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Min-Hwa Chang et al.
Nanoscale research letters, 9(1), 330-330 (2014-07-16)
Thin and long silver nanowires were successfully synthesized using the polyvinylpyrrolidone (PVP)-assisted polyol method in the presence of ionic liquids, tetrapropylammonium chloride and tetrapropylammonium bromide, which served as soft template salts. The first step involved the formation of Ag nanoparticles
Perrine Cheviron et al.
Carbohydrate polymers, 134, 635-645 (2015-10-03)
The present work reports a strategy involving the preparation of nanostructured starch based film containing silver nanoparticles (AgNPs) using a completely green chemistry process. The nanocomposite films were prepared by solution cast process. The AgNPs were in situ generated inside
Wesam Salem et al.
International journal of medical microbiology : IJMM, 305(1), 85-95 (2014-12-04)
Vibrio cholerae and enterotoxic Escherichia coli (ETEC) remain two dominant bacterial causes of severe secretory diarrhea and still a significant cause of death, especially in developing countries. In order to investigate new effective and inexpensive therapeutic approaches, we analyzed nanoparticles
Taomin Huang et al.
Talanta, 147, 501-509 (2015-11-26)
To the best of our knowledge, this study is the first to successfully apply a novel, highly selective enrichment technique based on boronic acid-functionalized core-shell magnetic microspheres (BA-Fe3O4@SiO2-Au@mSiO2) with a large surface area and uniform pore size, to determine the
Hyen-Wook Kang et al.
Journal of nanoscience and nanotechnology, 13(5), 3550-3553 (2013-07-19)
We fabricated a polymer-metal combined atomic force microscopy (AFM) probe by two steps; a polymeric resin was used at first step, and a metal-ion was used at second step which needs more fabricating time than the resin. At first step
Benjamin P Colman et al.
PloS one, 8(2), e57189-e57189 (2013-03-08)
A large fraction of engineered nanomaterials in consumer and commercial products will reach natural ecosystems. To date, research on the biological impacts of environmental nanomaterial exposures has largely focused on high-concentration exposures in mechanistic lab studies with single strains of
Vinod Vellora Thekkae Padil et al.
Carbohydrate polymers, 121, 468-476 (2015-02-11)
Electrospun nanofibre membranes from blend solutions of deacetylated gum kondagogu and polyvinyl alcohol of various weight proportions were prepared. The electrospun membrane was cross linked by heating at 150°C for 6h and later modified by methane plasma treatment. Membranes were
Chiara Di Bari et al.
Bioelectrochemistry (Amsterdam, Netherlands), 107, 30-36 (2015-11-03)
cathodes. Nanostructuring was provided by gold nanorods (AuNRs), which were characterized and covalently attached to electrodes made of low-density graphite. The nanostructured electrode was the scaffold for covalent and oriented attachment of ThLc. The bioelectrocatalytic currents measured for oxygen reduction
Ramesh Subbiah et al.
International journal of nanomedicine, 10 Spec Iss, 191-201 (2015-09-09)
In order for nanoparticles (NPs) to be applied in the biomedical field, a thorough investigation of their interactions with biological systems is required. Although this is a growing area of research, there is a paucity of comprehensive data in cell-based
Mohammad Ali et al.
Materials science & engineering. C, Materials for biological applications, 58, 359-365 (2015-10-20)
Unlike chemical synthesis, biological synthesis of nanoparticles is gaining tremendous interest, and plant extracts are preferred over other biological sources due to their ample availability and wide array of reducing metabolites. In this project, we investigated the reducing potential of
Jing-Kun Yan et al.
Carbohydrate polymers, 97(2), 391-397 (2013-08-06)
A facile, simple, and eco-friendly method using 4-acetamido-2,2,6,6-tetramethypiperidine-1-oxyl radical-oxidized curdlan (Oc) as both reducing and stabilizing agents was developed for the fabrication of silver nanoparticles (AgNPs) from silver nitrate (AgNO₃). The structure, morphology, and particle size of the as-prepared AgNPs
Duraisamy Kalpana et al.
Enzyme and microbial technology, 52(3), 151-156 (2013-02-16)
Silver nanoparticles were synthesized by biological method using cultural filtrate of Klebsiella pneumoniae cultured under simulated microgravity and silver nitrate solution as precursor. The nanoparticles exhibited typical plasmon absorption maximum of silver nanoparticles between 405 and 407 nm. Spherical silver
Claire Saulou et al.
Analytical and bioanalytical chemistry, 405(8), 2685-2697 (2013-01-29)
The present work was focused on elucidating biochemical changes in the model bacterium Escherichia coli exposed to ionic silver mediated stress, at a single-cell scale. In order to achieve this, in situ synchrotron Fourier-transform infrared (sFTIR) microspectroscopy was performed, for
Irina Blinova et al.
Environmental science and pollution research international, 20(5), 3456-3463 (2012-11-13)
Although silver nanoparticles (NPs) are increasingly used in various consumer products and produced in industrial scale, information on harmful effects of nanosilver to environmentally relevant organisms is still scarce. This paper studies the adverse effects of silver NPs to two
Isaac Asiamah et al.
Bioorganic & medicinal chemistry, 23(21), 7007-7014 (2015-10-07)
Nordihydroguaiaretic acid (NDGA) is a natural polyphenol with a broad spectrum of pharmacological properties. However, its usefulness is hindered by the lack of understanding of its pharmacological and toxicological pathways. Previously we showed that oxidative cyclisation of NDGA at physiological
Caroline Le Maréchal et al.
Veterinary research, 42, 35-35 (2011-02-18)
Staphylococcus aureus is a major cause of mastitis in ruminants. In ewe mastitis, symptoms range from subclinical to gangrenous mastitis. S. aureus factors or host-factors contributing to the different outcomes are not completely elucidated. In this study, experimental mastitis was
Masato Miyakawa et al.
Nanoscale, 6(15), 8720-8725 (2014-06-21)
Continuous synthesis of Pd@Pt and Cu@Ag core-shell nanoparticles was performed using flow processes including microwave-assisted Pd (or Cu) core-nanoparticle formation followed by galvanic displacement with a Pt (or Ag) shell. The core-shell structure and the nanoparticle size were confirmed using
K Sheehy et al.
Journal of colloid and interface science, 443, 56-64 (2014-12-23)
Metallic nanoparticles such as nano-silver have found many applications as alternative antimicrobials in recent years. However methods for determining their proposed antimicrobial activity have received little attention to date. The disk diffusion assay is commonly used as a demonstration of
Mohammad Kamruzzaman et al.
Biomedical microdevices, 15(1), 195-202 (2012-10-12)
A rapid and sensitive chemiluminescence (CL) system coupled with a microfluidic chip has been presented to determine vitamin B12 (VB12) based on the reaction of luminol and silver nitrate (AgNO(3)) in the presence of gold nanoparticles (AuNPs). A microfluidic chip
Lung-Shuo Wang et al.
International journal of nanomedicine, 10, 2685-2696 (2015-04-17)
Silver nanoparticles have been used in various fields, and several synthesis processes have been developed. The stability and dispersion of the synthesized nanoparticles is vital. The present article describes a novel approach for one-step synthesis of silver nanoparticles-embedded chitosan particles.
Merel J C van der Ploeg et al.
Environmental toxicology and chemistry, 33(4), 743-752 (2013-12-10)
The impact of silver nanoparticles (AgNP; at 0 mg Ag/kg, 1.5 mg Ag/kg, 15.4 mg Ag/kg, and 154 mg Ag/kg soil) and silver nitrate (AgNO3 ; 15.4 mg Ag/kg soil) on earthworms, Lumbricus rubellus, was assessed. A 4-wk exposure to
Nikunj Mapara et al.
Applied microbiology and biotechnology, 99(24), 10655-10667 (2015-09-13)
Pseudomonas aeruginosa is a leading opportunistic pathogen and its expanding drug resistance is a growing menace to public health. Its ubiquitous nature and multiple resistance mechanisms make it a difficult target for antimicrobial chemotherapy and require a fresh approach for
Tao Xu et al.
Organic letters, 14(21), 5416-5419 (2012-10-24)
A silver-catalyzed intramolecular oxidative aminofluorination of alkynes has been developed by using NFSI as a fluorinating reagent. This reaction represents an efficient method for the synthesis of various 4-fluoroisoquinolines and 4-fluoropyrrolo[α]isoquinolines.
Hadiyah N Green et al.
International journal of nanomedicine, 9, 5093-5102 (2014-11-15)
Nanoparticle (NP)-enabled near infrared (NIR) photothermal therapy has realized limited success in in vivo studies as a potential localized cancer therapy. This is primarily due to a lack of successful methods that can prevent NP uptake by the reticuloendothelial system
Nuray Senyüz et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 101, 167-171 (2012-10-27)
A novel heterodinuclear complex formed by the reaction of silver nitrate with Schiff base complex of copper(II) has been synthesized and characterized by Infrared (IR), ultraviolet-visible (UV-VIS), electron paramagnetic resonance (EPR) and X-ray diffraction methods. Preparation and crystal structure of
Tomonobu Ishida et al.
Organic letters, 15(4), 848-851 (2013-02-05)
Benzoxazine-2-one derivatives are important heterocycle structures because of their various pharmaceutical activities, though their synthetic methods had been limited. In some cases, toxic reagents, such as phosgene or carbon monoxide, are required. It was found that a silver catalyst successfully
Chia-Yun Chen et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 16(3), 540-545 (2014-12-19)
Metal-assisted chemical etching (MaCE) on silicon (Si)-mediated by polyvinylpyrrolidone (PVP)-is systematically investigated herein. It is found that the morphologies and crystallographic natures of the grown silver (Ag) dendrites can be significantly modulated, with the presence of PVP in the MaCE
Fabrication of SWCNT-Ag nanoparticle hybrid included self-assemblies for antibacterial applications.
Sayanti Brahmachari et al.
PloS one, 9(9), e106775-e106775 (2014-09-06)
The present article reports the development of soft nanohybrids comprising of single walled carbon nanotube (SWCNT) included silver nanoparticles (AgNPs) having superior antibacterial property. In this regard aqueous dispersing agent of carbon nanotube (CNT) containing a silver ion reducing unit
Takamitsu Miyayama et al.
Toxicology, 305, 20-29 (2013-01-22)
Silver (Ag) possesses antibacterial activity and has been used in wound dressings and deodorant powders worldwide. However, the metabolic behavior and biological roles of Ag in mammals have not been well characterized. In the present study, we exposed human bronchial
R K Kar et al.
Pakistan journal of biological sciences : PJBS, 16(24), 1991-1996 (2014-02-13)
Regulation of stomatal aperture is crucial in terrestrial plants for controlling water loss and gaseous exchange with environment. While much is known of signaling for stomatal opening induced by blue light and the role of hormones, little is known about
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