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Sudip Mukherjee et al.
Nanotechnology, 23(45), 455103-455103 (2012-10-16)
The biological approach to synthesis of AuNPs is eco-friendly and an ideal method to develop environmentally sustainable nanoparticles alternative to existing methods. We have developed a simple, fast, clean, efficient, low-cost and eco-friendly single-step green chemistry approach for the synthesis
Qingshuo Chen et al.
Talanta, 89, 142-148 (2012-01-31)
In this work, we utilize the triangular gold nanoparticles (AuNPs) prepared by trisodium citrate reduction of HAuCl(4) in presence of nonionic fluorosurfactant (FSN) as a novel chemiluminescence (CL) probe for the determination of captopril. Captopril can induce a sharp decrease
Sougata Ghosh et al.
Journal of nanobiotechnology, 10, 17-17 (2012-05-03)
Novel approaches for synthesis of gold nanoparticles (AuNPs) are of utmost importance owing to its immense applications in diverse fields including catalysis, optics, medical diagnostics and therapeutics. We report on synthesis of AuNPs using Gnidia glauca flower extract (GGFE), its
Sung Yong Jung et al.
The international journal of cardiovascular imaging, 28(8), 1853-1858 (2012-02-23)
To measure instantaneous velocity fields of venous blood flow in a rat using X-ray particle tracking method. Gold nanoparticles (AuNPs) incorporated chitosan microparticles were applied as biocompatible flow tracers. After intravenous injection of the AuNP-chitosan particles into 7- to 9-week-old
Stefano Frasca et al.
Bioelectrochemistry (Amsterdam, Netherlands), 87, 33-41 (2012-01-03)
The present study reports a facile approach for sulfite biosensing, based on enhanced direct electron transfer of a human sulfite oxidase (hSO) immobilized on a gold nanoparticles modified electrode. The spherical core shell AuNPs were prepared via a new method
Tailored microcrystal growth: a facile solution-phase synthesis of gold rings.
Hyojong Yoo et al.
Advanced materials (Deerfield Beach, Fla.), 23(38), 4431-4434 (2011-10-01)
Limin Yang et al.
Talanta, 89, 136-141 (2012-01-31)
A simple and effective strategy was proposed for synthesis of AuNPs@polyaniline (AuNPs@PANI) core-shell nanocomposites. AuNPs@PANI nanocomposites were prepared by one-step chemical oxidative polymerization of aniline using chloroaurate acid as the oxidant and AuNPs as the seeds. The synthesized AuNPs@PANI nanocomposites
Interplay between gold nanoparticle biosynthesis and metabolic activity of cyanobacterium Synechocystis sp. PCC 6803.
Monica Focsan et al.
Nanotechnology, 22(48), 485101-485101 (2011-11-11)
M. Adnan Mansour et al.
Inorganic chemistry, 37(18), 4625-4632 (2001-10-24)
Two Au(III) dithiolate complexes, [Au(dbbpy)(tdt)]PF(6) and Au(eta(2)-C,N-ppy)(tdt), (dbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine; tdt = 3,4-toluenedithiolate; ppy = C-deprotonated 2-phenylpyridine), have been prepared and structurally characterized by X-ray crystallography. The complexes have low-energy absorption bands that exhibit mild solvatochromism (lambda(max) = 444 nm
Wenbo Lu et al.
Journal of hazardous materials, 197, 320-326 (2011-10-25)
In this paper, we develop a cost-effective and simple route for the synthesis of Au nanoparticles (AuNPs) decorated graphene oxide (GO) nanosheets using polyoxyethylene sorbitol anhydride monolaurate (TWEEN 20) as a stabilizing agent for GO as well as a reducing
Jinan Chai et al.
Proceedings of the National Academy of Sciences of the United States of America, 108(49), 19521-19525 (2011-11-23)
The ability to control the placement of individual protein molecules on surfaces could enable advances in a wide range of areas, from the development of nanoscale biomolecular devices to fundamental studies in cell biology. Such control, however, remains a challenge
Sergey S Zalesskiy et al.
Journal of the American Chemical Society, 135(9), 3550-3559 (2013-01-02)
Soluble gold precatalysts, aimed for homogeneous catalysis, under certain conditions may form nanoparticles, which dramatically change the mechanism and initiate different chemistry. The present study addresses the question of designing gold catalysts, taking into account possible interconversions and contamination at
Xiaokong Liu et al.
Langmuir : the ACS journal of surfaces and colloids, 28(38), 13720-13726 (2012-09-08)
In this report, we demonstrate a rapid and simple seeded growth method for synthesizing monodisperse, quasi-spherical, citrate-stabilized Au nanoparticles (Au NPs) via H(2)O(2) reduction of HAuCl(4). Au NPs with diameter ranging from 30 to 230 nm can be synthesized by
Andrew R Garcia et al.
Colloids and surfaces. B, Biointerfaces, 105, 167-172 (2013-02-05)
Fluorescent insulin fibrils gold nanoclusters (Au NCs) have been synthesized through the reduction of gold by human insulin in fibrillated form. Likewise, nanocluster formation has been regulated by insulin, working as a protein-based template. Environment- and surface-controlled experiments have shown
Ja-an Annie Ho et al.
Analytical chemistry, 84(7), 3246-3253 (2012-03-01)
In this paper, we describe a simple one-pot method, employing l-3,4-dihydroxyphenylalanine (L-DOPA) as a reducing/capping reagent, for the synthesis of fluorescent gold nanoclusters (AuNCs). Within a short reaction time of 15 min (excluding the time required for purification), this strategy
Xianqing Tian et al.
Talanta, 93, 79-85 (2012-04-10)
Graphene decorated with gold nanoparticles (AuNPs-β-CD-Gra) has been synthesized by in situ thermal reduction of graphene oxide and HAuCl(4) with β-cyclodextrin (β-CD) under alkaline condition. The AuNPs-β-CD-Gra product was well characterized by infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy
Swee Jen Cho et al.
Physical chemistry chemical physics : PCCP, 14(45), 15793-15801 (2012-10-23)
Deposition of nanostructured metals on substrates is important for the fundamental study and practical application, such as in optics and catalysis. In this paper, we report the deposition of gold (Au) nanoplates and porous platinum (Pt) structures on substrates through
Xiaorong Zhang et al.
Nanotechnology, 22(35), 355603-355603 (2011-08-11)
In this paper, a pH-inductive protein-scaffold biosynthesis of shape-tunable crystalline gold nanoparticles at room temperature has been developed. By simple manipulation of the reaction solution's pH, anisotropic gold nanoparticles including spheres, triangles and cubes could be produced by incubating an
S Veeraapandian et al.
Journal of biomedical nanotechnology, 8(1), 140-148 (2012-04-21)
Escherichia coli is used for eco-friendly extra cellular synthesis of metallic silver and gold nanoparticles. This is achieved by reducing AgNO3 and HAuCl4 solutions respectively under ambient conditions by using the extra cellular protein produced by the microorganism. The proteins
Jin Ran et al.
Journal of hazardous materials, 241-242, 63-72 (2012-10-11)
Novel guanidylated hollow fiber membranes are prepared based on brominated poly (2,6-dimethyl-1,4-phenylene oxide) (BPPO) under mild reaction conditions. 1H-pyrazole-1-carboxamidine hydrochloride (HPCA) is employed for the guanidylation in aqueous solution at room temperature. The obtained guanidylated PPO hollow fiber membranes (GPPO
Al-Mahmnur Alam et al.
Analytical and bioanalytical chemistry, 404(10), 3165-3173 (2012-10-12)
Chemiluminescence (CL) emission from luminol-tetrachloroaurate ([AuCl(4)](-)) system studied in presence of monosaccharide sugars such as glucose and fructose was investigated on a microfluidic chip fabricated by the soft lithography technique. CL emission from the luminol-[AuCl(4)](-) system at 430 nm was
R Balagurunathan et al.
Indian journal of biochemistry & biophysics, 48(5), 331-335 (2011-12-15)
Biosynthesis of gold nanoparticles by Streptomycetes from Himalayan Mountain was undertaken for the first time. Out of 10 actinomycete strains tested, four strains (D10, HM10, ANS2 and MSU) showed evidence for the intracellular biosynthesis of gold nanoparticles, among which the
T Stalin Dhas et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 99, 97-101 (2012-10-13)
Functionalized metal nanoparticles are unique in nature and are being developed for its specificity in drug targeting. In the present study, aqueous extract of Sargassum myriocystum is used for the biosynthesis of gold nanoparticles (AuNPs) by the reduction of chloroauric
Edward R Williams et al.
Chemical communications (Cambridge, England), 49(3), 249-251 (2012-11-24)
Copper chloropyrophosphate frameworks have been synthesised with a wide variety of complex inorganic anions trapped in a large, flexible, one-dimensional pore, with anions including chloride, bromide, phosphate and the complex metal halo-anions PtCl(4)(2-), PdBr(4)(2-), CuCl(4)(2-) and AuCl(4)(-).
Theodore S Sabir et al.
Langmuir : the ACS journal of surfaces and colloids, 29(12), 3903-3911 (2013-03-12)
We report the seeded synthesis of gold nanoparticles (GNPs) via the reduction of HAuCl4 by (L31 and F68) triblock copolymer (TBP) mixtures. In the present study, we focused on [TBP]/[Au(III)] ratios of 1-5 (≈1 mM HAuCl4) and seed sizes ~20
Haolan Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 28(36), 13060-13065 (2012-08-22)
Polydopamine (PDA)-Au Janus particles were obtained by simply adding HAuCl(4) to a PDA particle suspension, prepared via self-polymerization of dopamine in basic solution at room temperature. The structures of the PDA-Au particles are readily controlled by electrostatic repulsion between the
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