Tag: M.W=200-350

Lindner, Sindy published the artcileAzide-Modified Membrane Lipids: Synthesis, Properties, and Reactivity, Related Products of bromides-buliding-blocks, the main research area is azide modified membrane lipid preparation property reactivity; azidolipid preparation property reactivity.

In the present work, we describe the synthesis and the temperature-dependent behavior of photoreactive membrane lipids as well as their capability to study peptide-lipid interactions. The modified phospholipids contained an azide group either in the middle part or at the end of an alkyl chain and also differed in the linkage (ester vs. ether) of the 2nd alkyl chain. The temperature-dependent aggregation behavior of the azidolipids was studied using differential scanning calorimetry (DSC), FTIR spectroscopy, and SAXS. Aggregate structures were visualized by stain and cryo-transmission electron microscopy (TEM) and were further characterized by dynamic light scattering (DLS). We showed that the position of the azide group and the type of linkage of the alkyl chain at the sn-2 position of the glycerol influenced the type of aggregates formed as well as their long-term stability: azidolipids P10AzSPC and r12AzSHPC showed the formation of extrudable liposomes, which were stable in size during storage. In contrast, azidolipids that carry a terminal azido moiety either formed extrudable liposomes, which showed time-dependent vesicle fusion (P15AzPdPC), or self-assembled in large sheet-like, non-extrudable aggregates (r15AzPdHPC) where the lipid mols. were arranged in an interdigitated orientation at temperatures below the Tm (LβI phase). Finally, a P10AzSPC:DMPC mixture was used for photochem.-induced crosslinking experiments with a transmembrane peptide (WAL-peptide) to demonstrate the applicability of the azidolipids for the anal. of peptide/lipid interactions. The efficiency of photocrosslinking was monitored by attenuated total reflection IR spectroscopy and mass spectrometry.

Langmuir published new progress about Liposomes. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Related Products of bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lartigue, Audrey published the artcileX-ray structure and ligand binding study of a moth chemosensory protein, Application In Synthesis of 56523-59-2, the main research area is crystal structure ligand moth chemosensory protein; Mamestra chemosensory protein conformation.

Chemosensory proteins (CSPs) are believed to be involved in chem. communication and perception. Such proteins, of Mr 13,000, have been isolated from several sensory organs of a wide range of insect species. Several CSPs have been identified in the antennae and proboscis of the moth Mamestra brassicae. One of them, CSPMbraA6, a 112-amino acid antennal protein, has been expressed in large quantities and is soluble in the Escherichia coli periplasm. X-ray structure determination has been performed in parallel with ligand binding assays using tryptophan fluorescence quenching. The protein has overall dimensions of 25 × 30 × 32 Å and exhibits a novel type of α-helical fold with six helixes connected by α-α loops. A narrow channel extends within the protein hydrophobic core. Fluorescence quenching with brominated alkyl alcs. or fatty acids and modeling studies indicates that CSPMbraA6 is able to bind such compounds with C12-18 alkyl chains. These ubiquitous proteins might have the role of extracting hydrophobic linear compounds (pheromones, odors, or fatty acids) dispersed in the phospholipid membrane and transporting them to their receptor.

Journal of Biological Chemistry published new progress about Crystal morphology. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Application In Synthesis of 56523-59-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

El-Shahawi, Manal Mohamed published the artcileSurface Active Properties and Biological Activities of Novel Anionic Surfactant Based on Oxapyridazinone Derivatives, Quality Control of 56523-59-2, the main research area is oxapyridazinone preparation anionic surfactant thermodn stability antibacterial antifungal.

A series of novel oxapyridazinone derivatives I (R = (CH2)12, (CH2)14, (CH2CH2O)6, (CH2CH2O)7) have been synthesized via cyclization of the corresponding sodium salt of α-sulfonated fatty acid hydrazides with chloroacetic acid in the presence of sodium acetate and acetic anhydride. The surface properties (surface tension, CMC value and area per mol.), the thermodn. stability and antimicrobial activities of the prepared compounds were determined and compared to standard trade material Texapone N-70. The prepared compounds exhibit surface activity comparable to the standard and thus can be used as anionic surfactants.

Journal of Surfactants and Detergents published new progress about Anionic surfactants. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Quality Control of 56523-59-2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Uchinomiya, Shohei published the artcileFluorescence detection of metabolic activity of the fatty acid beta oxidation pathway in living cells, Recommanded Product: 15-Bromopentadecanoic acid, the main research area is fluorescence metabolism activity fatty acid beta oxidation pathway.

Detection of metabolic activity in living cells facilitates the understanding of the cell mechanism. Here, the authors report a fluorescent probe that can detect fatty acid beta oxidation (FAO) in living cells. This probe is metabolically degraded by the sequential enzyme reactions of FAO and can visualize the FAO activity with turn-on fluorescence.

Chemical Communications (Cambridge, United Kingdom) published new progress about Fluorescence imaging. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Recommanded Product: 15-Bromopentadecanoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dubinina, Galyna G. published the artcilePhenylene Vinylene Platinum(II) Acetylides with Prodigious Two-Photon Absorption, Safety of 4-(Bromomethyl)-N,N-diphenylaniline, the main research area is platinum acetylide phenylenevinylene chromophore two photon absorption NLO property; crystal structure dinuclear platinum acetylide phenylenevinylene chromophore preparation; mol structure dinuclear platinum acetylide phenylenevinylene chromophore.

The linear and nonlinear optical properties of linear and cross-conjugated Pt(II) acetylide complexes that contain extended p-(phenylenevinylene) chromophores are reported. The complexes exhibit very high femtosecond two-photon absorption (2PA) cross section values (σ2 up to 10,000 GM), as measured by nonlinear transmission (NLT) and two-photon excited fluorescence (2PEF) methods. The large 2PA cross sections span a broad range of wavelengths, 570-810 nm, and they overlap with the triplet excited state absorption. Spectral coincidence of high cross section 2PA and triplet absorption is a key feature giving rise to efficient dual-mode optical power limiting (OPL).

Journal of the American Chemical Society published new progress about Chromophores. 183994-94-7 belongs to class bromides-buliding-blocks, name is 4-(Bromomethyl)-N,N-diphenylaniline, and the molecular formula is C19H16BrN, Safety of 4-(Bromomethyl)-N,N-diphenylaniline.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cimatu, Katherine published the artcileSum Frequency Generation Imaging Microscopy of Patterned Self-Assembled Monolayers with Terminal -CH3, -OCH3, -CF2CF3, -C=C-, -Phenyl, and -Cyclopropyl Groups, Name: 15-Bromopentadecanoic acid, the main research area is methyl group SFG imaging microscopy patterned selfassembled monolayer; perfluoroethyl group SFG imaging microscopy patterned selfassembled monolayer; phenyl group SFG imaging microscopy patterned selfassembled monolayer; ethenediyl group SFG imaging microscopy patterned selfassembled monolayer; cyclopropyl group SFG imaging microscopy patterned selfassembled monolayer; methoxy group SFG imaging microscopy patterned selfassembled monolayer.

Vibrational spectroscopic imaging is demonstrated for a variety of organic monolayer-functionalized surfaces patterned using microcontact printing. The images from sum frequency generation imaging microscopy (SFGIM) are analyzed using different contrast mechanisms in the interpretation of the transition from stamped to backfilled regions of interest. For this experiment, microcontact printing is used to spatially control the surface monolayers by using a patterned stamp and by varying the terminal functional group of the backfilling solutions Anal. by the three different methods suggests that significant mixing occurs between the stamped and backfilled regions, which influence the contrast in the images at the resonant peaks. The interference between the resonant peaks and nonresonant background also has an effect on the appearance of the image.

Journal of Physical Chemistry C published new progress about Functional groups. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Name: 15-Bromopentadecanoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Xiao published the artcileMultistimuli-responsive hydrogels with both anisotropic mechanical performance and anisotropic luminescent behavior, Name: 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is multiresponsive hydrogel luminescent anisotropy mech property.

Anisotropic luminescence emission is the basis to achieve some key parameters in optoelectronic fields. As compared with mech. anisotropy, however, achieving anisotropic emitting behavior is still challenging. Thus, integrating multiple stimuli into one luminescent hydrogel orthogonally while retaining its anisotropic structure remains an open challenge. Herein, we report the construction of a multistimuli-responsive mech./luminescent dual anisotropic hydrogel through the copolymerization of superparamagnetic nanoparticle-coated alumina (Fe/Al2O3) platelets, lanthanide complex, photochromic diarylethene mol., and N-isopropylacrylamide (NIPA) in an oriented magnetic field. The aligned Fe/Al2O3 platelets impart the hydrogel an anisotropic mech. property, and the orientation-dependent “”shading effect”” of the aligned Fe/Al2O3 platelets on the lanthanide complex also endow the hydrogel with anisotropic emission behavior. Significantly, photoreversible luminescence on/off switch and thermoreversible anisotropic deformation are realized in the hydrogel based on the conformation-dependent fluorescence resonance energy transfer between the lanthanide donor and photochromic diarylethene acceptor, and phase transition of polymerized NIPA, resp. As a proof-of-concept, multidimensional intelligent anticounterfeiting is demonstrated by using this hydrogel. Thus, this work demonstrates a general preparation strategy of multistimuli-responsive dual anisotropic hydrogels for purposely designed applications, offering insights in the field fundamentally and practically.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Anisotropic materials. 913836-27-8 belongs to class bromides-buliding-blocks, name is 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C14H20BBrO3, Name: 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary