Tag: M.W=200-250

Yousef, L. A. published the artcileUranium(VI) Adsorption Using a Mixture of 1-Amino-2-naphthol-4-sulfonic Acid and Bentonite: Kinetic and Equilibrium Studies, Quality Control of 116-63-2, the publication is Radiochemistry (Moscow, Russian Federation) (2020), 62(4), 511-523, database is CAplus.

Abstract: Uranium was adsorbed using bentonite treated with 1-amino-2-naphthol-4-sulfonic acid (ANSA). The prepared Bt-(ANSA) was characterized, and its adsorption affinity for uranium(VI) was evaluated. The influence exerted on the uranium adsorption by pH, contact time, adsorbent dose, initial uranium concentration, interfering ions, and temperature was studied. The optimum conditions are pH 8.5, 0.04 g of Bt-(ANSA) per 10 mL of 400 mg/L uranium solution, and 20-min contact at room temperature The majority of cations except Th, Fe, Cu, and Ni do not interfere with the uranium adsorption. The adsorption kinetics and equilibrium were studied. The application of the Langmuir model showed that the maximum sorption capacity reached 90.9 mg/g at room temperature The adsorption process was found to follow a pseudo-second order kinetic model at 400 mg/L uranium concentration Evaluation of thermodn. parameters (ΔG°, ΔH°, and ΔS°) shows that the adsorption is spontaneous exothermic accompanied by a decrease in randomness. Uranium(VI) ions were efficiently desorbed using a 1 M HNO3 solution with the adsorbent regeneration. The optimum conditions were applied to sep. uranium from carbonate leach liquor solution of a field sample from Abu Hamatta area, SW Sinai, Egypt.

Radiochemistry (Moscow, Russian Federation) published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C9H9ClN2, Quality Control of 116-63-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Silveira, Eva Lucia Cardoso published the artcileMolecular absorption spectrophotometric method for the determination of phosphorus in biodiesel, Synthetic Route of 116-63-2, the publication is Fuel (2011), 90(11), 3485-3488, database is CAplus.

A mol. absorption method is proposed for the determination of phosphorus in biodiesel. The samples are mineralized using an ashing procedure at 550° followed by dissolution of the residue. The anal. procedure is based on the formation of a blue molybdenum complex with phosphoric acid when 1-amino-2-naphthol-4-sulfonic acid was used as reducing agent. The method was applied to biodiesel samples prepared from soy, canola and sunflower oils and from bovine fat. The limit of detection is 0.57 mg/P/kg^-1 and the limit of quantification is 1.7 mg/P/kg^-1. The observed mean relative standard deviation is about 5%. The simplicity of the procedure added to its precision, accuracy and low cost suggest that it is an excellent option for the determination of phosphorus in biodiesel.

Fuel published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H16Br3N, Synthetic Route of 116-63-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Haque, T. M. A. published the artcileSynthesis, characterization and antibacterial activity of Zn(II) and Cd(II) Schiff base complexes with monovalent bidentate ligand, COA of Formula: C10H9NO4S, the publication is Asian Journal of Biochemical and Pharmaceutical Research (2016), 6(2), 63-70, database is CAplus.

A new Schiff base, N (4-dimethylamino benzylidene) amino-2-naphthol-4-sulfonic acid has been synthesized from 4-dimethylamino benzaldehyde and 1-amino-2-naphthol-4-sulfonic acid. Zn (II) and Cd(II) complexes of the above ligand was synthesized as well. The chem. structures of the Schiff-base ligand and its metal complexes were confirmed by IR, UV-VIS, 1H NMR, elemental anal., molar conductance and m.p. The anal. data of the complexes show the formation of 1:2 metal to ligand ratio with the formula [ML2], where M represents Zn(II) and Cd(II) ions, and L represents the Schiff base ligand resp., diamagnetic nature and a tetrahedral geometry around the metal ion. The results suggest that the Schiff base is a monovalent anion with bidentate ON donor atoms of the phenolic oxygen and the azomethine nitrogen atoms. The complexes were non-electrolytes in DMSO solvent (DMSO). Antibacterial activity of prepared Schiff′s base and its metal complexes were studied on gram pos. Staphylococcus aureus and gram neg. Escherichia coli. It was found that the Schiff′s bases under study were considered inhibitors for bacterial growth with variation extent.

Asian Journal of Biochemical and Pharmaceutical Research published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H9NO4S, COA of Formula: C10H9NO4S.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Guesmi, Ahlem published the artcileStudy of the colorimetric and photoluminescence properties of polyamide fiber, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is Oriental Journal of Chemistry (2017), 33(5), 2311-2317, database is CAplus.

This research work involves the synthesis, the characterization, and the dyeing application of some reactive dyes on the polyamide fibers. All the dyeing parameters have been studied, pH 4 was registered as the optimal pH value of dyeing polyamide fabrics with the synthesized dyes. The color depth as measured by the K/S value, the colorfastness to washing and light were also evaluated. Under UV exposure, intense emission of orange red was observed for dyed polyamide. Potential applications of this technol. include protective clothing, textile-based sensors, and smart tagging.

Oriental Journal of Chemistry published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H9NO4S, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Shahroosvand, Hashem published the artcileRed electroluminescence of ruthenium sensitizer functionalized by sulfonate anchoring groups, Application In Synthesis of 116-63-2, the publication is Dalton Transactions (2014), 43(24), 9202-9215, database is CAplus and MEDLINE.

Five novel Ru(II) phenanthroline complexes with an addnl. aryl sulfonate ligating substituent at the 5-position were synthesized: [Ru(L)(bpy)₂](BF₄)₂ (1), [Ru(L)(bpy)(SCN)₂] (2), [Ru(L)₃](BF₄)₂ (3), [Ru(L)₂(bpy)](BF₄)₂ (4) and [Ru(L)(BPhen)(SCN)₂] (5) (L = (6-one-[1,10]phenanthroline-5-ylamino)-3-hydroxynaphthalene-1-sulfonic acid, bpy = 2,2′-bipyridine, BPhen = 4,7-diphenyl-1,10-phenanthroline), as both photosensitizers for oxide semiconductor solar cells (DSSCs) and light emitting diodes (LEDs). The absorption and emission maxima of these complexes red shifted upon extending the conjugation of the phenanthroline ligand. Ru phenanthroline complexes exhibit broad metal to ligand charge transfer-centered electroluminescence (EL) with a maximum near 580 nm. A particular structure (2) can be considered as both DSSC and OLED devices. The efficiency of the LED performance can be tuned by using a range of ligands. Device (2) has a luminance of 550 cd m^-2 and maximum efficiency of 0.9 cd A^-1 at 18 V, which are the highest values among the 5 devices. The turn-on voltage of this device is ∼5 V. The role of auxiliary ligands in the photophys. properties of Ru complexes was studied by DFT calculation Photovoltaic properties were studied of dye-sensitized nanocrystalline semiconductor solar cells based on Ru phenanthroline complexes and an I redox electrolyte. A solar energy to electricity conversion efficiency (η) of 0.67% was obtained for Ru complex (2) under standard AM 1.5 irradiation with a short-circuit photocurrent d. (J_sc) of 2.46 mA cm^-2, an open-circuit photovoltage (V_oc) of 0.6 V, and a fill factor (ff) of 40%, which are all among the highest values for Ru sulfonated anchoring groups reported so far. Monochromatic incident photon to current conversion efficiency was 23% at 475 nm. Photovoltaic studies clearly indicated dyes with 2 SCN substituents yielded a higher J_sc for the cell than dyes with a tris-homoleptic anchor substituent.

Dalton Transactions published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C8H5IO, Application In Synthesis of 116-63-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

El-Tabl, Abdou Saad published the artcileSynthesis, characterization and antimicrobial activity of new binary metal complexes derived from amino sulfo-naphthalene ligand, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is Journal of Chemical, Biological and Physical Sciences (2015), 5(4), 3629-3644, database is CAplus.

New binary metal (II) complexes derived from amino sulfo-naphthalene ligand were prepared The ligand and the metal complexes were characterized from elemental anal., molar conductance, magnetic susceptibility, IR, electronic, ¹H-NMR, and mass spectral studies. Structural and spectroscopic properties revealed that the ligand adopted a tridentate fashion, while the metal complexes adopted a tetragonal distorted octahedral geometry around metal ions. All the complexes are nonelectrolytic in nature as suggested by molar conductance measurements. IR spectral data indicate the coordination between ligand and central metal ion through a phenolic OH, 1-imine N, one oxime-N atoms forming five-membered rings including the metal ions. The compounds were screened for their antimicrobial activities against Aspergillus funigatus, Streptococcs pneumoniae, Bacillis subtilis, Escherichia coli, Pseudomonas coli and candida albicans. Neither the ligand nor its metal complexes recorded antimicrobial activity against neither Pseudomonas coli nor Candida albicans. However, all compounds including the ligand showed high activity against Aspergillus funigatus, Streptococcs pneumoniae, Bacillis subtilis, and Escherichia coli.

Journal of Chemical, Biological and Physical Sciences published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H9NO4S, Recommanded Product: 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Hamidian, H. published the artcileSynthesis of new 1,3,4-thiadiazole derivatives containing of morpholine ring, Quality Control of 116-63-2, the publication is Asian Journal of Chemistry (2013), 25(1), 487-489, database is CAplus.

The synthesis of new of 1,3,4-thiadiazole derivatives containing of morpholine ring were investigated. In this study, the derivatives of naphthol, amine and phenol were reacted with morpholine-4-carbonyl chloride. Then, prepared solutions were added to diazotized 2-amino-5-mercapto-1,3,4-thiadiazole to give 2-amino-5-mercapto-1,3,4-thiadiazole products. These dyes were characterized by elemental anal. and spectral analyses (IR, ¹H NMR, ¹³C NMR and mass spectra).

Asian Journal of Chemistry published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H9NO4S, Quality Control of 116-63-2.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Hassan, Hassan M. A. published the artcileValidated spectrophotometric assessment of 1,4-dioxane in drinking water by amionhydroxynaphthlene sulfonic acid (AHSA), Application of 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, the publication is International Journal of Environmental Analytical Chemistry, database is CAplus.

A selective, facile, and highly efficient spectrophotometric approach was established for the determination of 1,4-dioxane in drinking water quant. This approach depends on the reaction selectively of 1,4-dioxane with 1-Amino-2-naphthol-4-sulfonic acid (AHSA) to give an instantly complex measured at 340 nm. The maximum spectra development with high intensity of dioxane-AHSA complex was obtained at 15 min. Variable parameters that affecting the dioxane-AHSA efficacy were estimated and optimized. Under optimal conditions, the dioxane-AHSA complex obeyed Beer′s law within the range of 0.5-15 mg/L of 1,4-dioxane with a regression factor of 0.996 (n = 5) and a detection limit of 16 μg/L. The results of precision and accuracy within-day were ≤2.0% in terms of relative standard deviation (RSD%), which confirmed the reproducibility of the anal. performance. The proposed method was applied successfully in the simultaneous assessment of 1,4-dioxane in an aqueous solution The accuracy and reliability of the developed approach recommended being applied in all quality control of water companies without the use of sophisticated instrumentation and procedure.

International Journal of Environmental Analytical Chemistry published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C10H9NO4S, Application of 4-Amino-3-hydroxynaphthalene-1-sulfonic acid.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Grisorio, Roberto published the artcileMonodispersed vs. polydispersed systems for bulk heterojunction solar cells: the case of dithienopyrrole/anthracene based materials, Recommanded Product: 9,10-Diethynylanthracene, the publication is Journal of Materials Chemistry (2012), 22(37), 19752-19760, database is CAplus.

The article reports on the properties of a new class of arylene-ethynylene semiconductors incorporating anthracene and the bridged bithiophene dithienopyrrole. Two monodispersed structures were synthesized: the first with a dithienopyrrole core bound to two anthracenyl-ethynyl side groups namely the 2,6-bis(anthracen-9-ylethynyl)-4-(2-ethylhexyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrole (ADA); in the second structure the anthracene core was functionalized with two dithienopyrrolylethynyl groups, obtaining 9,10-bis((4-(2-ethylhexyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrol-2-yl)ethynyl)anthracene (DAD). The properties of these materials were compared with those of the corresponding polymer poly[4-(2-ethylhexyl)-4H-dithieno[3,2-b:2′,3′-d]pyrrole-2,6-diylethynylene-anthracen-9,10-diylethynylene] (polyAD). Devices employing PC₆₁BM as an electron acceptor revealed that the monodispersed materials (ADA and DAD) were better performing than polyAD, seemingly due to the better homogeneity of the donor-acceptor blend, as revealed by at. force microscopy. The power conversion efficiency value (1.3%) obtained with DAD ranks among the highest reported for non-polymeric small mol.-based bulk heterojunction solar cells constructed without the use of additives or annealing processes, thus demonstrating that ethynylene-containing electron-rich systems are promising donors for organic solar cell applications.

Journal of Materials Chemistry published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C18H10, Recommanded Product: 9,10-Diethynylanthracene.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem

Khan, Muhammad S. published the artcileSynthesis, characterization and optical spectroscopy of platinum(II) di-ynes and poly-ynes incorporating condensed aromatic spacers in the backbone, Synthetic Route of 18512-55-5, the publication is Dalton Transactions (2004), 2377-2385, database is CAplus and MEDLINE.

Protected and terminal dialkynes with extended π-conjugation through a condensed aromatic linker unit in the backbone, 1,4-bis(trimethylsilylethynyl)naphthalene, 2a, 1,4-bis(ethynyl)naphthalene, 2b, 9,10-bis(trimethylsilylethynyl)anthracene 3a, 9,10-bis(ethynyl)anthracene 3b, were synthesized and characterized spectroscopically. The solid-state structures of 2a and 3a were confirmed by single crystal x-ray diffraction studies. Reaction of two equivalent of trans-[Ph(Et₃P)₂PtCl] with an equivalent of the terminal dialkynes 1,4-bis(ethynyl)benzene 1b and 2b–3b, in ⁱPr₂NH-CH₂Cl₂, in the presence of CuI, at room temperature, afforded the Pt(II) di-ynes trans-[Ph(Et₃P)₂Pt-CC-R-CC-Pt(PEt₃)₂Ph] (R = benzene-1,4-diyl 1c; naphthalene-1,4-diyl 2c and anthracene-9,10-diyl 3c) while reactions between equimolar quantities of trans-[(Bu₃P)₂PtCl₂] and 2b–3b under similar conditions readily afforded the Pt(II) poly-ynes trans-[-(Bu₃P)₂Pt-CC-R-CC-]_n (R = naphthalene-1,4-diyl 2d and anthracene-9,10-diyl 3d). The Pt(II) diynes and poly-ynes were characterized by anal. and spectroscopic methods, and the single crystal x-ray structures of 1c and 2c were determined These structures confirm the trans-square planar geometry at the Pt centers and the linear nature of the mols. The di-ynes and poly-ynes are soluble in organic solvents and readily cast into thin films. Optical spectroscopic measurements reveal that the electron-rich naphthalene and anthracene spacers create strong donor-acceptor interactions between the Pt(II) centers and conjugated ligands along the rigid backbone of the organometallic polymers. TG shows that the di-ynes possess a somewhat higher thermal stability than the corresponding poly-ynes. Both the Pt(II) di-ynes and the poly-ynes exhibit increasing thermal stability along spacers from phenylene through naphthalene to anthracene.

Dalton Transactions published new progress about 18512-55-5. 18512-55-5 belongs to naphthyridine, auxiliary class Alkynyl,Anthracene, name is 9,10-Diethynylanthracene, and the molecular formula is C18H10, Synthetic Route of 18512-55-5.

Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem