favorable phase separation morphol. and balanced charge transport when blended with polymer donor PM6. Organic solar cell device based on acceptors bearing branched side chains achieves a power conversion efficiency (PCE) of 9.95% with a fill factor of 74.98% and a short-circuit c.d. of 14.90 mA cm-2, which is much superior to the device using acceptors bearing linear side chains (a PCE of 6.74%). The experimental process involved the reaction of 2,5-Dibromothiophene(cas: 3141-27-3Synthetic Route 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.Synthetic Route of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

SDS of cas: 3141-27-3In 2021 ,《Electrochromic properties of pyrene conductive polymers modified by chemical polymerization》 appeared in RSC Advances. The author of the article were Li, Rui; Xu, Haoran; Zhang, Yuhang; Chang, Lijing; Ma, Yang; Hou, Yanjun; Miao, Shoulei; Wang, Cheng. The article conveys some information:

Pyrene is composed of four benzene rings and has a unique planar melting ring structure. Pyrene is the smallest condensed polycyclic aromatic hydrocarbon, and its unique structural properties have been extensively studied. Pyrene has excellent properties such as thermal stability, high fluorescence quantum efficiency and high carrier mobility. This paper mainly used thiophene, EDOT and triphenylamine groups to enhance the pyrene based π-conjugated system and control the mol. accumulation of organic semiconductors, and improve their charge transport performances. Five kinds of polymer were synthesized and correspondingly characterized. The five kinds of pyrene conductive polymer had outstanding properties in terms of solubility, fluorescence intensity and thermal stability, good film-forming properties, stable electrochromic properties and high coloring efficiency. The coloration efficiency (CE) of PPYTP was as high as 277 cm2 C-1, and the switching response time was short. The coloring time of PPYEDOT was 1.3 s and the bleaching time was 3.2 s. The lower impedance will also provide the possibility of such polymers being incorporated into electrochromic devices in the future. In short, the synthesized new pyrene conductive polymers will have wide application prospects in the field of electrochromic materials. After reading the article, we found that the author used 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 polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .SDS of cas: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Trapping of Transient Thienyllithiums Generated by Deprotonation of 2,3- or 2,5-Dibromothiophene in a Flow Microreactor》 was published in Synlett in 2020. These research results belong to Okano, Kentaro; Yamane, Yoshiki; Nagaki, Aiichiro; Mori, Atsunori. Formula: C4H2Br2S The article mentions the following:

Selective trapping of (4,5-dibromo-2-thienyl)lithium, known to undergo halogen dance, was achieved in a flow microreactor. This transient thienyllithium, generated by mixing 2,3-dibromothiophene and lithium diisopropylamide at -78°C for 1.6 s, reacted with benzaldehyde. The reaction system is also applicable to other carbonyl compounds to afford the corresponding adducts in good yields. Moreover, the established conditions permit the conversion of 2,5-dibromothiophene into a mixture of the two constitutional isomers. The contrasting results are discussed on the basis of the reaction pathway. In the experiment, the researchers used 2,5-Dibromothiophene(cas: 3141-27-3Formula: C4H2Br2S)

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.Formula: C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Simultaneously boosting the conjugation, brightness and solubility of organic fluorophores by using AIEgens》 was written by Qi, Ji; Duan, Xingchen; Cai, Yuanjing; Jia, Shaorui; Chen, Chao; Zhao, Zheng; Li, Ying; Peng, Hui-Qing; Kwok, Ryan T. K.; Lam, Jacky W. Y.; Ding, Dan; Tang, Ben Zhong. Recommanded Product: 2,5-Dibromothiophene And the article was included in Chemical Science in 2020. The article conveys some information:

Organic near-IR (NIR) emitters hold great promise for biomedical applications. Yet, most organic NIR fluorophores face the limitations of short emission wavelengths, low brightness, unsatisfactory processability, and the aggregation-caused quenching effect. Therefore, development of effective mol. design strategies to improve these important properties at the same time is a highly pursued topic, but very challenging. Herein, aggregation-induced emission luminogens (AIEgens) are employed as substituents to simultaneously extend the conjugation length, boost the fluorescence quantum yield, and increase the solubility of organic NIR fluorophores, being favorable for biol. applications. A series of donor-acceptor type compounds with different substituent groups (i.e., hydrogen, Ph, and tetraphenylethene (TPE)) are synthesized and investigated. Compared to the other two analogs, MTPE-TP3 with TPE substituents exhibits the reddest fluorescence, highest brightness, and best solubility Both the conjugated structure and twisted conformation of TPE groups endow the resulting compounds with improved fluorescence properties and processability for biomedical applications. The in vitro and in vivo applications reveal that the NIR nanoparticles function as a potent probe for tumor imaging. This study would provide new insights into the development of efficient building blocks for improving the performance of organic NIR emitters. After reading the article, we found that the author used 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,Batool, Razia; Riaz, Noreen; Junaid, Hafiz Muhammad; Waseem, Muhammad Tahir; Khan, Zulfiqar Ali; Nawazish, Shamyla; Farooq, Umar; Yu, Cong; Shahzad, Sohail Anjum published an article in ACS Omega. The title of the article was 《Fluorene-Based Fluorometric and Colorimetric Conjugated Polymers for Sensitive Detection of 2,4,6-Trinitrophenol Explosive in Aqueous Medium》.Recommanded Product: 3141-27-3 The author mentioned the following in the article:

Nitroarom. explosives are a class of compounds that are responsible for various health hazards and terrorist outrages. Among these, sensitive detection of 2,4,6-trinitrophenol (TNP) explosive has always been highly desirable considering public health and national security. In this regard, three fluorene-based conjugated polymers (CP 1, CP 2, and CP 3) were synthesized through the Suzuki-Miyaura coupling reaction and were found to be highly sensitive for fluorescence detection of TNP with detection limits of 3.2, 5.7, and 6.1 pM, resp. Excellent selectivity of CPs toward TNP was attributed to their unique π-π interactions based on fluorescence studies and d. functional theory (DFT) calculations The high sensitivity of CPs to TNP was attributed to the static quenching mechanism based on the photoinduced electron transfer process and was evaluated by fluorescence, UV-visible absorption, dynamic light scattering, Job′s plots, the Benesi-Hildebrand plots, and DFT calculations CPs were also used for colorimetric and real-water sample anal. for the detection of TNP explosive. Meanwhile, sensor-coated test strips were fabricated for on-site detection of TNP, which makes them convenient solid-supported sensors. In the part of experimental materials, we found many familiar compounds, such as 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 as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.Recommanded Product: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《A Highly Stable and Tunable Visible-Near-IR Electrochromic All-in-One Gel Device》 was written by Ling, Huan; Su, Fengyu; Tian, Yanqing; Luo, Dan; Liu, Yan Jun; Sun, Xiao Wei. Category: bromides-buliding-blocks And the article was included in ChemPhotoChem in 2020. The article conveys some information:

Energy saving is a global topic of critical importance. Electrochromic devices (ECDs) could be used to control energy flow by modulating the light absorption reversibly upon application of a small potential bias. Herein, a visible-NIR dual-band ECD based on the viologen analog 4, 4′-(thiophene-2, 5-diyl) bis(1-methylpyridin-1-ium) diiodide (TMP) was assembled with a simple all-in-one configuration. The TMP-based gel ECD possesses high dynamic contrast (81.7 % at 570 nm, 68.6 % at 835 nm, 62.8 % at 910 nm and 55.3 % at 1046 nm), excellent cyclic stability (70.6 % of ΔT at 570 nm maintained after 25000 cycles at 1.4 V), and low power consumption (15.2 mJ/cm2 to complete the coloring process, 2.5 mW/cm2 to keep color and low transmittance). Remarkably, the absorption of visible and NIR light could be selectively adjusted by varying the coloring time. For comparison, a di-Me viologen (DMV)-based gel ECD was fabricated, and the SAR (structure-activity relationship) was established by cyclic voltammetry, d. functional theory (DFT) calculations, and other electrochromic performance parameters. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3Category: bromides-buliding-blocks) 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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 2,5-DibromothiopheneIn 2020 ,《star-shaped thienoviologens for electrochromism and detection of picric acid in aqueous medium》 was published in Dyes and Pigments. The article was written by Yan, Ni; Zhang, Sikun; Li, Guoping; Rao, Bin; Wei, Junji; Wei, Zengsu; Xu, Liang; He, Gang. The article contains the following contents:

Two star-shaped thienoviologens with good redox and emission properties are reported. The results indicate that the increasing number of thiophene rings can strongly weaken the electron-accepting ability and make its first reduction wave shifted to more neg. position, accompanying the decrease of the fluorescence quantum yield. The star-shaped thienoviologens were used as electroactive materials to fabricate electrochromic devices, which showed three-color changes modulated by the different voltages. The star-shaped thienoviologens were used to detect the picric acid (PA) in aqueous medium with good sensitivity and selectivity (Ksv,5a = 1.94 x 105 L/mol; Ksv,5b = 5.38 x 104 L/mol) due to their special mol. architecture and cathodic conjugated scaffold. 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

《Synthesis and biological evaluation of new curcumin analogs inhibiting osteoclastogenesis》 was published in Heterocycles in 2020. These research results belong to Sugawara, Aoi; Ohashi, Toshika; Ogawa, Satoshi; Matsumoto, Naomi; Nakanishi-Matsui, Mayumi; Tamura, Satoru; Kawano, Tomikazu. Safety of 2,5-Dibromothiophene The article mentions the following:

A series of curcumin analogs (1-3) were newly designed and synthesized for the development of therapeutic agents for osteoporosis. Among the synthesized compounds, 2,5-substituted conjugated thiophene derivative (1a) and the corresponding pyrazine derivative (1c) were shown to be potential leads for the development of anti-osteoclastogenesis agent.2,5-Dibromothiophene(cas: 3141-27-3Safety of 2,5-Dibromothiophene) 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Safety of 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary