نتایج جستجو برای: cuins2 qds

تعداد نتایج: 3003  

2014
Gordon M Stachowski Christoph Bauer Christian Waurisch Denise Bargheer Peter Nielsen Jörg Heeren Stephen G Hickey Alexander Eychmüller

During the last decades of nanoparticles research, many nanomaterials have been developed for applications in the field of bio-labelling. For the visualization of transport processes in the body, organs and cells, luminescent quantum dots (QDs) make for highly useful diagnostic tools. However, intercellular routes, bio-distribution, metabolism during degradation or quantification of the excreti...

2017
Chenghui Xia Johannes D. Meeldijk Hans C. Gerritsen Celso de Mello Donega

Copper indium sulfide (CIS) quantum dots (QDs) are attractive as labels for biomedical imaging, since they have large absorption coefficients across a broad spectral range, size- and composition-tunable photoluminescence from the visible to the near-infrared, and low toxicity. However, the application of NIR-emitting CIS QDs is still hindered by large size and shape dispersions and low photolum...

2015
Ting Zhang Yiqing Wang Lu Kong Yuying Xue Meng Tang Paul Tchounwou

Although it has been reported that fluorescent quantum dots (QDs) have obvious acute toxic effects in vitro, their toxic effects at low doses or threshold doses are still unknown. Therefore, we evaluated the biological histocompatibility and in vitro toxicity of three types of QDs at threshold doses. Also, we compared the toxic effects of QDs with different raw chemical compositions and sizes. ...

2012
Babu R Prasad Gillian Mullins Natalia Nikolskaya David Connolly Terry J Smith Valérie A Gérard Stephen J Byrne Gemma-Louise Davies Yurii K Gun'ko Yury Rochev

BACKGROUND The inherent toxicity of unmodified Quantum Dots (QDs) is a major hindrance to their use in biological applications. To make them more potent as neuroprosthetic and neurotherapeutic agents, thioglycolic acid (TGA) capped CdTe QDs, were coated with a gelatine layer and investigated in this study with differentiated pheochromocytoma 12 (PC12) cells. The QD--cell interactions were inves...

Journal: :Dalton transactions 2013
Sirshendu Ghosh Kajari Das Kaushik Chakrabarti S K De

Oleic acid capped monodisperse SnO(2) quantum dots (QDs) of size 2.7 nm were synthesized by thermal decomposition and oxidation of Sn(II)(oleate) complex in high boiling nonpolar solvent octadecene using oleic acid as a capping agent and N-methylmorpholine N-oxide as an oxidizing agent. FTIR, DSC and TGA were employed to understand the growth of the oleic acid capped SnO(2) QDs through the deco...

Journal: :Chemical Society reviews 2013
Ken-Tye Yong Wing-Cheung Law Rui Hu Ling Ye Liwei Liu Mark T Swihart Paras N Prasad

Tremendous research efforts have been devoted to fabricating high quality quantum dots (QDs) for applications in biology and medicine. Much of this research was pursued with an ultimate goal of using QDs in clinical applications. However, a great deal of concern has been voiced about the potential hazards of QDs due to their heavy-metal content. Many studies have demonstrated toxicity of variou...

2015
Vladimir V Breus Anna Pietuch Marco Tarantola Thomas Basché Andreas Janshoff

In this work, cytotoxicity and cellular impedance response was compared for CdSe/ZnS core/shell quantum dots (QDs) with positively charged cysteamine-QDs, negatively charged dihydrolipoic acid-QDs and zwitterionic D-penicillamine-QDs exposed to canine kidney MDCKII cells. Pretreatment of cells with pharmacological inhibitors suggested that the uptake of nanoparticles was largely due to receptor...

Journal: :Biomaterials 2012
Dan Shao Qinghui Zeng Zheng Fan Jing Li Ming Zhang Youlin Zhang Ou Li Li Chen Xianggui Kong Hong Zhang

To be able to label a gene and monitor its migration are key important approaches for the clinical application of cancer suicide gene therapy. Photonic nanomaterials are introduced in this work. One of the most promised suicide genes - herpes simplex virus thymidine kinase (HSV-TK) gene - is successfully linked with CdTe/CdS core/shell quantum dots (QDs) via EDC/NHS coupling method. From confoc...

2010
JJ Ramsey Ernian Pan Peter W Chung Zhiming M Wang

A model has been developed to simulate the growth of arrays consisting of a substrate on which alternating layers of quantum dots (QDs) and spacer layers are epitaxially grown. The substrate and spacer layers are modeled as an anisotropic elastic half-space, and the QDs are modeled as point inclusions buried within the half-space. In this model, the strain at the free surface of this half-space...

2017
Yan Zhao Yue Zhang Gaofeng Qin Jinjun Cheng Wenhao Zeng Shuchen Liu Hui Kong Xueqian Wang Qingguo Wang Huihua Qu

The unique features of quantum dots (QDs) make them desirable fluorescent tags for cell and developmental biology applications that require long-term, multitarget, and highly sensitive imaging. In this work, we imaged fluorescent cadmium telluride/zinc sulfide (CdTe/ZnS) QDs in organs, tissues, and cells, and analyzed the mechanism of their lymphatic uptake and cellular distribution. We observe...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید