Imae, Ichiro’s team published research in Polymer Bulletin (Heidelberg, Germany) in 2021 | 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.Name: 2,5-Dibromothiophene

Imae, Ichiro; Tada, Naofumi; Harima, Yutaka published an article in 2021. The article was titled 《Tuning of electronic properties of novel donor-acceptor polymers containing oligothiophenes with electron-withdrawing ester groups》, and you may find the article in Polymer Bulletin (Heidelberg, Germany).Name: 2,5-Dibromothiophene The information in the text is summarized as follows:

To investigate the substituent effects introduced into oligothiophene units, a series of novel donor-acceptor conjugated polymers containing ester-substituted oligothiophenes were synthesized by the direct C-H arylation polycondensation of bis(ester-substituted thienyl)benzothiadiazole and dibromo-substituted oligothiophenes. The UV-visible absorption spectra of three polymers showed two absorption bands in the visible light wavelength region, ascribed to π-π* transition and the intramol. charge transfer bands. The oxidation potentials of the polymers exhibited a neg. shift with an increase in the chain length of the oligothiophene units. By comparing these polymers with alkyl-substituted analogs, it was found that the introduction of electron-withdrawing ester groups induced a neg. shift in the HOMO (HOMO) and the LUMO (LUMO) energy levels and affected the LUMO rather than the HOMO energy levels. As a preliminary experiment, organic photovoltaic cells using these polymers were prepared, and their photoelec. conversion characteristics were investigated in relation to their chem. structures. In the part of experimental materials, we found many familiar compounds, such as 2,5-Dibromothiophene(cas: 3141-27-3Name: 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.Name: 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hu, Yongpan’s team published research in Angewandte Chemie, International Edition in 2020 | 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.HPLC of Formula: 3141-27-3

《Metal-Free Photocatalytic Hydrogenation Using Covalent Triazine Polymers》 was written by Hu, Yongpan; Huang, Wei; Wang, Hongshuai; He, Qing; Zhou, Yuan; Yang, Ping; Li, Youyong; Li, Yanguang. HPLC of Formula: 3141-27-3 And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:

Photocatalytic hydrogenation of biomass-derived organic mols. transforms solar energy into high-energy-d. chem. bonds. Reported herein is the preparation of a thiophene-containing covalent triazine polymer as a photocatalyst, with unique donor-acceptor units, for the metal-free photocatalytic hydrogenation of unsaturated organic mols. Under visible-light illumination, the polymeric photocatalyst enables the transformation of maleic acid into succinic acid with a production rate of about 2 mmol g-1 h-1, and furfural into furfuryl alc. with a production rate of about 0.5 mmol g-1 h-1. Great catalyst stability and recyclability are also measured. Given the structural diversity of polymeric photocatalysts and their readily tunable optical and electronic properties, metal-free photocatalytic hydrogenation represents a highly promising approach for solar energy conversion. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3HPLC of Formula: 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.HPLC of Formula: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rothe, Christian’s team published research in Physical Chemistry Chemical Physics in 2020 | 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) .Computed Properties of C4H2Br2S

Computed Properties of C4H2Br2SIn 2020 ,《Push-pull thiophene chromophores for electro-optic applications: from 1D linear to β-branched structures》 appeared in Physical Chemistry Chemical Physics. The author of the article were Rothe, Christian; Neusser, David; Hoppe, Niklas; Dirnberger, Klaus; Vogel, Wolfgang; Gamez-Valenzuela, Sergio; Lopez Navarrete, Juan T.; Villacampa, Belen; Berroth, Manfred; Ruiz Delgado, M. Carmen; Ludwigs, Sabine. The article conveys some information:

The authors report the synthesis and characterization of push-pull chromophores bearing one-dimensional (1D) linear and β-branched thiophenes as π-conjugated spacers between a 2,2,4,7-tetramethyl-1,2,3,4-tetrahydroquinoline electron donor unit and dicyano- and tricyanovinylene electron acceptor groups. The effect of the introduction of β-thiophenes on the linear and nonlinear optical (NLO) properties as well as electrochem. and thermal data is studied in detail by performing a comparative study between the branched and 1D linear systems. A parallel DFT computational study is used to evaluate structure-property relations. The NLO behavior of the mols. both in solution and in solid state as electrooptic (EO) films using a guest-host approach shows very promising performance for electrooptic applications with high mol. 1st hyperpolarizabilities (μβ) of 4840 × 10-48 esu and electrooptic coefficients r33 reaching 650 pm V-1. One highlight is that the EO films of the β-branched chromophores are superior in terms of thermal stability in device operation as measured by a transmissive modified reflective Teng-Man method. This work provides guidelines for the design of improved electrooptic materials including β-branched chromophores which could be useful for practical EO applications, where both enhanced β and r33 values together with chem. and thermal stability are necessary. After reading the article, we found that the author 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 polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Computed Properties of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Taheri, Poroshat’s team published research in Macromolecular Chemistry and Physics in 2020 | 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) .Name: 2,5-Dibromothiophene

Name: 2,5-DibromothiopheneIn 2020 ,《Novel Sulfur-Containing Cross-Linking Agent for Si-Based Preceramic Polymers》 was published in Macromolecular Chemistry and Physics. The article was written by Taheri, Poroshat; Bokka, Apparao; Asgari, Parham; Jeon, Junha; Lang, John C.; Campostrini, Renzo; Soraru, Gian Domenico; Kroll, Peter. The article contains the following contents:

Crosslinking polymethylhydrosiloxane (PMHS) with divinylthiophene (DVT) via hydrosilylation in highly dilute conditions and subsequent supercritical drying in CO2 yield a polymeric aerogel containing aromatic sulfur integrally and uniformly distributed throughout the monolith. Fourier-transform IR (FT-IR) spectroscopy indicates almost complete consumption of vinyl groups and Si-H bonds in the product. Both FT-IR and Raman spectroscopic analyses support loss of conjugation of vinyl groups with the retained double bonds of the thiophene ring. SEM indicates a condensed colloidal structure with characteristic particulate diameters of about 165 nm. SEM coupled with energy dispersive X-ray spectroscopy elemental mapping shows that sulfur is distributed homogeneously in the polymeric aerogel. Porosimetry of the mesoporous aerogel indicates the effective average pore diameters are about 12 nm. Thermogravimetric anal. (TGA) establishes greater thermal stability of the PMHS-DVT product than either of the pure unreacted components. TGA coupled with mass spectrometric (TG-MS) identification of the volatiles released during pyrolysis shows that sulfur is driven from the crosslinked polymer as thiophene and its derivatives Recorded mass spectra support the hypothesis that crosslinking DVT bridges between PMHS chains in the polymeric aerogel, and that this results in a more thermally stable monolith. The experimental part of the paper was very detailed, including the reaction process of 2,5-Dibromothiophene(cas: 3141-27-3Name: 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) .Name: 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Butscher, Julian F.’s team published research in ACS Applied Materials & Interfaces in 2020 | 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.Reference of 2,5-Dibromothiophene

《Enhancing the Open-Circuit Voltage of Perovskite Solar Cells by Embedding Molecular Dipoles within Their Hole-Blocking Layer》 was written by Butscher, Julian F.; Intorp, Sebastian; Kress, Joshua; An, Qingzhi; Hofstetter, Yvonne J.; Hippchen, Nikolai; Paulus, Fabian; Bunz, Uwe H. F.; Tessler, Nir; Vaynzof, Yana. Reference of 2,5-Dibromothiophene And the article was included in ACS Applied Materials & Interfaces in 2020. The article conveys some information:

Engineering the energetics of perovskite photovoltaic devices through deliberate introduction of dipoles to control the built-in potential of the devices offers an opportunity to enhance their performance without the need to modify the active layer itself. In this work, we demonstrate how the incorporation of mol. dipoles into the bathocuproine (BCP) hole-blocking layer of inverted perovskite solar cells improves the device open-circuit voltage (VOC) and, consequently, their performance. We explore a series of four thiaazulenic derivatives that exhibit increasing dipole moments and demonstrate that these mols. can be introduced into the solution-processed BCP layer to effectively increase the built-in potential within the device without altering any of the other device layers. As a result, the VOC of the devices is enhanced by up to 130 mV, with larger dipoles resulting in higher VOC. To investigate the limitations of this approach, we employ numerical device simulations that demonstrate that the highest dipole derivatives used in this work eliminate all limitations on the VOC stemming from the built-in potential of the device. In the experimental materials used by the author, we found 2,5-Dibromothiophene(cas: 3141-27-3Reference of 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.Reference of 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Song, Chaoyang’s team published research in ACS Sustainable Chemistry & Engineering in 2020 | 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) .Category: bromides-buliding-blocks

《Photocatalytically Active Conjugated Porous Polymers via Click Chemistry for Heterogeneous Dehydrogenation of Hydrazo Aromatics》 was written by Song, Chaoyang; Liu, Biao; Nie, Junqi; Ma, Chao; Lu, Cuifen; Wang, Feiyi; Yang, Guichun; Chen, Zuxing. Category: bromides-buliding-blocks And the article was included in ACS Sustainable Chemistry & Engineering in 2020. The article conveys some information:

Aromatic azo compounds are an important class of raw materials and are widely used in chem. industries. However, current synthetic methods have many disadvantages, which limit their practical utility. Here, we report a facile approach to prepare 1,2,3-triazole-contained conjugated porous polymers (CPPs; Ta-Ths) through click reaction of azide and terminal alkynes and employ the click-based CPPs for the first time as photocatalysts. By changing the structure of alkyne monomer, Ta-Ths with distinct optoelectronic properties are obtained to effectively catalyze the visible light-driven oxidative dehydrogenation of hydrazo aromatics Moreover, the Ta-Ths show much higher catalytic activity as compared with previous homogeneous photocatalysts. The CPP that possesses better charge transfer efficiency and lower charge recombination rate was found to have more catalytic activity than the others. In addition, this protocol was demonstrated on a gram scale without any erosion of yield. Furthermore, the polymer photocatalyst has shown reliable recyclability with no significant loss in its catalytic activity. The click-based conjugated porous polymers (Ta-Ths) are found to be highly active heterogeneous photocatalysts for the synthesis of aromatic azo compounds2,5-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 polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ding, Li’s team published research in Macromolecules (Washington, DC, United States) in 2021 | 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Formula: C4H2Br2S

Ding, Li; Wang, Zi-Yuan; Yao, Ze-Fan; Liu, Nai-Fu; Wang, Xin-Yi; Zhou, Yang-Yang; Luo, Longfei; Shen, Zhihao; Wang, Jie-Yu; Pei, Jian published their research in Macromolecules (Washington, DC, United States) in 2021. The article was titled 《Controllable Transformation between the Kinetically and Thermodynamically Stable Aggregates in a Solution of Conjugated Polymers》.Formula: C4H2Br2S The article contains the following contents:

The aggregation behaviors of conjugated polymers significantly influence their performance in solution-processed optoelec. devices. Traditionally, the formation of aggregates from the self-assembly of conjugated polymers is considered as a thermodn. equilibrium process. The abundant degree of conformation freedom of conjugated polymers might lead to complex aggregation behaviors in solution However, the energy landscape of conjugated polymers during aggregation has rarely been studied before, which would provide the energetic and structural information about different aggregates. Our work tried to unravel the energy landscape of conjugated polymers during aggregation and investigate the energetic and structural information of the thermodynamically and kinetically stable aggregates in solution Herein, kinetically and thermodynamically stable aggregates of naphthalene diimide (NDI)-based polymers are obtained through rational mol. design and thermodn. control. Investigation of the theor. calculation, photophys. properties, and morphologies of the conjugated polymers demonstrates the formation of and differences between kinetically and thermodynamically stable aggregates. The energetic and structural anal. of kinetically and thermodynamically stable aggregates here provide insight into the relations among the structure, morphol., and properties of conjugated polymers at the mol. level. This work demonstrates the energy landscape of conjugated polymers during aggregation and further extends our understanding of the aggregation mechanisms. The results came from multiple reactions, including the reaction of 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

Xue, Cece’s team published research in Macromolecules (Washington, DC, United States) in 2022 | 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Recommanded Product: 3141-27-3

In 2022,Xue, Cece; Peng, Min; Zhang, Zhikai; Han, Xue; Wang, Qing; Li, Conger; Liu, Haiming; Li, Tao; Yu, Na; Ren, Yi published an article in Macromolecules (Washington, DC, United States). The title of the article was 《Conjugated Boron Porous Polymers Having Strong p-π* Conjugation for Amine Sensing and Absorption》.Recommanded Product: 3141-27-3 The author mentioned the following in the article:

Conjugated porous polymers (CPPs) have drawn significant attention in materials science. We envisioned that simple building blocks may provide a more general platform for constructing functional CPPs. Herein, we report a new synthetic strategy to incorporate a simple boron element building block into CPPs by using efficient boron/tin (B/Sn) exchange reaction, which is distinct from the commonly employed Pd-catalyzed C-C coupling toward CPPs in the literature. More importantly, this synthetic strategy allows us to construct the first example of the CPPs having the nonprotected B-centers and the highest B-content reported to date, which is beneficial for strong Lewis acid-base interactions. The boron (B)-CPPs exhibit the well-defined chem. structures and the microsized porous structures. This synthetic protocol also allows us to access the B-CPPs having the smallest aromatic linker between the B-centers, which can enhance the electronic communications of the adjacent B-centers and increase Lewis acidity of the B-centers. Because of the strong electronic communications of the adjacent B-centers via the p-π* coupling, the B-CPPs exhibit higher Lewis acidity compared to that of the B-monomer. Combining the high microporosity, the high Lewis acidity, and small steric protection of the B-centers endows these B-CPPs with excellent triethylamine and pyridine sensing and absorptivity properties.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 may be used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Recommanded Product: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

King, Andrew J.’s team published research in Angewandte Chemie, International Edition in 2022 | 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Synthetic Route of C4H2Br2S

In 2022,King, Andrew J.; Zhukhovitskiy, Aleksandr V. published an article in Angewandte Chemie, International Edition. The title of the article was 《A Chain-Growth Mechanism for Conjugated Polymer Synthesis Facilitated by Dinuclear Complexes with Redox-Active Ligands》.Synthetic Route of C4H2Br2S The author mentioned the following in the article:

Conjugated polymers are widely used in energy conversion and sensor applications, but their synthesis relies on imprecise step-growth or narrow-scope chain-growth methods, typically based on transition metal (TM)-catalyzed cross-coupling. Here we report that a dinickel complex with a redox-active naphthyridine diimine ligand accesses new chain-growth mechanistic manifolds for both donor and acceptor conjugated polymers, represented by poly(3-hexylthiophene), poly(2,3-bis(2-ethylhexyl)thienopyrazine), and poly(2-(2-octyldodecyl)benzotriazole). For the latter, our method is particularly effective: we achieve high ds.p. (DP) (>100) with moderate dispersities (D) of ≈1.4. Mechanistic anal. supports a radical/radical anion chain-growth mechanism with organometallic intermediates instead of TM-catalyzed cross-couplings. Hence, our work develops new mechanisms for conjugated polymer synthesis and furnishes insights about the elementary reactivity of dinuclear complexes.2,5-Dibromothiophene(cas: 3141-27-3Synthetic Route of 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Synthetic Route of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Jiang Tian’s team published research in Angewandte Chemie, International Edition in 2020 | 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Synthetic Route of C4H2Br2S

《Approaching the Integer-Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross-Coupling》 was published in Angewandte Chemie, International Edition in 2020. These research results belong to Liu, Jiang Tian; Hase, Hannes; Taylor, Sarah; Salzmann, Ingo; Forgione, Pat. Synthetic Route of C4H2Br2S The article mentions the following:

A library of sym. linear oligothiophene was prepared employing decarboxylative cross-coupling reaction as the key transformation. Thiophene potassium carboxylate salts were used as cross-coupling partners without the need of co-catalyst, base, or additives. This method demonstrates complete chemoselectivity and is a comprehensive greener approach compared to the existing methods. The modularity of this approach is demonstrated with the preparation of discreet oligothiophenes with up to 10 thiophene repeat units. Sym. oligothiophenes are prototypical organic semiconductors where their mol. elec. doping as a function of the chain length can be assessed spectroscopically. An oligothiophene critical length for integer charge transfer is 10 thiophene units, highlighting the potential use of discrete oligothiophenes as doped conduction or injection layers in organic electronics applications. The results came from multiple reactions, including 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Synthetic Route of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary