Category: 143-15-7

Zhang, Xiaoyi published the artcileNovel fluorescent columnar liquid crystal based on tetraphenylethylene-rufigallol-tetraphenylethylene triads, COA of Formula: C12H25Br, the publication is Journal of Molecular Structure (2022), 132210, database is CAplus.

Two new tetraphenylethylene- rufigallol-tetraphenylethylene triads 7a and 7b were synthesized in yield of 50%. These compounds were characterized by mass spectrometry, NMR spectroscopy, and elemental anal. Their mesomorphic behaviors were studied by polarization microscopy, DSC, and x-ray diffractometry. Study of their liquid crystalline behaviors indicated that 7a and 7b possessed the hexagonal columnar mesophase. 7b with dodecyl chains exhibited the low phase transition temperatures and wide range of mesophase temperatures in comparison with 7a. 7a and 7b exhibited excellent aggregation-induced emission in H₂O/THF solution The fluorescence quantum yields of these compounds in the solid state were 22 and 16%, resp. Results from this study suggest that sym. trimer was a good approach to construct novel fluorescence columnar liquid crystals.

Journal of Molecular Structure published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C65H82N2O18S2, COA of Formula: C12H25Br.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Li, Xiang published the artcileCatalytic remote hydrohalogenation of internal alkenes, Quality Control of 143-15-7, the publication is Nature Chemistry (2022), 14(4), 425-432, database is CAplus and MEDLINE.

Abstract: Primary alkyl halides have broad utility as fine chems. in organic synthesis. The direct halogenation of alkenes is one of the most efficient approaches for the synthesis of these halides. Internal alkenes, in particular mixtures of isomers from refineries, constitute readily available and inexpensive feedstock and are the most attractive starting materials for this synthesis. However, the hydrohalogenation of alkenes generally affords branched alkyl halides; there are no catalytic methods to prepare linear alkyl halides directly from internal alkenes, let alone from a mixture of alkene isomers. Here a report the remote oxidative halogenation of alkenes under palladium catalysis via which both terminal and internal alkenes yield primary alkyl halides efficiently. Engineering pyridine-oxazoline ligands by introducing a hydroxyl group is essential for achieving excellent chemo- and regioselectivity. The catalytic system is also good for the mixture of alkene isomers generated from dehydrogenation of alkanes, providing a window to investigate the high-value utilization of inexpensive alkanes.

Nature Chemistry published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Quality Control of 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Saraswathi, Sajena K. published the artcileThymine-Induced Dynamic Switching of Self-Assembled Nanofibers in Diaminotriazine-Functionalized Tetraphenylethylene Derivatives: Implications for One-Dimensional Molecular Devices, Quality Control of 143-15-7, the publication is ACS Applied Nano Materials (2022), 5(2), 3018-3027, database is CAplus.

One-dimensional (1D) supramol. polymers of aggregation-induced emission (AIE)-active chromophores belong to an in-demand group of functional materials because of their potential applications in optoelectronic devices like optical waveguides, lasers, displays, photodetectors, field-effect transistors, and solar cells. Herein, we report the hydrogen (H)-bondingdirected self-assembly of diaminotriazine-appended tetraphenylethylene derivatives (TPE-DAT) into 1D-fibers, hierarchical organogels and their thymine-induced structural transitions. The intermol. H-bonding ability of diaminotriazine (-DAT=DAT-) leads to the formation of TPE dimers, which upon subsequent cooperative self-assembly via π-π stacking forms micrometer-long, blue-emissive, bundled nanofibers. Further, we exploit the mol. recognition property of thymine nucleobase toward the diaminotriazine unit to tune the properties of this 1D assembly. In the presence of a thymine derivative (T-C12), the blue-emissive, bundled nanofibers of TPE-DAT having a width of 70-80 nm changes to green-emissive nanofibers of TPE-DATT-C12 with 30-40 nm width. This transition from blue- to green-emissive nanofibers and hierarchical gels was ascribed to the change in monomeric units, their mol. planarity, and packing in the self-assembly, which was further probed by UV-visible absorption, at. force microscopy (AFM), transmission electron microscopy (TEM), and fluorescence properties. In addition, to gain more insights into the mechanism of these 1D-assemblies, we explored the self-assembly properties of chiral and racemic derivatives of TPE-DAT and the gelation properties of TPE-DAT and TPE-DATT-C12. In short, this work demonstrates the use of the mol. recognition property of nucleobase and nucleobase analogs in constructing and controlling the formation of rarely reported 1D-assemblies of AIE-active TPE chromophores.

ACS Applied Nano Materials published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Quality Control of 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhang, Xiaoyi published the artcileNovel fluorescent columnar liquid crystal based on tetraphenylethylene-rufigallol-tetraphenylethylene triads, COA of Formula: C12H25Br, the publication is Journal of Molecular Structure (2022), 132210, database is CAplus.

Two new tetraphenylethylene- rufigallol-tetraphenylethylene triads 7a and 7b were synthesized in yield of 50%. These compounds were characterized by mass spectrometry, NMR spectroscopy, and elemental anal. Their mesomorphic behaviors were studied by polarization microscopy, DSC, and x-ray diffractometry. Study of their liquid crystalline behaviors indicated that 7a and 7b possessed the hexagonal columnar mesophase. 7b with dodecyl chains exhibited the low phase transition temperatures and wide range of mesophase temperatures in comparison with 7a. 7a and 7b exhibited excellent aggregation-induced emission in H₂O/THF solution The fluorescence quantum yields of these compounds in the solid state were 22 and 16%, resp. Results from this study suggest that sym. trimer was a good approach to construct novel fluorescence columnar liquid crystals.

Journal of Molecular Structure published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C65H82N2O18S2, COA of Formula: C12H25Br.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Li, Xiang published the artcileCatalytic remote hydrohalogenation of internal alkenes, Quality Control of 143-15-7, the publication is Nature Chemistry (2022), 14(4), 425-432, database is CAplus and MEDLINE.

Abstract: Primary alkyl halides have broad utility as fine chems. in organic synthesis. The direct halogenation of alkenes is one of the most efficient approaches for the synthesis of these halides. Internal alkenes, in particular mixtures of isomers from refineries, constitute readily available and inexpensive feedstock and are the most attractive starting materials for this synthesis. However, the hydrohalogenation of alkenes generally affords branched alkyl halides; there are no catalytic methods to prepare linear alkyl halides directly from internal alkenes, let alone from a mixture of alkene isomers. Here a report the remote oxidative halogenation of alkenes under palladium catalysis via which both terminal and internal alkenes yield primary alkyl halides efficiently. Engineering pyridine-oxazoline ligands by introducing a hydroxyl group is essential for achieving excellent chemo- and regioselectivity. The catalytic system is also good for the mixture of alkene isomers generated from dehydrogenation of alkanes, providing a window to investigate the high-value utilization of inexpensive alkanes.

Nature Chemistry published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Quality Control of 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Govindan, Karthick published the artcileMetal-Free N-H/C-H Carbonylation by Phenyl Isocyanate: Divergent Synthesis of Six-Membered N-Heterocycles, HPLC of Formula: 143-15-7, the publication is Journal of Organic Chemistry (2022), 87(13), 8719-8729, database is CAplus and MEDLINE.

A method using Ph isocyanate to synthesize carbonyl-containing N-heterocycles is reported. The metal-free novel approach for both N-H and C-H carbonylation processes was successfully refined, delivering a range of synthetically valuable derivatives of quinazoline-2,4(1H,3H)-dione, 2H-benzo[e] [1,2,4] thiadiazin-3(4H)-one 1,1-dioxide, and pyrrolo[1,2-a] quinoxalin-4(5H)-one. The protocol features broad substrates with diverse reactions suitable for excellent yields, mild conditions, and good functional group compatibility. Moreover, the applicability of the reaction was characterized by gram-scale synthesis and synthetic transformations for drug mols.

Journal of Organic Chemistry published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, HPLC of Formula: 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Tsuchiya, Motoki published the artcileSynthesis of Twisted Anthracenes: Induction of Twist Chirality by the Planar Chiral [2.2]Paracyclophane, COA of Formula: C12H25Br, the publication is Chemistry – An Asian Journal (2022), 17(15), e202200418, database is CAplus and MEDLINE.

Planar chiral [2.2]paracyclophane was employed as chiral scaffolds to twist an anthracene ring by tethering at its 1- and 8-positions; thus, twist chirality was induced in the anthracene moiety. The chiroptical properties of the resulting mol. I, including CD (CD) and circularly polarized luminescence (CPL), were found to be derived from the twist chirality. An analogous mol. II bearing long alkyl chains was a viscous liquid at ambient temperature, and its liquid film exhibited good CD and CPL profiles. Theor. studies were carried out to determine the origin of these properties in the ground and excited states, which reproduced well the exptl. results.

Chemistry – An Asian Journal published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C8H6ClN, COA of Formula: C12H25Br.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Wang, Haihua published the artcileConcurrent alkylation and crosslinking of polyaniline for enhanced anticorrosive performance of waterborne alkyd coating, Application In Synthesis of 143-15-7, the publication is Progress in Organic Coatings (2022), 106865, database is CAplus.

The uniform dispersion and long-term stability of hydrophobic polyaniline (PANI) in waterborne polymer matrix always remains a challenge. Here, PANI was chem. modified by 1,12-dibromododecane to prepare functionalized PANI (PANI-12Br(II)), and simultaneously achieve N-alkylation and chem. crosslinking of PANI chains. In addition, 1-bromododecane was utilized to modify PANI to prepare PANI-12Br(I) as a control. The degree of alkylation of PANI-12Br(II) was higher than that of PANI-12Br(I), as well as the content of N⁺ species in PANI-12Br(II). Also, the interaction between the PANI-12Br(II) chains decreased. The colloidal particle size decreased from 703.9 nm to 297.3 nm, and the dispersibility and long-term colloidal stability of PANI-12Br(II) in aqueous system were significantly improved. The water adsorption of as-prepared PANI-12Br(II)/WAR nanocomposite decreased from 18.37% to 4.27%, and the contact angle increased from 63.4° to 112.5°. Compared with WAR and PANI/WAR-0.5%, the coating resistance of PANI-12Br(II)/WAR-0.5% increased by 5 and 4 orders of magnitude, and the corrosion c.d. decreased by 3 and 2 orders of magnitude. The PANI-12Br(II)/WAR-0.5% displayed better long-term anticorrosive performance than PANI-12Br(I)/WAR-0.5%. The anticorrosive mechanisms were also put forward. The PANI-12Br(II) can be applied as a promising class of corrosion inhibitors in waterborne polymer matrixes.

Progress in Organic Coatings published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C3H5BN2O2, Application In Synthesis of 143-15-7.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Percec, Virgil published the artcileSelf-organization of rectangular bipyramidal helical columns by supramolecular orientational memory epitaxially nucleated from a Frank-Kasper σ phase, Recommanded Product: 1-Bromododecane, the publication is Giant (2022), 100084, database is CAplus.

Programming living and soft complex matter via primary structure and self-organization represents the key methodol. employed to design functions in biol. and synthetic nanoscience. Memory effects have been used to create com. technologies including liquid crystal displays and biomedical applications based on shape memory polymers. Supramol. orientational memory (SOM), induced by an epitaxial nucleation mediated by the close contact spheres of cubic phases, emerged as a pathway to engineer complex nanoscale soft matter of helical columnar hexagonal arrays. SOM preserves the crystallog. directions of close contact supramol. spheres from the 3D phase upon cooling to the columnar hexagonal periodic array. Despite the diversity of 3D periodic and quasiperiodic nanoarrays of supramol. dendrimers, including Frank-Kasper and quasicrystal, all examples of SOM to date were mediated by Im3m (body-centered cubic, BCC) and Pm3n (Frank-Kasper A15) cubic phases. Expanding the scope of SOM to non-cubic arrays is expected to generate addnl. morphologies that were not yet available by any other methods. Here we demonstrate the SOM of a dendronized triphenylene that self-organizes into helical columnar hexagonal and tetragonal P4₂/mnm (Frank-Kasper σ) phases. Structural anal. of oriented fibers by X-ray diffraction reveals that helical columnar hexagonal domains self-organize an unusual rectangular bipyramidal morphol. upon cooling from the σ phase. The discovery of SOM in a non-cubic Frank-Kasper phase indicates that this methodol. may be expanded to other periodic and quasiperiodic nanoarrays organized from self-assembling dendrimers and, most probably, to other soft and living complex matter.

Giant published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Recommanded Product: 1-Bromododecane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Fu, Wen published the artcileSynthesis of polymerizable quaternary thiazole salts and their application as antibacterial agents for dental resin, Name: 1-Bromododecane, the publication is Journal of the Mechanical Behavior of Biomedical Materials (2022), 105183, database is CAplus and MEDLINE.

For the purpose of endowing dental resin with antibacterial activity without impairing physicochem. properties, polymerizable quaternarized thiazole salts (QAMEMT-x) with different alkyl chain length (12, 14, and 16) were synthesized and characterized by FT-IR and ¹H-NMR spectra. After adding 5 wt% of QAMEMT-x into Bis-GMA/TEGDMA (50/50, weight/weight) dental resin, double bond conversion (DC), volumetric shrinkage (VS), flexural strength (FS) and modulus (FM), water sorption (WS) and solubility (SL), and antibacterial activity against Streptococcus mutans (S. mutans) of obtained resin systems were investigated. The results showed that 5 wt% of QAMEMT-x had no influence on DC, FS, FM, WS, and SL (α > 0.05), while could reduce VS of dental resin (α < 0.05). Cured resins with 5 wt% of QAMEMT-x all showed antibacterial activity against S. mutans, and QAMEMT-16 could endow cured resin with the strongest antibacterial activity which showed an antibacterial efficiency of more than 99%.

Journal of the Mechanical Behavior of Biomedical Materials published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C12H25Br, Name: 1-Bromododecane.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary