نتایج جستجو برای: Au NPs

تعداد نتایج: 88896  

Journal: :nanomedicine journal 0
katayon bahrami department of pharmaceutical biotechnology and biotechnology research center, faculty of pharmacy,tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) pardis nazari department of pharmaceutical biotechnology and biotechnology research center, faculty of pharmacy,tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mahshid nabavi azad university of pharmaceutical science, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی پزشکی تهران (islamic azad university of tehran medical sciences) marjan golkar azad university of pharmaceutical science, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی پزشکی تهران (islamic azad university of tehran medical sciences) ali almasirad azad university of pharmaceutical science, tehran, iranسازمان اصلی تایید شده: دانشگاه آزاد اسلامی پزشکی تهران (islamic azad university of tehran medical sciences) ahmad reza shahverdi department of pharmaceutical biotechnology and biotechnology research center, faculty of pharmacy,tehran university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

objective(s):   metal nanoparticles (nps) offer a wide variety of potential applications in pharmaceutical sciences due to the unique advances in nanotechnology research. in this work, bimetal ag-au alloy nps were prepared and their combinations with other antibiotics were tested against staphylococcus aureus.   materials and methods: firstly, ag-au alloy nps with au/ag molar ratio of 1:1 was f...

Journal: Nanomedicine Journal 2014
Ahmad Reza Shahverdi, Ali Almasirad Katayon Bahrami Mahshid Nabavi Marjan Golkar Pardis Nazari

Objective(s):   Metal nanoparticles (NPs) offer a wide variety of potential applications in pharmaceutical sciences due to the unique advances in nanotechnology research. In this work, bimetal Ag-Au alloy NPs were prepared and their combinations with other antibiotics were tested against Staphylococcus aureus.   Materials and Methods: Firstly, Ag-Au alloy NPs with Au/Ag molar ratio of 1:1 was f...

Journal: :Chemical communications 2010
Qiangbin Wang Haining Wang Chenxiang Lin Jaswinder Sharma Shengli Zou Yan Liu

Discrete nanostructures of CdSe@ZnS QDs and Au NPs were prepared and the photonic interactions between the QDs and Au NPs were systematically investigated. We found that the Au/QD ratio, separation distances between Au NPs and QDs, and the size of the Au NPs in a given discrete nanostructure all affect the interaction between Au NPs and QDs.

2017
Yu-Ting Tseng Scott G. Harroun Chien-Wei Wu Ju-Yi Mao Huan-Tsung Chang Chih-Ching Huang

We have developed a simple, rapid, high-throughput cancer diagnosis system using functional nanoparticles (NPs) consisting of poly(catechin) capped-gold NPs (Au@PC NPs) and smaller nucleolin-binding aptamer (AS1411) conjugated gold NPs (AS1411-Au NPs). The AS1411-Au NPs/Au@PC NP is used as a targeting agent in laser desorption/ionization mass spectrometry (LDI-MS)-based tumor tissue imaging. Se...

In this study we suggested a new strategy for drug delivery of 6-thioguanine (6-TG) as a cancer drug by loading of this thiolic drug at a surface of Au nanoparticles. For this goal, we synthesized Au nanoparticle (Au/NPs) by reduction of tetrachloroauric (III) acid solutions by sodium borohydride and characterized Au/NPs by X-ray powder diffraction (XRD), dynamic light scattering (DLS), Ultravi...

2015
Hongyu Wang Ling Xu Renqi Zhang Zhaoyun Ge Wenping Zhang Jun Xu Zhongyuan Ma Kunji Chen

Au nanoparticles (Au NPs)/CdTe/CdS QDs nanocomposite films were fabricated by deposition of Au NPs and layer-by-layer self-assembly of colloidal CdTe/CdS QDs. Photoluminescence (PL) spectra showed that Au NPs incorporation resulted in an increase of PL intensity about 16-fold compared with that of the samples without Au NPs. PL enhancement of Au NPs/CdTe/CdS QDs nanocomposite films can be contr...

Journal: :Small 2011
Matthew S Shore Junwei Wang Aaron C Johnston-Peck Amy L Oldenburg Joseph B Tracy

Metal nanoparticles (NPs) are of great interest due to their special optical, [ 1–3 ] electronic, [ 4–8 ] and catalytic [ 9,10 ] properties. [ 11 ] Among metal NPs, Au NPs have been investigated most extensively because of their facile preparation, resistance to oxidation, and surface plasmon resonance (SPR) band that can absorb and scatter visible light. [ 3 ] Core/ shell and alloy bimetallic ...

2014
Florian Correard Ksenia Maximova Marie-Anne Estève Claude Villard Myriam Roy Ahmed Al-Kattan Marc Sentis Marc Gingras Andrei V Kabashin Diane Braguer

Due to excellent biocompatibility, chemical stability, and promising optical properties, gold nanoparticles (Au-NPs) are the focus of research and applications in nanomedicine. Au-NPs prepared by laser ablation in aqueous biocompatible solutions present an essentially novel object that is unique in avoiding any residual toxic contaminant. This paper is conceived as the next step in development ...

2014
Xunzhi Huang Yongsheng Li Xiaoxia Zhong

Atmospheric microplasma electrochemistry was utilized to synthesize Au nanoparticles (NPs). The synthesized Au NPs were investigated as a function of reduction current, solution temperature, and stirring (or not) by using ultraviolet-visible (UV-Vis) absorbance and transmission electron microscopy (TEM). It was illustrated that high current promoted the growth of Au NPs with small size, and mor...

Journal: :Molecules 2013
Chao Lin Kai Tao Dayin Hua Zhen Ma Shenghu Zhou

Gold nanoparticles (Au NPs) were prepared by reducing HAuCl4 with NaBH4. Their average particle sizes could be tuned in the range of 1.7 and 8.2 nm, by adjusting the amount of NaBH4 used during synthesis. The obtained Au NPs (colloids) were then loaded onto a commercial Al2O3 support to prepare Au/Al2O3 catalysts with tunable Au particle sizes. An optimal pH value (5.9) of the Au colloid soluti...

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