Results 221 to 230 of about 60,710 (268)

Probing Au Nanoparticle Uptake by Enzyme Following the Digestion of a Starch−Au−Nanoparticle Composite

Langmuir, 2008
In this letter, we report on the digestion of starch, when present as a composite with Au nanoparticles (NPs), by alpha-amylase. It has been observed that the rate of digestion of free starch and that in the composite were identical. Also, the well-established iodine test could be carried out to investigate the kinetics in the presence of Au NPs.
Jashmini, Deka, Anumita, Paul, A, Ramesh, Arun, Chattopadhyay   +3 more
openaire   +2 more sources

Hydrophobic Dendrimers as Templates for Au Nanoparticles

Langmuir, 2005
We report the synthesis, characterization, and extraction of Au dendrimer-encapsulated nanoparticles (DENs) prepared in organic solvents. DENs composed of 31 and 55 Au atoms were prepared using organic solvents and poly(amidoamine) (PAMAM) dendrimer templates modified on their periphery with dodecyl groups.
Marc R, Knecht, Joaquin C, Garcia-Martinez, Richard M, Crooks   +2 more
openaire   +2 more sources

Shell Cross-Linked Au Nanoparticles

Langmuir, 2006
The organic layer of thiol-protected Au nanoparticles (ca.3 nm in diameter) was cross-linked using ring-opening metathesis polymerization or Michael addition of polyfunctional amines. The shell cross-linked nanoparticles showed increased stability toward thermal treatment and oxidative etching.
Stéphanie, Koenig, Victor, Chechik
openaire   +2 more sources

Deposition of Au and Ag nanoparticles on PEDOT

Physical Chemistry Chemical Physics, 2011
The deposition of Au and Ag, locally and from bulk solution, on poly(3,4-ethylenedioxythiophene) (PEDOT) was studied. Specifically, PEDOT was electrochemically polymerized onto a glassy carbon (GC) electrode and used for bulk deposition of Au and Ag from their respective ions dissolved in the solution as well as for the local deposition of these metals
Tamar, Danieli, John, Colleran, Daniel, Mandler   +2 more
openaire   +2 more sources

Micropatterns constructed from Au nanoparticles

Chemical Communications, 2003
Covalently linked Au-NPs micropatterns have been successfully fabricated from the self-assembly film composed of 4-mercaptophenol-capped Au nanoparticles (Au-NPs) and -N2+ containing polymers of nitro-diazoresin (NDR) by selective exposure to UV light and development in sodium dodecyl sulfate (SDS) aqueous solution.
Conghua, Lu, Nianzu, Wu, Xiaoming, Jiao, Chuanqiou, Luo, Weixiao, Cao   +4 more
openaire   +2 more sources

Radiotherapy Improvements by Using Au Nanoparticles

Recent Patents on Nanotechnology, 2015
Au nanoparticles can be prepared inside biological solutions and incorporated in special molecules for their transport through blood, drugs and proteins up to the tumour sites or directly injected in their volume when it is possible. The Au nanoparticles are biocompatible and can be accepted locally in the organism also at relatively high ...
openaire   +3 more sources

Nonhomogeneous surface premelting of Au nanoparticles

Nanotechnology, 2008
A reversible nonhomogeneous surface premelting of Au nanoparticles is demonstrated through molecular dynamics simulations. With increasing temperature, liquid-like atoms first appear at some vertices and edges of surface facets, then small liquid regions grow and, at temperatures close to the particle melting temperature, most of the remaining solid ...
Ningyu, Wang, S I, Rokhlin, D F, Farson
openaire   +2 more sources

Synthesis of Au core Au/Ag alloy shell nanoparticles using branched Au nanoparticles as seeds

CrystEngComm, 2011
Novel Au core Au/Ag alloy shell particles denoted as Au@Au/Ag were prepared through the following two-step reduction method using branched Au nanoparticles as seeds. In the first step, branched Au seeds were prepared from an aqueous solution of an HAuCl4/ammonium formate (AF)/poly(vinylpyrrolidone) (PVP) mixture.
Xinling Tang, Masaharu Tsuji
openaire   +1 more source

Electrified Selective “Sponges” Made of Au Nanoparticles

Journal of the American Chemical Society, 2010
Imprinted Au nanoparticle (NP) composites are assembled on Au surfaces by the electropolymerization of thioaniline-functionalized Au NPs in the presence of the imprint molecules, picric acid (1), N,N'-dimethyl-4,4'-bipyridinium (2), and N,N'-dimethylbipyridinium-4,4'-ethylene dichloride (3).
FRASCONI, MARCO, Tel Vered R, Riskin M, Willner I.   +3 more
openaire   +2 more sources

Development of Fe3O4@Au nanoparticles coupled to Au@Ag core-shell nanoparticles for the sensitive detection of zearalenone

Analytica Chimica Acta, 2021
Agricultural products are frequently contaminated by mycotoxins; thus, the accurate detection of mycotoxins is important to food safety. Zearalenone (ZEN), a mycotoxin produced by certain Fusarium and Gibberella species, is a group III carcinogen. We developed a universal surface-enhanced Raman scattering (SERS) aptasensor for the detection of ZEN. The
Ruipeng, Chen, Yunfeng, Sun, Bingyang, Huo, Zefeng, Mao, Xiaojuan, Wang, Shiyu, Li, Ran, Lu, Shuang, Li, Jun, Liang, Zhixian, Gao   +9 more
openaire   +2 more sources