نتایج جستجو برای: functionalized nanoparticles

تعداد نتایج: 124700  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2009
Kazuhiko Fujiwara Hidehiro Kasaya Nobuaki Ogawa

Physicochemical analyses of Au nanoparticle monolayer formation on a glass surface functionalized with 3-aminopropyltrimethoxysilane (APTMS) and ethyltrimethoxysilane (ETMS) were performed for fabricating a nanoarchitecture of metal nanoparticles using self-assembly. The Au nanoparticle surface density on the functionalized glass surface correlated linearly with the optical response because of ...

2016
Pa Fan Hsiao Sydney Peng Ting-Cheng Tang Shuian-Yin Lin Hsieh-Chih Tsai

In this study, we investigated the effect of (ethylene glycol) (PEG) and PEG-oleylamine (OAm) functionalization on the skin permeation property of gold nanoparticles (GNS) in vivo. Chemisorption of polymers onto GNS was verified by a red shift in the ultraviolet-visible spectrum as well as by a change in the nanoparticle surface charge. The physicochemical properties of pristine and functionali...

Journal: :iranian journal of biotechnology 2016
mohammad reza khataminejad reza mirnejad malike sharif mojtaba hashemi nikita sajadi

background: resistant strains of pseudomonas aeruginosa to imipenem was medical treatment problem, especiallyin burnt units of hospitals. objectives: this study was conducted to evaluate the antimicrobial effect of fe2o3 nanoparticles alone and functionalized with imipenem on p. aeruginosa starins producing metallo b-lactamases (mbl).materials and methods: a disk diffusion method was used to is...

2001
So-Jung Park Anne A. Lazarides Chad A. Mirkin Robert L. Letsinger

In 1996 we reported a method for utilizing DNA and its synthetically programmable sequence recognition properties to assemble nanoparticles functionalized with oligonucleotides into preconceived architectures (Figure 1 B).[1] Since that initial report, our research group and many others have shown that this strategy[2±8] and off-shoots of it that rely on protein ± receptor and antibody ± antige...

Journal: :Journal of nanobiotechnology 2016
Jesus Valdez Swapnil Bawage Idalia Gomez Shree Ram Singh

BACKGROUND Respiratory syncytial virus (RSV) causes severe respiratory infection in infants, children and elderly. Currently, there is no effective vaccine or RSV specific drug for the treatment. However, an antiviral drug ribavirin and palivizumab is prescribed along with symptomatic treatment. RSV detection is important to ensure appropriate treatment of children. Most commonly used detection...

Journal: :Nanoscale 2014
Daniel Nordmeyer Patrick Stumpf Dominic Gröger Andreas Hofmann Sven Enders Sebastian B Riese Jens Dernedde Matthias Taupitz Ursula Rauch Rainer Haag Eckart Rühl Christina Graf

Monodisperse small iron oxide nanoparticles functionalized with dendritic polyglycerol (dPG) or dendritic polyglycerol sulfate (dPGS) are prepared. They are highly stable in aqueous solutions as well as physiological media. In particular, oleic acid capped iron oxide particles (core diameter = 11 ± 1 nm) were modified by a ligand exchange process in a one pot synthesis with dPG and dPGS bearing...

Journal: :Current protocols in nucleic acid chemistry 2002
T Andrew Taton

This unit describes the preparation of conjugates between nanometer-scale gold particles and synthetic oligonucleotides. Oligonucleotide-functionalized gold nanoparticles are finding increased use in both the construction of complex, tailored nanostructures and the optimization of DNA sequence analysis. The protocols in this unit outline the synthesis, purification, and characterization of nano...

Journal: :The Analyst 2012
Trang Huyen Tran SunYoung Park Hyunjin Lee Sungsuk Park Bora Kim Ok-Hee Kim Byung-chul Oh Dongil Lee Hookeun Lee

In recent years, gold nanoparticles have been increasingly utilized as a promising material for biomedical analysis. We report here for the first time the synthesis of ultrasmall gold nanoparticles with core diameter of 1.2 nm functionalized with hydrazide groups and their use in isolation/enrichment of N-glycosylated peptides. Hydrazide-functionalized gold nanoparticles showed excellent stabil...

2016
Kourosh Abdollahi Farshad Yazdani Reza Panahi

Preparation and characterization of cross linked amine-functionalized magnetic nanoparticles as an appropriate support for covalent immobilization on tyrosinase was presented in the study "Covalent immobilization of tyrosinase onto cyanuric chloride crosslinked amine-functionalized superparamagnetic nanoparticles: synthesis and characterization of the recyclable nanobiocatalyst" (Abdollahi et a...

Journal: :ACS nano 2008
Rastko Sknepnek Joshua A Anderson Monica H Lamm Jörg Schmalian Alex Travesset

We consider nanoparticles and functionalized copolymers, block copolymers with attached end groups possessing a specific affinity for nanoparticles, in solution. Using molecular dynamics, we show that nanoparticles are able to direct the self-assembly of the polymer/nanoparticle composite. We perform a detailed study for a wide range of nanoparticle sizes and concentrations. We show that the na...

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