Showing 1-30 of 62 results for "10916"
Giuliano Alagona et al.
Physical chemistry chemical physics : PCCP, 12(35), 10173-10188 (2010-08-03)
The catalytic effect of explicit water molecules on the keto-enol tautomerism in a system of biological interest (enolpyruvate) has been investigated at the B3LYP/6-31++G** level by exploring the potential energy surface in the presence of 1 or 2 water molecules...
Nitrogen- sensitized Dual Phase Titanate/Titania for Visible-light Driven Phenol Degradation.
Hua CY, et al.
Journal of Solid State Chemistry, 1962012, 518-527 null
Kui Cheng et al.
Scientific reports, 5, 13354-13354 (2015-08-27)
In this work, the behavior of protein molecules adsorbed on TiO2 nanodots films are modulated through the light responses of the nanodots. TiO2 nanodots films are first prepared through phase separation induced self assembly. Then, bovine serum albumin (BSA) is...
Kui Cheng et al.
Colloids and surfaces. B, Biointerfaces, 126, 387-393 (2014-12-17)
Design of an implant surface with appropriate nanostructures has been considered to be an effective way to promote osteoblast cell growth and osseointegration. In this work, TiO2 nanorods were integrated into TiO2 nanodot films by hydrothermal growth to engineer a...
Alberto Massarotti et al.
ChemMedChem, 9(11), 2497-2508 (2014-08-01)
Over the last decade, 1,2,3-triazoles have received increasing attention in medicinal chemistry thanks to the discovery of the highly useful and widely applicable 1,3-dipolar cycloaddition reaction between azides and alkynes (click chemistry) catalyzed by copper salts and ruthenium complexes. After...
Ivelina Georgieva et al.
Journal of molecular modeling, 18(6), 2409-2422 (2011-10-13)
Theoretical and spectroscopic studies of a series of monomeric and dimeric complexes formed through the modification of a zirconium butoxide precursor with acetylacetone and subsequent hydrolysis and/or condensation have been performed by applying DFT/B3LYP/6-31++G(d) and highly accurate RI-ADC(2) methods as...
Magdalena Barwiolek et al.
Dalton transactions (Cambridge, England : 2003), 43(26), 9924-9933 (2014-05-23)
Cu(ii) complexes with Schiff bases derived from 2-pyridin-2-ylethanamine were obtained and characterized by UV-Vis, fluorescence, and IR spectra. The X-ray crystal structures determined for [Cu(ii)(epy(di-t-Buba))Cl] × 0.042H2O and [Cu(ii)(epy(di-t-Buba))O2CCH3] revealed tetrahedral distortion of the Cu(ii) coordination sphere in the solid...
D P Singh et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 78(2), 629-634 (2011-01-07)
A series of macrocyclic complexes of the type [M(C12H20N8S2)X2]; where M=Co(II), Ni(II), Cu(II), Zn(II); X=Cl-, NO3-, CH3COO- has been synthesized by template condensation of thiocarbohydrazide and pentane-2,4-dione in the presence of divalent metal salts in methanolic medium. The complexes have...
Heaweon Park et al.
Inorganic chemistry, 51(19), 10279-10289 (2012-09-15)
Acetylacetone dioxygenase (Dke1) is a bacterial enzyme that catalyzes the dioxygen-dependent degradation of β-dicarbonyl compounds. The Dke1 active site contains a nonheme monoiron(II) center facially ligated by three histidine residues (the 3His triad); coordination of the substrate in a bidentate...
Haymo Pircher et al.
The Journal of biological chemistry, 286(42), 36500-36508 (2011-09-01)
The human fumarylacetoacetate hydrolase (FAH) domain-containing protein 1 (FAHD1) is part of the FAH protein superfamily, but its enzymatic function is unknown. In the quest for a putative enzymatic function of FAHD1, we found that FAHD1 exhibits acylpyruvase activity, demonstrated...
Nataliya Butenko et al.
Journal of inorganic biochemistry, 147, 165-176 (2015-05-12)
The nuclease activity of VO(acac)2 (1, acac = acetylacetone) and its derivatives VO(hd)2 (2, hd = 3,5-heptanedione), VO(Cl-acac)2 (3, Cl-acac = 3-chloro-2,4-pentanedione), VO(Et-acac)2 (4, Et-acac = 3-ethyl-2,4-pentanedione) and VO(Me-acac)2 (5, Me-acac = 3-methyl-2,4-pentanedione), is studied by agarose gel electrophoresis, UV-visible...
Sara Panseri et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 976-977, 91-95 (2014-12-17)
A rapid, specific and simple procedure is proposed for the determination of free malonaldehyde (MA) contained in fish tissue. The method is the optimization of the reaction of MA with 2,3-diaminonaphthalene to afford a naphtodiazepinium ion that present a UV...
Yafeng Zhuang et al.
Journal of fluorescence, 23(1), 1-5 (2012-08-25)
A novel fluorescence method for the determination of etimicin is described. Etimicin reacts with acetylacetone and formaldehyde in pH 4.0 Britton-Robinson (B.R.) buffer solution to from a fluorescent substance [I]. Emission spectra of [I] and the reagent blank were overlapped...
Ersin Kılınç et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 28(4), 455-460 (2011-02-22)
The concentrations of beryllium (Be) in natural and flavored mineral water samples were determined by flame atomic absorption spectrophotometer (FAAS) after pre-concentration based on the complexation of Be(+2) with a mixture of acetylacetone (pentane-2,4-dione) plus morin (3,5,7,2',4'-pentaoxyflavone) and adsorption on...
Mohamed Abdel-Tawab Korany et al.
Journal of chromatographic science, 52(8), 837-847 (2013-09-06)
A novel high performance liquid chromatographic (HPLC) method with a pre-column derivatization reaction has been developed and validated. The method was used for the determination of the aminoglycoside antibiotic amikacin sulphate (AMK) in the presence of its synthetic precursor kanamycin...
Omar Abdel-Aziz et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 140, 229-240 (2015-01-24)
Simple, selective and reproducible spectrofluorimetric and spectrophotometric methods have been developed for the determination of vildagliptin and saxagliptin in bulk and their pharmaceutical dosage forms. The first proposed spectrofluorimetric method is based on the dansylation reaction of the amino group...
Johannes Kreutzer et al.
European journal of inorganic chemistry, 2015(17), 2889-2894 (2015-08-25)
Reaction of [Ti
A Z El-Sonbati et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 99, 353-360 (2012-10-06)
A novel method to synthesize some mononuclear ternary palladium(II) complexes of the general formula [Pd(L(n))L] (where LH=diketone=acetylacetone, HL(n)=azorhodanine) has been synthesize. The structure of the new mononuclear ternary palladium(II) complexes was characterized using elemental analysis, spectral (electronic, infrared and (1)H...
Khosro Mohammadi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 97, 711-716 (2012-08-14)
A series of new VO(IV) complexes with two new tetradentate Schiff base of 4,4'-(2,2-dimethylpropane-1,3-diyl)-bis(azan-1-yl-1-yldene)dipent-2-en-2-ol) [H(2)L(1)] and 3,3'-(2,2-dimethylpropane-1,3-diyl)azan-1-yl-1-ylidene)-bis(1-phenylbut-1-en-1-ol) [H(2)L(2)] (which have been derived from 2,2-dimethyl-1,3-diaminopropan, and diketones of acetylacetone and benzoylacetone) were synthesized and characterized by (1)H NMR, (13)C NMR, FT-IR...
Daryl L Howard et al.
The journal of physical chemistry. A, 119(29), 7980-7990 (2015-04-22)
The infrared and near-infrared spectra of acetylacetone, acetylacetone-d8, and hexafluoroacetylacetone are characterized from experiment and computations at different levels. In the fundamental region, the intramolecular hydrogen bonded OH-stretching transition is clearly observed as a very broad band with substantial structure...
Fei Xu et al.
FEMS microbiology letters, 358(1), 98-105 (2014-07-24)
This study investigated inactivation of bacteria with ultraviolet light A irradiation in combination with vitamin K3 as a photosensitizer. Six bacteria including Bacillus cereus, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, Klebsiella pneumoniae, and Escherichia coli suspended in vitamin K3 aqueous...
Meng-Liu Yu et al.
BioMed research international, 2015, 582359-582359 (2015-09-30)
Cell sheet technology is a new strategy in tissue engineering which could be possible to implant into the body without a scaffold. In order to get an integrated cell sheet, a light-induced method via UV365 is used for cell sheet...
Canan Ekinci Dogan et al.
Food additives & contaminants. Part B, Surveillance, 8(3), 221-226 (2015-06-23)
Migration of formaldehyde to aqueous extracts from paper and cardboard food packaging materials was determined by an ultraviolet visible-spectrophotometric method at 410 nm. Intraday and interday precision of the method, expressed as coefficient of variation, varied between 1.5 to 4.4%...
Robert M Edkins et al.
Dalton transactions (Cambridge, England : 2003), 40(38), 9672-9678 (2011-07-08)
Herein we report the synthesis and photophysical study of tris-heteroleptic complexes of the general formula IrLL'(acac), where L and L' are two differently substituted 2-phenylpyridines (ppyH) and acacH is 2,4-pentanedione, using a combinatorial approach that could be employed for many...
Yi Hong et al.
Colloids and surfaces. B, Biointerfaces, 123, 68-74 (2014-09-13)
In this study, we investigated the differences between amorphous and anatase TiO2 at the biomolecular level which could explain differences in the osteoblast response on these surfaces. The number of surface hydroxyl groups in the TiOHT form on amorphous and...
Antonio Aronne et al.
Environmental science & technology, 46(3), 1755-1763 (2011-12-24)
A class II hybrid sol-gel material was prepared starting from zirconium(IV) propoxide and 2,4-pentanedione and its catalytic activity in the removal of the herbicide 4-chloro-2-methylphenoxyacetic acid (MCPA) was revealed. The thermal and structural characterization, performed by thermogravimetry, differential thermal analysis...
Growth and characterization of thin films of Y203, La203 and La2CuO4.
Gao YM, et al.
Journal of Solid State Chemistry, 90(2), 228-233 (1991)
Marcelo B Lima et al.
Talanta, 89, 21-26 (2012-01-31)
An automatic method, based on flow-batch (FB), for determining glycerol in biodiesel was developed. The FB systems draw upon the useful features of flow, batch and multi-commutation approaches. The standards and samples preparation, as well as, derivatization and analysis were...
Rolando R Lozada-García et al.
Physical chemistry chemical physics : PCCP, 14(10), 3450-3459 (2012-02-07)
The photochemistry of the chelated enol form of acetylacetone (AcAc) was investigated by UV excitation of the S(2) state at 266 nm in parahydrogen matrices, complemented by experiments in neon and normal hydrogen matrices. Infrared (IR) spectroscopy, combined with theoretical...
Jacobus J van Franeker et al.
Nature communications, 6, 6229-6229 (2015-02-07)
The photoactive layer of organic solar cells consists of a nanoscale blend of electron-donating and electron-accepting organic semiconductors. Controlling the degree of phase separation between these components is crucial to reach efficient solar cells. In solution-processed polymer-fullerene solar cells, small...

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

MilliporeSigma

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.