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Showing 1-30 of 90 results for "207942" within Papers
Qingtao Meng et al.
Organic & biomolecular chemistry, 13(10), 2918-2926 (2015-01-09)
Chemosensors play important roles in cation and anion recognition in biological, industrial, and environmental processes. Although many efforts have been made to develop artificial fluorescent receptors for Cu(2+) and S(2-), their applications in the detection in bulk solutions are limited.
Timothy M Alligrant et al.
Lab on a chip, 13(3), 349-354 (2012-12-06)
We report on real-time electrochemical detection of individual DNA hybridization events at an electrode surface. The experiment is carried out in a microelectrochemical device configured with a working electrode modified with single-stranded DNA probe molecules. When a complementary DNA strand
Abraham Daniel Arulraj et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 148, 355-361 (2015-04-26)
In this paper, very simple and rapid sensor has been developed for the spectrophotometric determination of pico-molar level of hydrazine using Alizarin red. There was a decrease of optical intensity of the probe in the presence of hydrazine. The LOD
Paul D Rainville et al.
Bioanalysis, 4(23), 2833-2842 (2012-12-12)
Accurate mass based LC-MS combined with statistical analysis is established as a core analytical technology for metabonomic studies. This is primarily due to the specificity, sensitivity and structural elucidation capabilities of the technology. The vast majority of these studies are
Erika Lattová et al.
Mass spectrometry reviews, 32(5), 366-385 (2013-01-25)
Over the last years, extensive studies have evaluated glycans from different biological samples and validated the importance of glycosylation as one of the most important post-translational modifications of proteins. Although a number of new methods for carbohydrate analysis have been
Satoshi Watanabe et al.
Journal of oleo science, 62(2), 65-71 (2013-02-09)
We report a useful lithographic technique for the fabrication of organic or metal films on wettability-patterned surfaces fabricated solely through self-assembly. The phase-separated structures in mixed Langmuir-Blodgett (LB) films can be tuned by adjusting intermolecular interactions in film-forming molecules such
Xin Tang et al.
PLoS computational biology, 10(6), e1003631-e1003631 (2014-06-06)
Traction forces exerted by adherent cells on their microenvironment can mediate many critical cellular functions. Accurate quantification of these forces is essential for mechanistic understanding of mechanotransduction. However, most existing methods of quantifying cellular forces are limited to single cells
Sajal Shrivastava et al.
Nanoscale, 7(46), 19663-19672 (2015-11-11)
Although real-time label-free fluorescent aptasensors based on nanomaterials are increasingly recognized as a useful strategy for the detection of target biomolecules with high fidelity, the lack of an imaging-based quantitative measurement platform limits their implementation with biological samples. Here we
Xi Wang et al.
Journal of separation science, 38(12), 2167-2173 (2015-04-14)
A facile adsorbent, a nanocomposite of Fe3 O4 and reduced graphene oxide, was fabricated for the selective separation and enrichment of synthetic aromatic azo colorants by magnetic solid-phase dispersion extraction. The nanocomposite was synthesized in a one-step reduction reaction and
Jie Yu et al.
Theranostics, 5(9), 931-945 (2015-07-15)
The ability to selectively destroy cancer cells while sparing normal tissue is highly desirable during the cancer therapy. Here, magnetic targeted photothermal therapy was demonstrated by the integration of MoS2 (MS) flakes and Fe3O4 (IO) nanoparticles (NPs), where MoS2 converted
Eunhee Lee et al.
Journal of nanoscience and nanotechnology, 12(12), 8886-8892 (2013-03-02)
Pd nanoparticle catalysts supported by thiolated graphene oxide (tGO) on a glassy carbon electrode (GCE), and denoted as tGO-Pd/GCE, are used in this study for the electrochemical determination of hydroxylamine and hydrazine. The physicochemical properties of tGO-Pd were characterized by
Rui Gusmão et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(46), 16474-16478 (2015-10-08)
Fluorographane (C1 Hx F1-x+δ )n is a new member of the graphene family that exhibits hydrophobicity and a large band gap that is tunable based on the level of fluorination. Herein, sensing and energy applications of fluorographane are reported. The
Weidong Qu et al.
Biosensors & bioelectronics, 42, 430-433 (2012-12-19)
Graphene-nickel nanoparticle hybrid was prepared by the one-step far infrared-assisted reduction of graphene oxide and nickel (II) ions using hydrazine. It was loaded on the surface of a magnetic electrode for electrochemical sensing. The feasibility and performance of the novel
Casandra R Cox et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(39), 14057-14061 (2014-09-17)
Direct solar-to-fuels conversion can be achieved by coupling a photovoltaic device with water-splitting catalysts. We demonstrate that a solar-to-fuels efficiency (SFE) > 10% can be achieved with nonprecious, low-cost, and commercially ready materials. We present a systems design of a
Tisen Xu et al.
Biosensors & bioelectronics, 73, 167-173 (2015-06-13)
A novel sandwich-type electrochemical immunoassay with sensitivity enhancement was developed for quantitative detection of tissue polypeptide antigen (TPA) by coupling with target-induced tyramine signal amplification on prussian blue-gold hybrid nanostructures. The immunosensor was prepared through immobilizing anti-TPA capture antibody on
Yu Zhang et al.
Nanoscale, 7(32), 13775-13783 (2015-07-30)
Highly stable monodispersed nano Cu hydrosols were facilely prepared by an aqueous chemical reduction method through selecting copper hydroxide (Cu(OH)2) as the copper precursor, poly(acrylic acid) (PAA) and ethanol amine (EA) as the complexing agents, and hydrazine hydrate as the
Muhammad Baseer et al.
Pakistan journal of pharmaceutical sciences, 26(1), 67-73 (2012-12-25)
Fourteen new N-acetylated and non-acetylated pyrazoline derivatives were synthesized by reacting chalcones with hydrazine in the presence of absolute ethanol however reaction was carried out in the presence of glacial acetic acid to afford N-acetylated pyrazolines. The chemical structures of
Sasanka Dalapati et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 102, 314-318 (2012-12-12)
Test paper coated with Schiff base [(N,N(/)-bis(5-nitro-salicylidene)hydrazine] receptor 1 (host) can selectively detect fluoride and acetate ions (guest) by developing yellow color which can be detected by naked-eye both in aqueous-acetonitrile solution and in solid supported test kit. UV-vis spectral
John M Keith
The Journal of organic chemistry, 77(24), 11313-11318 (2012-12-12)
Various pyridine, quinoline, isoquinoline, and pyrimidine N-oxides were converted to their corresponding α-N-aryltriflamidoheteroarenes in good yield by treatment with N-aryltriflimides, both neat and in solution, at temperatures ranging from rt to 100 °C.
Tetsu Yonezawa et al.
Physical chemistry chemical physics : PCCP, 17(48), 32511-32516 (2015-11-26)
Metallic copper fine particles used for electro conductive pastes were prepared by the chemical reduction of cupric oxide microparticles in the presence of gelatin. After reduction, the fine particles were collected by decantation with pH control and washing, followed by
Hatem A Abdel-Aziz et al.
Molecules (Basel, Switzerland), 18(2), 2084-2095 (2013-02-08)
Although salicylaldehyde azine (3) was reported in 1985 as the single product of the reaction of ethyl 2-oxo-2H-chromene-3-carboxylate (1) with hydrazine hydrate, we identified another main reaction product, besides 3, which was identified as malono-hydrazide (4). In the last
Amr A Abdeen et al.
Tissue engineering. Part A, 20(19-20), 2737-2745 (2014-04-08)
The secretion of trophic factors that promote angiogenesis from mesenchymal stem cells (MSCs) is a promising cell-based therapeutic treatment. However, clinical efficacy has proved variable, likely on account of ill-defined cell delivery formulations and the inherent complexity of cellular secretion.
A leavening strategy to prepare reduced graphene oxide foams.
Zhiqiang Niu et al.
Advanced materials (Deerfield Beach, Fla.), 24(30), 4144-4150 (2012-05-01)
Catherine F Wise et al.
Dalton transactions (Cambridge, England : 2003), 44(32), 14265-14271 (2015-07-22)
We report a nickel complex containing a conjugated bis-dithiocarbazate ligand that is an active catalyst for the reduction of protons into hydrogen gas. Light-driven hydrogen generation is observed from a system containing this molecular nickel catalyst coupled with a fluorescein
Nadia A Mohamed et al.
Molecules (Basel, Switzerland), 17(12), 13969-13988 (2012-11-28)
Twelve novel intrinsically colored wholly aromatic azopolyamide-hydrazides containing various proportions of para- and meta-phenylene units were successfully synthesized by a low temperature (-10 °C) solution polycondensation reaction of either 4-amino-3-hydroxybenzhydrazide (4A3HBH) or 3-amino-4-hydroxybenzhydrazide (3A4HBH) with an equimolar amount of either
Mild and rapid Pd-catalyzed cross-coupling with hydrazine in continuous flow: application to the synthesis of functionalized heterocycles.
Andrew DeAngelis et al.
Angewandte Chemie (International ed. in English), 52(12), 3434-3437 (2013-02-14)
Carbon nanotubes oxidized by a green method as efficient metal-free catalysts for nitroarene reduction.
Wu S, et al.
Physical Chemistry Chemical Physics, 17(3), 1567-1571 (2015)
Rodolfo Cruz-Silva et al.
ACS nano, 8(6), 5959-5967 (2014-05-07)
Graphene oxide (GO) has recently become an attractive building block for fabricating graphene-based functional materials. GO films and fibers have been prepared mainly by vacuum filtration and wet spinning. These materials exhibit relatively high Young's moduli but low toughness and
Lihua Zhu et al.
Small (Weinheim an der Bergstrasse, Germany), 11(34), 4385-4393 (2015-06-18)
The design of an ideal heterogeneous catalyst for hydrogenation reaction is to impart the catalyst with synergetic surface sites active cooperatively toward different reaction species. Herein a new strategy is presented for the creation of such a catalyst with dual
Leslie D Field et al.
Inorganic chemistry, 52(3), 1570-1583 (2013-01-24)
Treatment of [RuCl(PP(3)(iPr))](+)Cl(-) (PP(3)(iPr) = P(CH(2)CH(2)P(i)Pr(2))(3)) with hydrazine, phenylhydrazine, and methylhydrazine afforded side-on bound hydrazine complexes [RuCl(η(2)-H(2)N-NH(2))(η(3)-PP(3)(iPr))](+), [RuCl(η(2)-H(2)N-NHPh)(η(3)-PP(3)(iPr))](+), and [RuCl(η(2)-H(2)N-NHMe)(η(3)-PP(3)(iPr))](+). The analogous reactions of [RuCl(2)(PP(3)(Ph))] (PP(3)(Ph) = P(CH(2)CH(2)PPh(2))(3)) with hydrazine, phenylhydrazine, and methylhydrazine afforded end-on bound hydrazine complexes [RuCl(η(1)-H(2)N-NH(2))(PP(3)(Ph))](+), [RuCl(η(1)-H(2)N-NHPh)(PP(3)(Ph))](+)
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