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Showing 1-30 of 85 results for "V900145" within Papers
Yuezhong Wen et al.
Archives of environmental contamination and toxicology, 66(3), 400-406 (2013-12-11)
In this study, we evaluated the role of 2,2'-bipyridine-5,5'-dicarboxylic acid (Bpy-COOH) in protecting Chlorella vulgaris from the oxidative stress and toxicity induced by Cu(II). Both in vivo and in vitro tests were performed. Different addition orders of Bpy-COOH and Cu(II)
Fengniu Lu et al.
Dalton transactions (Cambridge, England : 2003), 42(34), 12093-12100 (2013-05-21)
A novel luminescent biscyclometalated iridium(III) complex [Ir(C^N)2bpy]PF6 (Ir-S, bpy = 2,2'-bipyridine) containing two 2-phenylpyridine (ppy) cyclometalating ligands (C^N) functionalized with 1,3-dithiane for the detection of Hg(2+) ions has been synthesized and characterized by spectroscopic and photophysical measurements. The luminescence of
Pratistha Dwivedi et al.
Anaerobe, 35(Pt B), 77-91 (2015-08-05)
The prevailing scenario of bioterrorism warrants development of medical countermeasures with expanded coverage of select agents. Clostridium perfringens is a pathogen of medical, veterinary and military importance, and has been listed as Validated Biological Agent. We employed 2DE-MS approach to
Zheng-Zheng Li et al.
Inorganic chemistry, 52(17), 10087-10095 (2013-08-21)
Four new ruthenium(II) complexes [Ru(bpy)2(TMBiimH2)](ClO4)2 (Ru-5; bpy is 2,2'-bipyridine and TMBiimH2 is 4,5,4',5'-tetramethyl-2,2'-biimidazole), [Ru(bpy)2(L1H2)](ClO4)2·H2O (Ru-6; L1H2 is 4,5-dimethyl-2-(N,N-diacetyl)carboximidamide-1H-imidazole), [Ru(bpy)2(L2H2)](ClO4)2 (Ru-7; L2H2 is N(1),N(1),N(2),N(2)-tetrakis(acetyl)ethanediimidamide), and [Ru(phen)2(TMBiimH2)](ClO4)2 (Ru-8; phen is 1,10'-phenanthroline) have been synthesized and characterized. Their photophysical and electrochemical properties have
Oscar Filevich et al.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 12(9), 1565-1570 (2013-05-16)
We have devised a new caged GABA based on ruthenium bipyridyl coordination chemistry. This phototrigger delivers GABA upon irradiation with wavelengths up to 532 nm undergoing heterolytic photocleavage, in a clean and very fast (a few nanoseconds) photoreaction. With an
Nitsan Maharshak et al.
Microbiology and immunology, 59(8), 452-465 (2015-07-07)
Induction of mammalian heme oxygenase (HO)-1 and exposure of animals to carbon monoxide (CO) ameliorates experimental colitis. When enteric bacteria, including Escherichia coli, are exposed to low iron conditions, they express an HO-like enzyme, chuS, and metabolize heme into iron
Zhicheng Pan et al.
Colloids and surfaces. B, Biointerfaces, 128, 36-43 (2015-03-04)
To fabricate artificial biomembrane mimicking cell surfaces, hydrocarbon/fluorocarbon double-chain phospholipid macromonomer was grafted on polyurethane (PU) film surfaces by surface-initiated atom transfer radical polymerization (SI-ATRP). The surface structures of modified PU film surfaces were characterized by X-ray photoelectron spectroscopy (XPS)
Jing Wang et al.
ACS applied materials & interfaces, 7(9), 5454-5461 (2015-02-19)
Nonspherical spindle-shaped hematite/polymer hybrid nanoparticles (SPNPs) were synthesized via surface-initiated atom transfer radical polymerization (SI-ATRP). The long axis of the SPNPs was 370 ± 65 nm, and the short axis was 80 ± 15 nm with an aspect ratio of
Piersandro Pallavicini et al.
Dalton transactions (Cambridge, England : 2003), 42(13), 4552-4560 (2013-01-29)
A propyltrimethoxysilane-modified 2,2'-bipyridine ligand is synthesized and its acetonitrile solutions are used to prepare monolayers of the molecule on glass surfaces. Absorption and X-ray photoelectron spectroscopy demonstrate that the modified glass surfaces bind Cu(2+) with a 1:1 ratio with respect
Jinhyung Park et al.
Chimia, 67(3), 129-135 (2013-04-12)
Dye-sensitized solar cells (DSCs) are a low cost and colorful promising alternative to standard silicon photovoltaic cells. Though many of the highest efficiencies have been associated with sensitizers absorbing only in the visible portion of the solar radiation, there is
Guanying Li et al.
Chemical communications (Cambridge, England), 49(20), 2040-2042 (2013-02-06)
Based on an azo-thiol redox reaction, a non-emissive dinuclear iridium(III) complex showed off-on phosphorescent response toward thiols and was developed to image thiol levels in living cells.
Marte S Dragset et al.
Antimicrobial agents and chemotherapy, 59(4), 2256-2264 (2015-02-04)
Efficient iron acquisition is crucial for the pathogenesis of Mycobacterium tuberculosis. Mycobacterial iron uptake and metabolism are therefore attractive targets for antitubercular drug development. Resistance mutations against a novel pyrazolopyrimidinone compound (PZP) that is active against M. tuberculosis have been
Isabel Correia et al.
Journal of inorganic biochemistry, 147, 134-146 (2015-04-11)
Five copper(II) complexes, [Cu(sal-Gly)(bipy)](1), [Cu(sal-Gly)(phen)] (2), [Cu(sal-l-Ala)(phen)] (3), [Cu(sal-D-Ala)(phen)] (4), [Cu(sal-l-Phe)(phen)] (5) and five oxidovanadium(IV) complexes, [V(IV)O(sal-Gly)(bipy)] (6), [V(IV)O(sal-Gly)(phen)] (7), [V(IV)O(sal-l-Phe)(H2O)] (8), [V(IV)O(sal-l-Phe)(bipy)] (9), [V(IV)O(sal-l-Phe)(phen)] (10) (sal=salicylaldehyde, bipy=2,2'-bipyridine, phen=1,10-phenanthroline) were synthesized and characterized, and their interaction with DNA was evaluated
Sara Fateixa et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 113, 100-106 (2013-05-30)
Polymer based composites containing metal nanoparticles are shown to provide new substrates for SERS detection and simultaneously enable the development of new tools for molecular sensing. A very important aspect on the use of hybrid materials relates to the observation
Xiang Huang et al.
The Analyst, 140(17), 6015-6024 (2015-07-21)
An efficient aptasensor was developed in which graphene oxide (GO) was employed as an indicator for both electrochemical impedance spectroscopy and electrochemiluminescence (ECL) signal generation. The aptasensor was fabricated by self-assembling the ECL probe of a thiolated adenosine triphosphate binding
Paul E Kruger
Chimia, 67(6), 403-410 (2013-08-16)
Presented herein is a personal overview of some of the contributions we have made over recent years to coordination polymer chemistry employing 2,2'-bipyridine-polycarboxylic acid ligands in conjunction with first row transition, main group or lanthanide metal ions. Primarily the discussion
Yanyan Wang et al.
Langmuir : the ACS journal of surfaces and colloids, 29(4), 1273-1279 (2013-01-05)
In this paper, the fabrication, characterization, and application in oxygen sensing are reported for a novel multifunctional nanomaterial of [Ru(bpy)(2)phen-MMS] (bpy, 2,2'-bipyridyl; phen, phenathrolin) which was simply prepared by covalently grafting the ruthenium(II) polypyridyl compounds into the channels of magnetic
Xing Chen et al.
Chemistry & biodiversity, 10(3), 367-384 (2013-03-16)
To investigate the relationship between the molecular structure and biological activity of polypyridyl Ru(II) complexes, such as DNA binding, photocleavage ability, and DNA topoisomerase and RNA polymerase inhibition, six new [Ru(bpy)(2)(dppz)](2+) (bpy=2,2'-bipyridine; dppz=dipyrido[3,2-a:2,',3'-c]phenazine) analogs have been synthesized and characterized by
Lijie Qin et al.
Dalton transactions (Cambridge, England : 2003), 42(14), 4790-4794 (2013-03-02)
Phosphorescent nanospheres of a carboxyl-functionalized iridium complex ([Ir(ppy)2(Hdcbpy)], ppy: 2-phenylpyridine; Hdcbpy: 4-carboxy-2,2'-bipyridyl-4'-carboxylate) were prepared by a conventional precipitation method. Driven by hydrogen bond interaction between carboxylic groups of the complex and the guest molecule tris(imidazoline), these nanospheres can be transformed
Rajiv Bhalla et al.
