Tag: 300-400

pH Dependent Self-Assembly of Single-Pyrene-Armed Calix[4]arene: Modulation and Complexation with p-Sulfonatocalix[6]arene was written by Kalyani, Vrashali S.;Gawhale, Sharadchandra T.;Rathod, Nilesh V.;Singh, Prabhat K.;Malkhede, Dipalee D.. And the article was included in ChemistrySelect in 2019.Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone The following contents are mentioned in the article:

The photophys. behavior of a single pyrene substituted calix[4]arene derivative (MPCX4) has been investigated, as a function of pH, using steady state fluorescence and time-resolved emission spectroscopic techniques. An interesting dimer emission band has been observed exclusively in the alk. solution (pH > 8) which has been attributed to the hydrophobic and stacking interaction between the pyrene moieties of the adjacent MPCX4 mol. The self-assembled MPCX4 is disrupted by the introduction of another calixarene based host, p-sulfonatocalix[6]arene (SCX6), which eventually leads to the 1:1 complex formation between MPCX4 and SCX6, which is further characterised by ¹H NMR, FT-IR and HR-MS techniques. This complexation between MPCX4 and SCX6 also leads to the modulation of the prototropic equilibrium of MPCX4. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Methylmethacrylate polymerization photoinitiated by 1-(bromoacetyl)pyrene was written by Daswal, Swati;Mishra, Anuradha. And the article was included in Journal of Applied Polymer Science in 2006.Application of 80480-15-5 The following contents are mentioned in the article:

The photopolymerization of methylmethacrylate induced by pyrene, 1-acetylpyrene (AP), and 1-(bromoacetyl)pyrene (BP) has been investigated. Under all conditions employed, pyrene was completely ineffective. Introduction of a carbonyl and a bromo group in pyrene enhanced the polymerization efficiencies. Efficiency of AP as photoinitiator was very low; however, BP was proved to be a good photoinitiator. The polymerization with BP follows first-order kinetics with respect to monomer conversion, with a shorter induction period as compared with that of AP. The value of the initiator exponent (0.5) and the linear dependence of reciprocal average d.p. on the square root of the initiator concentration suggest radical polymerization with bimol. termination. IR and NMR spectra showed the atactic nature of polymethylmethacrylate. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Application of 80480-15-5).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Application of 80480-15-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Fluorescence high-performance liquid chromatographic determination of bile acids and its application to fecal bile acids was written by Miyake, Mariko;Mura, Tetsuo;Yurino, Nobuo;Shinzawa, Takeshi;Ikawa, Shiro. And the article was included in Yonago Igaku Zasshi in 1986.Safety of 2-Bromo-1-(pyren-1-yl)ethanone The following contents are mentioned in the article:

Free bile acids were labeled with 1-bromoacetylpyrene in MeCN by using dicyclohexyl-18-crown-6-ether as catalyst. Fluorescent derivatives of bile acids were analyzed on a reversed-phase column (Shim-pack CLC-ODS), using MeCN-MeOH-H₂O as mobile phase. Fluorescence intensity was linear from 25 to 400 pmol for 5 common bile acids. Total fecal bile acid level was 9654 ± 3652 μg/g dry feces in healthy men and 9091 ± 4275 μg/g dry feces in healthy women. Major free bile acids in feces were deoxycholic acid (24.5%), β-lithocholic acid (10.3%), lithocholic acid (10.2%), 3β,12α-dihydroxycholanoic acid (7.4%), chenodeoxycholic acid (6.9%), 3α,12β-dihydroxycholanoic acid (6.7%), 12α-hydroxy-3-ketocholanoic acid (5.5%), 3-ketocholanoic acid (4.5%), 3α,7α-dihydroxy-12-ketocholanoic acid (4.4%), and cholic acid (3.7%). This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Safety of 2-Bromo-1-(pyren-1-yl)ethanone).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Safety of 2-Bromo-1-(pyren-1-yl)ethanone

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Single-Chain Folding Nanoparticles as Carbon Nanotube Catchers was written by Bilgi, Mesut;Karaca Balta, Demet;Temel, Binnur Aydogan;Temel, Gokhan. And the article was included in Journal of Polymer Science, Part A: Polymer Chemistry in 2018.Computed Properties of C18H11BrO The following contents are mentioned in the article:

This contribution describes a simple method for preparing polymeric nanoparticles using photodimerization of anthracene moieties on the side chain of terpolymers in dilute regime and transformation of obtained polymeric nanoparticles into pyrene functional nanoparticles via Menschutkin quaternization procedure. Subsequently, pyrene possessing polymeric nanoparticles are attached onto multiwalled carbon nanotube (MWCNT) surfaces by π-π stacking strategy. Gel permeation chromatog., thermal gravimetric anal., UV-visible, and fluorescence spectroscopies are used to analyze modified nanoparticles and their precursors. Electron microscopy and dispersion studies show that pyrene-modified polymeric nanoparticles are able to interconnect various CNTs. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Computed Properties of C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Computed Properties of C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Probing solution behaviour of metallosupramolecular complexes using pyrene fluorescence was written by Cox, Nicola M.;Harding, Lindsay P.;Jones, Jennifer E.;Pope, Simon J. A.;Rice, Craig R.;Adams, Harry. And the article was included in Dalton Transactions in 2012.Synthetic Route of C18H11BrO The following contents are mentioned in the article:

A new method for assessing the topol. of metallosupramol. assemblies using pyrene-appended ligands is reported. Two potentially tetradentate ligands containing one (L¹ = I) and two (L² = II) terminal pyrene moieties were synthesized and their complexes with Cu⁺ and Cd²⁺ were characterized. Photophys. measurements demonstrate that in [Cu₂(L¹)₂]²⁺, [CdL¹]²⁺ and [Cu₂(L²)₂]²⁺ the emission spectra are dominated by monomeric emission but in the cadmium complex of L² (the pyrene units are in close proximity) a quenching of the luminescence coupled with weak emission at 540 nm is indicative of excimer formation. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Synthetic Route of C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Synthetic Route of C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Improvement of chemical analysis of antibiotics. IV. Fluorodensitometric determination of polyether antibiotics was written by Asukabe, H.;Sasaki, T.;Harada, K. I.;Suzuki, M.;Oka, H.. And the article was included in Journal of Chromatography in 1984.Computed Properties of C18H11BrO The following contents are mentioned in the article:

A fluorodensitometric determination of the polyether antibiotics, salinomycin  [53003-10-4] and monensin  [17090-79-8], on silica gel thin-layer plates based on fluorescence labeling of carboxylate with 1-bromoacetylpyrene  [80480-15-5] was established. The optimum conditions for producing salinomycin 1-pyrenacyl ester are described. Using Kryptofix 222  [23978-09-8] as a catalyst, the reaction fluorescence yield is significantly higher than that using dicyclohexyl-18-crown-6  [16069-36-6]. There is a linear relationship between the fluorescence intensity and the amount of salinomycin and monensin between 2 and 14 ng and the detection limits are 100 pg. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Computed Properties of C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Computed Properties of C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li⁺ selective podand-type fluoroionophore based on a diphenyl sulfoxide derivative bearing two pyrene groups was written by Nishimura, Yukihiro;Takemura, Tetsuo;Arai, Sadao. And the article was included in Molecules in 2011.Electric Literature of C18H11BrO The following contents are mentioned in the article:

Podand-type fluoroionophores having two pyrene moieties, bis(pyrenylacetyloxy)diphenyl sulfide 1,1′-[thiobis(2,1-phenyleneoxy)]bis[1-(1-pyrenyl)ethanone], bis(pyrenylacetyloxy)diphenyl sulfoxide 1,1′-[(sulfinyl)bis(2,1-phenyleneoxy)]bis[1-(1-pyrenyl)ethanone] and bis(1-pyrenylacetyloxy)diphenyl sulfone 1,1′-[(sulfonyl)bis(2,1-phenyleneoxy)]bis[1-(1-pyrenyl)ethanone] were designed and the synthesis of the target compounds was achieved by by connecting two 1-pyrenecarbonylmethyl groups with hydroxy groups of 2,2′-dihydroxydiphenyl sulfide, sulfoxide and sulfone, resp. Their complexation behavior toward alkali metal ions was examined by fluorescence spectroscopy. Among these fluoroionophores the product with a sulfinyl group, showed high selectivity toward lithium ion (Li⁺). This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Electric Literature of C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Electric Literature of C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Efficient non-doped deep-blue electroluminescence devices based on unsymmetrical and highly twisted pyrene derivatives was written by Wang, Zhiqiang;Zheng, Caijun;Fu, Weijun;Xu, Chen;Wu, Jiasheng;Ji, Baoming. And the article was included in New Journal of Chemistry in 2017.Application of 1890136-54-5 The following contents are mentioned in the article:

Two novel pyrene derivatives 1-3,5-diphenylphenyl-6-[2-(3,5-diphenylphenyl)phenyl]pyrene (PyPP) and 1-3,5-diphenylphenyl-6-[2-(9-phenyl-9H-carbazol-3-yl)phenyl]pyrene (PyPC) were successfully synthesized and characterized. Both these compounds exhibit unsym. and highly twisted structures, and show efficient deep-blue emissions and high thermal stabilities. The nondoped electroluminescence devices based on PyPP and PyPC exhibit stable and efficient deep-blue emissions with high color purity. The Commission Internationale de l’Eclairage (CIE) coordinate and maximum external quantum efficiency (EQE) of the device based on PyPP are (0.16, 0.07) and 2.99%, resp. The device based on PyPC achieved a maximum EQE of 3.72% and a CIE coordinate of (0.16, 0.09). This study involved multiple reactions and reactants, such as 2-Bromo-5′-phenyl-1,1′:3′,1”-terphenyl (cas: 1890136-54-5Application of 1890136-54-5).

2-Bromo-5′-phenyl-1,1′:3′,1”-terphenyl (cas: 1890136-54-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Application of 1890136-54-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quantification of surface functionalities on graphene, boron nitride and boroncarbonitride by fluorescent labeling was written by Barua, Manaswee;Sreedhara, M. B.;Pramoda, K.;Rao, C. N. R.. And the article was included in Chemical Physics Letters in 2017.HPLC of Formula: 80480-15-5 The following contents are mentioned in the article:

Considering the important role played by surface functionalities, we have obtained quant. estimates of the functionalities on graphene, BN and borocarbonitrides, by employing fluorescence labeling. Thus, the surface concentrations of carbonyl, carboxylic and hydroxyl groups on the graphene surface are 2.31 × 10²⁰, 28.17 × 10²⁰ and 0.08 × 10²⁰ per g resp. We do not observe carbonyl groups on reduced graphene oxide. The surface concentration of the amine group on BN is 0.01 × 10²⁰ per g. Borocarbonitrides contain amine and oxygen functionalities, with composition dependent concentrations Supercapacitor performance and ORR activity of the borocarbonitrides are presented along with their surface areas. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5HPLC of Formula: 80480-15-5).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. HPLC of Formula: 80480-15-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

N-Alkoxy-3,5-dinitro-4-aminobenzoic acid derivatives with controlled physico-chemical properties was written by Tudose, Madalina;Badea, Florin D.;Ionita, Gabriela;Maganu, Maria;Caproiu, Miron T.;Ionita, Petre;Constantinescu, Titus;Balaban, Alexandru T.. And the article was included in Structural Chemistry in 2010.HPLC of Formula: 80480-15-5 The following contents are mentioned in the article:

Starting from 4-chloro-3,5-dinitrobenzoic acid 1, compounds (N-alkoxy-3,5-dinitro-4-aminobenzoic acid esters where alkoxy stands for methoxy, carboxymethoxy, triphenylmethoxy, or corresponding amides) have been obtained, from which some are new, and for the known compounds 4-methoxyamino-3,5-dinitrobenzoic acid 2 and 4-chloro-3,5-dinitrobenzoyl chloride 6, the synthetic procedure has been improved. The new derivatives have been characterized by appropriate means (IR, UV-vis, ¹H-, and ¹³C-NMR, fluorescence) and their properties were studied. Thus, depending on their structure, the compounds have acid properties, fluorescence and complexing properties with alk. cations. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5HPLC of Formula: 80480-15-5).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.HPLC of Formula: 80480-15-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary