Tag: 200-300

《Insights into constitutional isomeric effects on donor-acceptor intermolecular arrangements in non-fullerene organic solar cells》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2019. These research results belong to Lee, Jungho; Go, Eun Min; Dharmapurikar, Satej; Xu, Jianqiu; Lee, Sang Myeon; Jeong, Mingyu; Lee, Kyu Cheol; Oh, Jiyeon; Cho, Yongjoon; Zhang, Chunfeng; Xiao, Min; Kwak, Sang Kyu; Yang, Changduk. Formula: C7H5Br2F The article mentions the following:

Donor-acceptor intermol. interactions and/or arrangements are key factors determining the performance of organic solar cells (OSCs). Herein, two ITIC-based isomeric acceptors (o-F-ITIC and m-F-ITIC) with fluorine atoms at ortho and meta positions within the side chains were developed. The developed acceptors showed different interactions and/or arrangements with the donor counterpart (PBDB-T), which caused a significant variation in the power conversion efficiency (PCE) of OSCs. The PCE of the PBDB-T:o-F-ITIC device was 11.11% vs. 8.90% of the PBDB-T:m-F-ITIC device. A detailed theor. anal. of the intermol. complexes formed between F-ITICs and PBDB-T allows a determination of how the two isomeric acceptors interact differently with PBDB-T. Relative to PBDB-T:m-F-ITIC with a preferential DCI-BDD complex, PBDB-T:o-F-ITIC showed a closer donor-acceptor interaction, with a tightly packed parallel-like DCI-BDT complex, resulting in larger interfacial areas. These behavioral characteristics explain in detail the exptl. results obtained from the comparison of the two blend systems relating to elec. and morphol. properties. Moreover, transient absorption spectroscopy of PBDB-T:o-F-ITIC revealed superior hole/electron transfer and separation processes, providing further evidence of the presence of beneficial intermol. complexes. This study facilitates the understanding of the role of constitutional isomerism both in intermol. interactions and in promoting the development of high-performance OSCs. The experimental process involved the reaction of 4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5Formula: C7H5Br2F)

4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Formula: C7H5Br2F 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

Konovalova, Irina S.; Shishkina, Svitlana V.; Kobzev, Dmytro; Semenova, Olha; Tatarets, Anatoliy published their research in Acta Crystallographica, Section E: Crystallographic Communications in 2021. The article was titled 《Crystal structures and Hirshfeld analysis of 4,6-dibromoindolenine and its quaternized salt》.SDS of cas: 626-40-4 The article contains the following contents:

4,6-Dibromo-2,3,3-trimethyl-3H-indole, C11H11Br2N, exists as a neutral mol. in the asym. unit. The asym. unit of 4,6-dibromo-2,3,3-trimethyl-3H-indol-1-ium iodide, C12H14Br2N+·I-, contains one organic cation and one iodine anion. The pos. charge is localized on the quaternized nitrogen atom. In the crystal, mols. of 4,6-dibromoindolenine are linked by C-Br···π halogen bonds, forming zigzag chains propagating in the [001] direction. The mols. of the salt form layers parallel to the (010) plane where they are linked by C-H···Br hydrogen bonds, C-Br···Br and C-Br···I halogen bonds. The Hirshfeld surface anal. and two dimensional fingerprint plots were used to analyze the intermol. contacts present in both crystals. The results came from multiple reactions, including the reaction of 3,5-Dibromoaniline(cas: 626-40-4SDS of cas: 626-40-4)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Amines have a free lone pair with which they can coordinate to metal centers. Amine–metal bonds are weaker because amines are incapable of backbonding, but they are still important for sensing applications.While stronger than hydrogen bonds, amine–metal bonds are still weaker than both covalent and ionic bonds.SDS of cas: 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Highly conductive fluorine-based anion exchange membranes with robust alkaline durability》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. These research results belong to Gao, Xue Lang; Sun, Li Xuan; Wu, Hong Yue; Zhu, Zhao Yu; Xiao, Nan; Chen, Jia Hui; Yang, Qian; Zhang, Qiu Gen; Zhu, Ai Mei; Liu, Qing Lin. Related Products of 629-03-8 The article mentions the following:

Anion exchange membranes (AEMs) with robust alk. stability and high ionic conductivity are imminently required for the promising electrochem. energy conversion devices – fuel cells. Herein, a series of novel crosslinked AEMs with hydrophobic fluorine-based polymer backbones bearing special functional sites and hydrophilic long flexible multi-cation side chains are prepared Morphol. observation and ion transport anal. confirm the existence of distinct microphase separation and efficient ion-conducting channels within the membranes resulting from the inherent chem. structure. A highest ionic conductivity of 136.27 mS cm-1 can be achieved by TQ-PDBA-70% (IEC = 2.16 meq. g-1) at 80°C. Meanwhile, the prepared TQ-PDBA-X AEMs exhibit a desirable swelling ratio (<10%) and excellent mech. properties (tensile stress > 22.8 MPa). It is worth noting that the retained ionic conductivity of the TQ-PDBA-70% AEM is 98.14%, 95.50%, 77.90%, 72.02% and 58.15% after being immersed in 1, 2, 4, 8 and 10 M KOH at 80°C for 1000 h, resp. Chem. structure change of the TQ-PDBA-70% AEM before and after the alk. stability test is negligible, as revealed by FT-IR. Moreover, TQ-PDBA-70% has high ionic exchange capacity (IEC) retention and maintains good mech. properties. A single cell assembled with TQ-PDBA-70% has a maximum power d. of 158.8 mW cm-2 under a c.d. of 360 mA cm-2. These results suggest that this type of structure opens a new strategy for developing high performance AEMs. The experimental part of the paper was very detailed, including the reaction process of 1,6-Dibromohexane(cas: 629-03-8Related Products of 629-03-8)

1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Related Products of 629-03-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Nino, Patricia; Cabaa, Marta; Aguilar, Nuria; Terricabras, Emma; Albericio, Fernando; Fernandez, Joan-Carles published an article in Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry. The title of the article was 《Efficient three-component synthesis of diversely substituted tetrahydro-1H-cyclopenta[c]quinolines》.Name: 4-Bromo-2-ethylbenzaldehyde The author mentioned the following in the article:

The synthesis of highly functionalized substituted tetrahydro-1H-cyclopenta[c]quinoline and its reduced derivatives hexahydro-1H-cyclopenta[c]quinolines via Povarov reaction in high diastereoselectivity and high to moderate yields is described. In addition, the relative stereochem. of the α-substituent to the tetrahydroquinoline nitrogen, as well as the regioselectivity of reaction, is shown to depend upon subtle substituent effects on the aldehyde and aniline precursors. In most cases, a preference for the formation of endo diastereomeric adducts is observed but for reactions with ortho-substituted aldehydes, the formation of exo adducts is also observed The exo-diastereoselectivity is found to be higher when the bulky size of this ortho group increases. Preparation of ortho and diortho-substituted aromatic aldehyde precursors of the Povarov reaction is also reported. In the experiment, the researchers used many compounds, for example, 4-Bromo-2-ethylbenzaldehyde(cas: 1114808-89-7Name: 4-Bromo-2-ethylbenzaldehyde)

4-Bromo-2-ethylbenzaldehyde(cas: 1114808-89-7) 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. Name: 4-Bromo-2-ethylbenzaldehyde 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

Walesa-Chorab, Monika; Muras, Kacper; Filiatrault, Heather L.; Skene, W. G. published an article in 2022. The article was titled 《Suitability of alkyne donor-π-donor-π-donor scaffolds for electrofluorochromic and electrochromic use》, and you may find the article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices.Recommanded Product: 2,5-Dibromothiophene The information in the text is summarized as follows:

A series of electroactive materials consisting of an aromatic core that was conjugated with two alkynes and flanked with two tri-Ph amines was investigated as electrochromes and electrofluorochromes. The yellow colored conjugated donor-π-donor-π-donor (D-π-D-π-D) alkynes could be electrochem. oxidized because of the terminal triphenylamine amines. The oxidation potential varied by 170 mV contingent on the central aromatic core (thiophene and EDOT) and whether the electroactive group was either unsubstituted or substituted with methyls in the 4,4′-positions. The emission of the chromophores was also contingent on the solvent and it spanned upwards of 90 nm. The emission yield was consistent (ca. 40%) and it was insensitive to the type of aromatic core, the triphenylamine substitution, and the solvent. The collective visible color and the electroactivity of the D-π-D-π-D compounds were ideal properties for electrochromic applications. The compounds underwent reversible color change from yellow to blue with the applied potential. The electrochromic devices fabricated from the D-π-D-π-D alkynes could be operated upwards of 15 h and operating devices that were flexible could also be prepared The intrinsic fluorescence of the D-π-D-π-D compounds could be reversibly turned-off with the applied potential, which enables them to be used in operating electrofluorochromic devices. Although the alkyne framework was robust for electrochromic use, it could react with tetracyanoethylene, leading to octanitrile substituted D-π-A-π-D-π-A-π-D chromophores that were red in color. The experimental process involved the reaction of 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 in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Recommanded Product: 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Triphenylamine- and triazine-containing hydrogen bonded complexes: liquid crystalline supramolecular semiconductors》 was written by Feringan, Beatriz; Termine, Roberto; Golemme, Attilio; Granadino-Roldan, Jose M.; Navarro, Amparo; Gimenez, Raquel; Sierra, Teresa. Formula: C9H11BrO3This research focused ontriphenylamine triazine complex preparation liquid crystal supramol semiconductor. The article conveys some information:

It was reported that triphenylamine liquid crystals can attain very high hole mobility values in a hexagonal columnar mesophase, up to μ ≈ 5 cm2 V-1 s-1. The columnar liquid crystalline phase was obtained by a proper design of a supramol. mesogen, and this was unprecedented for triphenylamine liquid crystals. In fact, the supramols. were formed by hydrogen-bonded 1 : 3 complexes of a star-shaped triazine core and three triphenylamine peripheral units. The resulting hexagonal columnar mesophase acted as a successful scaffold that confines TPA units at the periphery of columns. Challenging DFT theor. investigations into a model based on such supramol. systems involving a large number of atoms were undertaken to explore the stability and geometry of the complexes and their electronic properties. After reading the article, we found that the author used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Formula: C9H11BrO3)

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.Formula: C9H11BrO31-Bromo-3,4,5-trimethoxybenzene can be used to synthesize analogs of HA14-1, which shows promising anticancer properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Feriancova, Lucia; Cigan, Marek; Kozisek, Jozef; Gmucova, Katarina; Nadazdy, Vojtech; Dubaj, Tibor; Sobota, Michal; Novota, Miroslav; Weis, Martin; Putala, Martin published an article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The title of the article was 《Dithienylnaphthalenes and quaterthiophenes substituted with electron-withdrawing groups as n-type organic semiconductors for organic field-effect transistors》.SDS of cas: 3141-27-3 The author mentioned the following in the article:

The authors report a successful design strategy for n-type semiconductor materials based on an analogy with efficient p-type semiconductors, by introducing electron-withdrawing groups while maintaining the symmetry of the mols. upon omitting one thiophene unit on each side of the oligoaryl core. Two series of dithienylnaphthalenes and quaterthiophenes substituted with various electron-withdrawing groups have been synthesized using Suzuki or Stille cross-coupling, and Knoevenagel condensation as key steps. The comparison of theor. and exptl. mol. properties related to the effect of electron-withdrawing groups is presented. Both the DFT-calculated and exptl. determined values of the energy gap between frontier orbitals have shown a decreasing trend in the order of perfluoroalkyl, acyl, perfluoroacyl, nitro, alkyldicyanovinyl and perfluoroalkyldicyanovinyl in both series. The x-ray anal. of five derivatives revealed almost planar geometry of the oligoaryl core with a herringbone or lamellar packing motif. The crystal structures of quaterthiophenes exhibited an s-cis conformation between the outer thiophenes in the crystals, in contrast to the theor. prediction. Carbonyl-based compounds showed n-type behavior as an active layer in OFET devices with an electron mobility of up to 0.57 cm2 V-1 s-1. The results came from multiple reactions, including the reaction of 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

Parker, Rachel R.; Liu, Denghui; Yu, Xiankang; Whitwood, Adrian C.; Zhu, Weiguo; Williams, J. A. Gareth; Wang, Yafei; Lynam, Jason M.; Bruce, Duncan W. published an article in 2021. The article was titled 《Synthesis, mesomorphism, photophysics and device performance of liquid-crystalline pincer complexes of gold(III)》, and you may find the article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices.Related Products of 2675-79-8 The information in the text is summarized as follows:

Emissive gold(III) complexes of pincer 2,6-diphenylpyridines also bearing a phenylacetylide ligand have been modified at both the pincer and phenylacetylide to confer liquid crystalline properties, with most complexes showing a columnar hexagonal phase in the condensed phase. Solution NMR studies show a preferred orientation for self-association, consistent with structural parameters in the liquid crystal phase obtained by X-ray methods. While the pattern of substitution of the phenylacetylide has no discernible effect on the photophysics, when two alkoxy chains are attached to the pincer ligands, photoluminescence quantum yields (PLQY) of around 3% are found, whereas when four alkoxy chains are attached the PLQY increases significantly to 36%. Insight from computational chem. indicated that the incorporation of the alkoxy donor groups raises the energy of the pincer-based HOMO-1 orbital, with a concomitant lowering of the LUMO ← HOMO-1 transition energy, consistent with an exptl. observed red shift. The gold complexes were fabricated into OLED devices using solution processing methods, being doped into the emissive layer at 5%, leading to external quantum efficiencies of up to 7.14%, values that compare well with those of related complexes in the literature. In addition to this study using 1-Bromo-3,4,5-trimethoxybenzene, there are many other studies that have used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Related Products of 2675-79-8) was used in this study.

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.Related Products of 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

In 2018,Surnar, Bapurao; Basu, Uttara; Banik, Bhabatosh; Ahmad, Anis; Marples, Brian; Kolishetti, Nagesh; Dhar, Shanta published 《Nanotechnology-mediated crossing of two impermeable membranes to modulate the stars of the neurovascular unit for neuroprotection》.Proceedings of the National Academy of Sciences of the United States of America published the findings.Application In Synthesis of 8-Bromooctanoic acid The information in the text is summarized as follows:

The success of nanoparticle-mediated delivery of antioxidant and antiinflammatory-based neuroprotectants to the brain to improve neuronal functions in neurodegenerative diseases has demonstrated lesser impact instead of achieving its full potential. We hypothesized that these failures were due to a combination of parameters, such as: (i) unavailability of a delivery vehicle, which can reproducibly and efficiently transport through the brain capillary endothelium; (ii) inefficient uptake of therapeutic nanoparticles in the neuronal cell population; and (iii) limited ability of a single nanoparticle to cross the two most-impermeable biol. barriers, the blood brain barrier and mitochondrial double membrane, so that a nanoparticle can travel through the brain endothelial barrier to the mitochondria of target cells where oxidative damage is localized. Herein, we demonstrate optimization of a biodegradable nanoparticle for efficient brain accumulation and protection of astrocytes from oxidative damage and mitochondrial dysfunctions to enhance the neuroprotection ability of astrocytes toward neurons using neurodegeneration characteristics in SOD1G93A rats. This biodegradable nanomedicine platform with the ability to accumulate in the brain has the potential to bring beneficial effects in neurodegenerative diseases by modulating the stars, astrocytes in the brain, to enhance their neuroprotective actions. The experimental process involved the reaction of 8-Bromooctanoic acid(cas: 17696-11-6Application In Synthesis of 8-Bromooctanoic acid)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.Application In Synthesis of 8-Bromooctanoic acid

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Dong, Changshuai; Meng, Bin; Liu, Jun; Wang, Lixiang published an article in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. The title of the article was 《An n-type narrow-bandgap organoboron polymer with quinoidal character synthesized by direct arylation polymerization》.SDS of cas: 3141-27-3 The author mentioned the following in the article:

Narrow bandgap conjugated polymers have received great attention due to their wide applications in optoelectronic devices. Because of the synthetic difficulty, it is greatly challenging to develop n-type conjugated polymers with a narrow bandgap with quinoidal character. Herein, we report an n-type narrow-bandgap organoboron polymer with quinoidal character, PBN-TP. PBN-TP is designed with alternating units of BNBP (double B ← N bridged bipyridine) and quinoidal TP (thieno[3,4-b]pyrazine). Direct arylation polymerization of the di-bromo BNBP unit and the di-hydro TP unit affords the organoboron polymer with a high number-average mol. weight of 28.3 kDa. Compared with the control polymer with alternating units of BNBP and thiophene, PBN-T, the replacement of the thiophene unit with a quinoidal TP unit reduces the bond length alternation (BLA) of carbon-carbon bonds and planarized the polymer backbone of PBN-TP, leading to an enhanced contribution of the polymer quinoidal resonance structure. As a result, compared with PBN-T, PBN-TP shows a much reduced bandgap of 1.50 eV, which is among the lowest reported for n-type organoboron polymers based on BNBP. Moreover, due to the low LUMO energy level, PBN-TP could be readily n-doped and used as an n-type polymer thermoelec. material. This work provides a new n-type narrow bandgap conjugated polymer with quinoidal character. In the experiment, the researchers used many compounds, for example, 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