Dalton transactions (Cambridge, England : 2003), 44(20), 9569-9580 (2015-04-30)
The reactions of the hydrated Group 13 fluorides, MF3·3H2O (M = Al, Ga or In) with 2,2':6',2''-terpyridyl, 2,2'-bipyridyl or 1,10-phenanthroline under hydrothermal conditions (180 °C/15 h) produced high yields of the complexes [MF3(terpy)]·3H2O, [MF3(bipy)(OH2)]·2H2O and [MF3(phen)(OH2)]. X-Ray crystal structures of
Dominik Brox et al.
PloS one, 8(3), e58049-e58049 (2013-03-14)
Beyond their use in analytical chemistry fluorescent probes continuously gain importance because of recent applications of single-molecule fluorescence spectroscopy to monitor elementary reaction steps. In this context, we characterized quenching of a fluorescent probe by different metal ions with fluorescence
Takaya Shiota et al.
The journal of physical chemistry. B, 117(7), 2215-2220 (2013-01-26)
The oscillation of a polymer gel induced by the Belousov-Zhabotinsky (BZ) reaction was investigated under an external force composed of a square wave. The oscillation of the BZ reaction entrained to the periodic force and the features of this entrainment
Yeru Liu et al.
Physical chemistry chemical physics : PCCP, 15(17), 6170-6174 (2013-03-22)
Efficiencies of up to 8.5% for dye-sensitized solar cells employing a ruthenium dye with a cobalt complex redox mediator have been achieved, by using octadecylphosphonic acid (OPA) as a coadsorbent. This success is due to improved electron injection and reduced
Ziqing Qian et al.
Biochemistry, 53(24), 4034-4046 (2014-06-05)
Cyclic heptapeptide cyclo(FΦRRRRQ) (cFΦR4, where Φ is l-2-naphthylalanine) was recently found to be efficiently internalized by mammalian cells. In this study, its mechanism of internalization was investigated by perturbing various endocytic events through the introduction of pharmacologic agents and genetic
Yunfei Zhang et al.
Scientific reports, 5, 8172-8172 (2015-02-03)
Copper ions play a vital role in a variety of fundamental physiological processes not only in human beings and plants, but also for extensive insects and microorganisms. In this paper, a novel water-soluble ruthenium(II) complex as a turn-on copper(II) ions
Richard L Lord et al.
Inorganic chemistry, 52(3), 1185-1198 (2013-01-25)
A computational approach for calculating the distortions in the lowest energy triplet metal to ligand charge-transfer ((3)MLCT = T(0)) excited states of ruthenium(II)-bipyridine (Ru-bpy) complexes is used to account for the patterns of large variations in vibronic sideband amplitudes found
Uahengo Veikko et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 105, 539-544 (2013-01-29)
A dinuclear ruthenium(II) dye sensitizer, ([Ru(2)(bpy)(4)BL](ClO(4))(2)) referred as Compound 1, where bpy=2,2'-bipyridine, BL=2,2'-((1E,1'E)-(((E)-diazene-1,2-diyl-bis(2,1-phenylene))-bis(azanylylidene))-bis (methanylylidene)) diphenol (a bidentate bridging ligand), was designed, synthesized and characterized. The dye sensitizer was used on the photocatalytic water splitting for hydrogen (H(2)) production over TiO(2)
Alexandra L Klinger et al.
Biochemistry, 53(49), 7724-7734 (2014-11-11)
Structural models of the fibrils formed by the 40-residue amyloid-β (Aβ40) peptide in Alzheimer's disease typically consist of linear polypeptide segments, oriented approximately perpendicular to the long axis of the fibril, and joined together as parallel in-register β-sheets to form
Bole Yu et al.
Chemical communications (Cambridge, England), 49(8), 810-812 (2012-12-14)
A luminescent tetranuclear ruthenium(II) complex was developed to act as a DNA carrier and at the same time offer luminescent imaging to follow the DNA intracellular trafficking with time.
Akira Mochizuki et al.
Journal of biomaterials science. Polymer edition, 26(12), 750-765 (2015-05-30)
The water structure and platelet compatibility of poly(methyl methacrylate (MMA)-block-2-hydroxyethyl methacrylate (HEMA)) were investigated. The molecular weight (Mn) of the polyHEMA segment was kept constant (average: 9600), while the Mn of the polyMMA segment was varied from 1340 to 7390.
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