Day: February 6, 2023

Synthesis of novel sensitizers with a linear conjugated di(1-benzothieno)[3,2-b:2′,3′-d]pyrrole unit for dye-sensitized solar cells was written by Zhang, Hai;Iqbal, Zafar;Chen, Zhen-E.;Hong, Yanping. And the article was included in Dyes and Pigments in 2019.Electric Literature of C8H4Br2S This article mentions the following:

Three novel D-π-A structural metal-free organic sensitizers (DBTP-1∼3) are designed, in which a linear planar aromatic group, the di(1-benzothieno)[3,2-b:2′,3′-d]pyrrole is first introduced as the π-bridge for dye-sensitized solar cells. Triphenylamine, 9,9-dimethyle-9H-fluorene and carbazole serve as the electron donor, resp., while cyanoacrylic acid is used as an electron acceptor and anchoring unit. The photophys., electrochem., theor. calculations have been employed to apprehend the correlation between the structures of DBTP-1∼3 and their photovoltaic performances. Further, co-adsorption studies are used to investigate the electronic recombination of the target dyes. As a result, the maximum power conversion efficiency of 6.50% (short-circuit current of 14.66 mA cm^-2, open-circuit voltage of 0.67 V, and fill factor of 66%) for the 2 mM chenodeoxycholic acid co-adsorbed device based on DBTP-1 is obtained, while without any co-adsorbent it gives efficiency of 4.55%. The standard dye N719 gives 8.54% power conversion efficiency. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Electric Literature of C8H4Br2S).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Electric Literature of C8H4Br2S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and properties of an unsymmetrical diarylethene bearing a chlorine atom was written by Wang, Liqin;Pu, Shouzhi;Yan, Liushui;Liu, Weijun. And the article was included in Key Engineering Materials in 2011.COA of Formula: C9H7BrS This article mentions the following:

A new unsym. photochromic diarylethene 1-(2-methyl-benzothiophenyl)-2-(2-methyl-5-(4-chlorophenyl))perfluoroncyclopentene (1a), was synthesized and its optoelectronic properties, such as photochromism in solution as well as in poly(Me methacrylate) (PMMA) amorphous films and fluorescence were investigated. The photochromic reaction kinetics indicated that the cyclization process of 1a belongs to the zeroth order reaction and the cycloreversion process belongs to the first order reaction. Using diarylethene 1/PMMA film as recording medium and a linearly polarized 633 nm laser diode for recording and readout, polarization multiplexed image recording can be carried out in this film, which illustrated that the diarylethene can be potentially used as holog. optical recording medium. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9COA of Formula: C9H7BrS).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.COA of Formula: C9H7BrS

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and properties research of a photochromic diarylethene bearing a ethynyl moiety was written by Sun, Fengxia;Cui, Shiiqiang;Pu, Shouzhi. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2014.SDS of cas: 10243-15-9 This article mentions the following:

A new unsym. photochromic diarylethene compound, 1-(2-Methyl-3-benzothiophene)-2-(5-(4-ethynyl)-2-methylthiophen-3-yl) Perfluorocyclopentene (1o), was synthesized and its photochem., fluorescence properties were investigated systematically both in solution and PMMA amorphous film. The results showed that this compound exhibited reversible photochromism, changing from colorless to pink after irradiation with 297 nm UV light both in solution and in PMMA amorphous film. The photochromic reaction kinetics indicated that the cyclization processes of 1 belong to the zeroth order reaction and the cycloreversion process belong to the first order reaction. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9SDS of cas: 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.SDS of cas: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Photomobile Polymer Materials: Photoresponsive Behavior of Cross-Linked Liquid-Crystalline Polymers with Mesomorphic Diarylethenes was written by Mamiya, Jun-ichi;Kuriyama, Akito;Yokota, Naoki;Yamada, Munenori;Ikeda, Tomiki. And the article was included in Chemistry – A European Journal in 2015.SDS of cas: 10243-15-9 This article mentions the following:

