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Showing 1-30 of 31 results for "418293" within Papers
J-Q Shi et al.
Ecotoxicology and environmental safety, 78, 134-141 (2011-12-14)
The acute toxicity (-log EC(50)) to Photobacterium phosphoreum and the n-octanol/water partition coefficient (log K(ow)) of 31 kinds of substituted thiophenols were determined at 298.15K. The -log EC(50) values of studied chemicals are between 4.26 and 5.89. Their log K(ow)
Domenico Armenise et al.
Archiv der Pharmazie, 345(5), 407-416 (2011-12-08)
As part of our studies focused on the design and synthesis of new antimicrobial agents a series of 7-fluoro-3,4-dihydro-2H-1,4-benzothiazine derivatives (4a-4f, 4h) and 7-fluoro-2H-1,4-benzothiazin-3(4H)-one analogues (4j-4o) were synthesized and evaluated for their in vitro inhibitory activity against a representative panel
Zheng Wang et al.
Analytical chemistry, 84(11), 4915-4920 (2012-04-28)
The development of highly sensitive and selective detection techniques for the discrimination of relevant toxic benzenethiols and biologically active aliphatic thiols is of considerable importance in the fields of chemical, biological, and environmental sciences. In this article, we describe a
Thomas A A Oliver et al.
The journal of physical chemistry. A, 116(51), 12444-12459 (2012-11-01)
H (Rydberg) atom photofragment translation spectroscopy and high-level ab initio electronic structure calculations are used to explore the photodissociation dynamics of three para-substituted thiophenols (p-YPhSH; Y = CH(3), F, and MeO). UV excitation in the wavelength range 305 > λ(phot)
M Asadollahi-Baboli
Environmental toxicology and pharmacology, 34(3), 826-831 (2012-10-17)
There is an increasing need for the rapid safety assessment of chemicals by both industries and regulatory agencies throughout the world. In silico techniques are practical alternatives in the environmental hazard assessment. In this background, quantitative structure-toxicity relationship (QSTR) analysis
Jacob Schneider et al.
Inorganic chemistry, 48(4), 1498-1506 (2009-01-15)
Three new cyclometalated 6-phenyl-4-(p-R-phenyl)-2,2'-bipyridyl (C--N--N) Pt(II) thiophenolate complexes (R = Me (2a), COOMe (2b), and P(O)(OEt)(2) (2c)) have been synthesized and studied. The new C--N--N ligands L2 (R = COOMe) and L3 (R = P(O)(OEt)(2)) undergo cyclometalation with a Pt(II)
Xiu-Ling Liu et al.
Chemistry, an Asian journal, 7(11), 2696-2702 (2012-09-13)
A new type of fluorescent probes for thiophenols, 6HQM-DNP and 7HQM-DNP, containing 6- or 7-hydroxy quinonlinium as fluorophore and 2,4-dinitrophenoxy (DNP) as nucleophilic recognition unit were constructed. As ethers, these non-fluorescent probe molecules can release the corresponding fluorescent quinolinium (6HQM
Xuefang Gu et al.
Analytical and bioanalytical chemistry, 406(7), 1885-1894 (2014-03-01)
A simple and sensitive method, based on surface-enhanced Raman scattering (SERS), for immunoassay and label-free protein detection is reported. A series of bowl-shaped silver cavity arrays were fabricated by electrodeposition using a self-assembled polystyrene spheres template. The reflection spectra of
Panumart Thongyoo et al.
Organic & biomolecular chemistry, 6(8), 1462-1470 (2008-04-04)
The naturally-occurring cyclic cystine-knot microprotein trypsin inhibitors MCoTI-I and MCoTI-II have been synthesised using both thia-zip native chemical ligation and a biomimetic strategy featuring chemoenzymatic cyclisation by an immobilised protease. Engineered analogues have been produced containing a range of substitutions
Yi-Ge Zhou et al.
Chemical communications (Cambridge, England), 48(19), 2510-2512 (2012-01-27)
The use of particle-impact coulometry in identifying and quantifying nanoparticles tagged (or labelled) with electroactive molecules is demonstrated via the detection of 1,4-nitrothiophenol-tagged silver nanoparticles in aqueous dispersion at potentials more negative than -0.17 V (vs. Ag/AgCl, the reduction potential
The synthesis and structural characterization of [Et4N]2 [Ti(SPh)6] and trimeric [Ti3O(SPh)3Cl4 (CH3 CN)5]?CH3 CN?(C2 H5)2O complexes.
Kim JT, et al.
Polyhedron, 19(9), 1139-1143 (2000)
R B Nasir Baig et al.
Chemical communications (Cambridge, England), 48(20), 2582-2584 (2012-02-02)
Diaryl sulfides were synthesized using a magnetically recoverable heterogeneous Cu catalyst via one-pot multi component reaction using MW irradiation; the use of isopropanol as a benign reaction medium, easy recovery of the catalyst using an external magnet, efficient recycling, and
Yuka Ogata et al.
Environmental science & technology, 47(2), 1017-1023 (2012-12-12)
Recently, we showed that Sphingobium fuliginis OMI utilizes 4-tert-butylphenol as a sole carbon and energy source via phenolic ring hydroxylation followed by a meta-cleavage pathway, and that this strain can degrade various alkylphenols. Here, we showed that strain OMI effectively
Mohammad Reza Nabid et al.
Journal of hazardous materials, 203-204, 93-100 (2011-12-31)
A new method which utilizes a multiwalled carbon nanotubes/poly(2-amino thiophenol) nanocomposites as an effective sorbents in solid-phase extraction has been developed for separation and preconcentration of Cd(II) and Pb(II) trace levels in environmental samples. The method is based on the
Takanori Fukusumi et al.
FEBS letters, 586(16), 2338-2341 (2012-06-05)
Chlorophyll-a (Chl-a) was readily converted into Chl-d under mild conditions without any enzymes. Treatment of Chl-a dissolved in dry tetrahydrofuran (THF) with thiophenol and acetic acid at room temperature successfully produced Chl-d in 31% yield. During the acidic oxidation, removal
Masaru Aoki et al.
Physical chemistry chemical physics : PCCP, 14(12), 4101-4108 (2012-02-18)
Valence electronic states of benzenethiol (C(6)H(5)SH) and benzeneselenol (C(6)H(5)SeH) in the gas, condensed, and chemisorbed phases were examined by ultraviolet photoemission spectroscopy, metastable atom electron spectroscopy, and first-principles calculations using density functional theory. C(6)H(5)SH is chemisorbed on Pt(111) and Au(111)
Justin L Abell et al.
The Analyst, 137(1), 73-76 (2011-11-03)
By generating a composition gradient on a highly uniform SERS substrate and applying independent component analysis, we demonstrate that one can extract the intrinsic SERS spectrum of individual components from SERS spectra obtained from a two-component mixture.
Run Zhang et al.
Bioconjugate chemistry, 23(4), 725-733 (2012-03-23)
Ruthenium(II) complexes have rich photophysical attributes, which enable novel design of responsive luminescence probes to selectively quantify biochemical analytes. In this work, we developed a systematic series of Ru(II)-bipyrindine complex derivatives, [Ru(bpy)(3-n)(DNP-bpy)(n)](PF(6))(2) (n = 1, 2, 3; bpy, 2,2'-bipyridine; DNP-bpy
Luis E Gonzalez-Ovalle et al.
Organic & biomolecular chemistry, 10(28), 5401-5409 (2012-06-21)
Density functional theory (DFT) calculations are presented on biomimetic model complexes of cysteine dioxygenase and focus on the effect of axial and equatorial ligand placement. Recent studies by one of us [Y. M. Badiei, M. A. Siegler and D. P.
A M Gabudean et al.
Nanotechnology, 23(48), 485706-485706 (2012-11-10)
Surface-enhanced Raman scattering (SERS) nano-tags are of increasing interest in biomedical research as viable alternatives to bio-imaging techniques based on semiconductor quantum dots or fluorescent molecules. In this work, we fabricate silica-coated gold nanorods (AuNRs) encoded with two molecular labels
Goutam Nandi et al.
Inorganic chemistry, 51(11), 6412-6420 (2012-05-25)
A new route is developed for the synthesis of molybdenum and tungsten porphyrins using [M(NO)(2)py(2)Cl(2)] (M = Mo, W) as the metal source and TPP (dianion of 5,10,15,20-meso-tetraphenylporphyrin) in the benzoic acid melt. Complexes [Mo(V)O(TPP)(OOCPh)] (1) and [W(V)O(TPP)(OOCPh)] (2) are
F P Cometto et al.
Langmuir : the ACS journal of surfaces and colloids, 28(38), 13624-13635 (2012-09-06)
The preparation and thermal stability of benzenethiol and benzeneselenol self-assembled monolayers (SAMs) grown on Au(111) have been investigated by electrochemical experiments and high-resolution photoemission spectroscopy. Both techniques confirm the formation of monolayers with high packing densities (θ = 0.27-0.29 ML)
Chuan Dai et al.
Chemical communications (Cambridge, England), 48(43), 5367-5369 (2012-04-25)
A ligand-free CuI-catalyzed cascade C-S and C-N cross coupling of (hetero)aryl ortho-dihalides and ortho-aminobenzenethiols has been developed, and various phenothiazines were synthesized with excellent regioselectivity. A possible mechanism is proposed for the cascade coupling.
Sasani Jayawardhana et al.
Optics letters, 37(11), 2142-2144 (2012-06-05)
Optical fibers allow a variety of spectroscopic sensing methods to be implemented in a single-ended backscattering geometry. Taking multimode fibers with surface-enhanced Raman scattering active tips as a model system, it is shown that the remote single-ended collection geometry can
Dnyaneshwar Kand et al.
The Analyst, 137(17), 3921-3924 (2012-07-04)
A BODIPY-based selective thiophenol probe capable of discriminating aliphatic thiols is reported. The fluorescence off-on effect upon reaction with thiol is elucidated with theoretical calculations. The sensing of thiophenol is associated with a color change from red to yellow and
S Mizyed et al.
Journal of the American Chemical Society, 123(51), 12770-12774 (2001-12-26)
1,3,5,7,9-Pentakis(4-methoxyphenylthio)corannulene (3), 1,3,5,7,9-pentakis(2-naphthylthio)corannulene (4), and 1,3,6,8-tetrakis(4-methoxyphenylthio)corannulene (5b) have been synthesized by chlorination of corannulene with ICl in CH(2)Cl(2) at 25 degrees C and subsequent nucleophilic aromatic substitution with the appropriate sodium thiophenolate in DMEU at 25 degrees C. (1)H NMR
Mohammad Ibrahim et al.
Molecular and cellular biochemistry, 371(1-2), 97-104 (2012-09-18)
Diorganoyl dichalcogenide compouds can have antioxidant activity in different in vitro and in vivo models. Here, we have compared the potential antioxidant activity of 1-dinaphthyl diselenide (1-NapSe)(2), 2-dinaphthyl diselenide (2-NapSe)(2), 1-dinaphthyl distelluride (1-NapTe)(2), 2-dinaphthyl ditelluride (2-NapTe)(2) with their well-studied analogs
Avelino Corma et al.
Nature chemistry, 5(9), 775-781 (2013-08-24)
The catalytic activity of gold depends on particle size, with the reactivity increasing as the particle diameter decreases. However, investigations into behaviour in the subnanometre regime (where gold exists as small clusters of a few atoms) began only recently with
Ion-beam-induced desorption as a method for probing the stability of the molecule-substrate interface in self-assembled monolayers.
Sabina Wyczawska et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 12(14), 2554-2557 (2011-09-29)
Tsuneo Kashiwagi et al.
Chemical communications (Cambridge, England), 48(22), 2806-2808 (2012-02-04)
We have successfully demonstrated that a microflow reactor is extremely useful in controlling reactions involving an unstable o-benzoquinone. The key features of the method are an effective o-benzoquinone generation and its rapid use for the following reaction without decomposition in
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