Cross-linked liquid-crystalline (LC) polymers with a mesomorphic diarylethene were prepared to demonstrate a versatile strategy for cross-linked photochromic LC polymers as photomobile materials. Upon exposure to UV light to cause photocyclization of the diarylethene chromophore, the cross-linked polymer films bend toward an actinic light source. By irradiation with visible light to cause a closed-ring to open-ring isomerization, the bent films revert to the initial flat state. Without visible-light irradiation, the bent films remain bent even at 120 °C, indicating high thermal stability of the cross-linked diarylethene LC polymers. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9SDS of cas: 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.SDS of cas: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

CYP17 inhibitors. Annulations of additional rings in methylene imidazole substituted biphenyls: synthesis, biological evaluation and molecular modeling was written by Pinto-Bazurco Mendieta, Mariano A. E.;Negri, Matthias;Hu, Qingzhong;Hille, Ulrike E.;Jagusch, Carsten;Jahn-Hoffmann, Kerstin;Mueller-Vieira, Ursula;Schmidt, Dirk;Lauterbach, Thomas;Hartmann, Rolf W.. And the article was included in Archiv der Pharmazie (Weinheim, Germany) in 2008.Quality Control of Methyl 5-bromobenzo[b]thiophene-2-carboxylate This article mentions the following:

Twenty-one novel compounds originating from two classes of annulated biphenyls were synthesized as mimetics of the steroidal A- and C-rings and examined for their potency as inhibitors of human CYP17. Selected compounds were tested for inhibition of the hepatic CYP enzyme 3A4. Potent CYP17 inhibitors were found for each class, compound I (17 and 71% at 0.2 and 2 μM, resp.) and II (591 nM). Compound II showed only weak inhibition of CYP3A4 (32 and 64% at 2 and 10 μM, resp.). Both compounds, however, exhibited moderate to strong inhibition of the glucocorticoid-forming enzyme CYP11B1. The most interesting compounds were docked into our protein model. They bound into one of the modes which we have previously published. New interaction regions were identified. In the experiment, the researchers used many compounds, for example, Methyl 5-bromobenzo[b]thiophene-2-carboxylate (cas: 7312-11-0Quality Control of Methyl 5-bromobenzo[b]thiophene-2-carboxylate).

Methyl 5-bromobenzo[b]thiophene-2-carboxylate (cas: 7312-11-0) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Quality Control of Methyl 5-bromobenzo[b]thiophene-2-carboxylate

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Practical one-pot transformation of electron-rich aromatics into aromatic nitriles with molecular iodine and aqueous NH₃ using Vilsmeier-Haack reaction was written by Ushijima, Sousuke;Moriyama, Katsuhiko;Togo, Hideo. And the article was included in Tetrahedron in 2012.Reference of 55219-11-9 This article mentions the following:

Various electron-rich aromatics could be efficiently transformed into the corresponding aromatic nitriles in good to moderate yields by treatment with DMF and POCl₃, followed by the reaction with mol. iodine or 1,3-diiodo-5,5-dimethylhydantoin (DIH) in aqueous NH₃. Some of the less reactive aromatics, such as anisole, 1,2-dimethoxybenzene, 1,4-dimethoxybenzene, and mesitylene, could also be transformed into the corresponding aromatic nitriles in good to moderate yields using N-methylformanilide and O(POCl₂)₂, followed by reaction with mol. iodine in aqueous NH₃. Moreover, propiophenone derivatives could be successfully transformed into the corresponding β-chlorocinnamonitriles by the reaction with DMF and POCl₃, followed by the reaction with mol. iodine and aqueous NH₃. These reactions are novel metal-free one-pot methods for the preparation of aromatic nitriles from electron-rich aromatics and β-chlorocinnamonitriles from propiophenones. In the experiment, the researchers used many compounds, for example, Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9Reference of 55219-11-9).

Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Reference of 55219-11-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Materials with synthesis and properties of photochromic diarylethene was written by Xue, Yaming;Sun, Fengxia;Pu, Shouzhi. And the article was included in Applied Mechanics and Materials in 2014.Recommanded Product: 10243-15-9 This article mentions the following:

An unsym. photochromic diarylethene was synthesized and its photochromism properties were investigated in detail. The compound exhibited remarkable photochromism, changing from colorless to light pink after irradiation with 297 nm UV light, in which absorption maxima were observed at 498 nm in hexane and at 505 nm in PMMA amorphous films, resp. The photochromic reaction kinetics was studied in solution and their cyclization/cycloreversion processes belong to zeroth/first order reaction in hexane. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Recommanded Product: 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Recommanded Product: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and Application of 1-[(2-methyl-3-benzothiophene)]-2-[2-methyl-5-(1,3-dioxolane)-3-thienyl]perfluorocyclopentene was written by Fu, Yinglong;Zhou, Lingyao;Fan, Congbin;Pu, Shouzhi. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2015.Electric Literature of C9H7BrS This article mentions the following:

A new unsym. photochromic diarylethene I was synthesized and its photochromic and fluorescence properties were investigated in detail. The results showed this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light in solution Compound I changed from colorless to pink upon irradiation with 297 nm UV light, in which absorption maxima were observed at 516 nm in acetonitrile. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Electric Literature of C9H7BrS).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Electric Literature of C9H7BrS

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Nickel-catalyzed hydrogenolysis of unactivated carbon-cyano bonds was written by Patra, Tuhin;Agasti, Soumitra;Modak, Atanu;Maiti, Debabrata. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2013.Name: Benzo[b]thiophene-2-carbonitrile This article mentions the following:

Selective hydrogenolysis of C-CN bonds can allow chemists to take advantage of ortho-directing ability, α-C-H acidity, and electron withdrawing ability of the cyano group for synthetic manipulations. We have discovered hydrogenolysis of aryl and aliphatic cyanides under just 1 bar of hydrogen by using a nickel catalyst. E.g., in presence of Ni(COD)₂, tricyclohexylphosphine, and AlMe₃, hydrogenolysis of aromatic nitrile (I) gave 79% II. This protocol was applied in the aryl cyanide directed functionalization reaction and α-substitution of benzyl cyanides. In the experiment, the researchers used many compounds, for example, Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9Name: Benzo[b]thiophene-2-carbonitrile).

Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Name: Benzo[b]thiophene-2-carbonitrile

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Photoinduced Refractive Index Change of a Photochromic Diarylethene Polymer was written by Kim, Eunkyoung;Choi, Yun-Ki;Lee, Myung-Hyun. And the article was included in Macromolecules in 1999.Recommanded Product: 10243-15-9 This article mentions the following:

The effect of photoirradiation on the refractive index of a diarylethene polymer was studied. The diarylethene polymer was prepared by a radical polymerization using 1-[6′-(methacryoyloxyethyloxycarbonyl)-2′-methylbenzo[b]thiophen-3′-yl]-2-(2”-methylbenzo[b]thiophen-3”-yl) hexafluorocyclopentene (BTF6MA), styrene, and Bu methacrylate. A colorless film prepared from the diarylethene polymer turned a deep red hue upon exposure to UV light. The red color was immediately bleached by visible light, and such coloration and bleaching of the polymer film could be switched reversibly by using two light source of UV and visible light. The refractive index (n_TE) of the polymer film, with 5.3 mol % of BTF6MA, was determined as 1.5555 and 1.5459 by a prism coupler using TE polarized light of 633 and 830 nm, resp. Upon irradiation with light of 365 nm, the refractive index was increased, resulting in a photoinduced refractive index change (Δn_TE) of 8 × 10^-4 as monitored by light of 830 nm. Δn_TE was dependent on the wavelength of the monitoring light. The dispersion of light in the diarylethene polymer film could be simulated by the Sellmeier equation, n_λ² = n_∞² + Dλ₀²/ (λ² – λ₀²), in which the refractive index at longest wavelength limit (n_∞) and the oscillator strength (D) for the colorless polymer film were determined as 1.5356 and 0.18, resp. Similarly, n_∞ and D values for the red polymer film, prepared by UV irradiation, were determined as 1.5368 and 0.042, resp. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Recommanded Product: 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Recommanded Product: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem