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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhang, Jian Jie, Guifen Yuan, Jinxin |
| Description | Author Affiliation: Jie G ( State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China. guifenjie@126.com) |
| Abstract | A novel multifunctional dendrimeric CdSe-CdS-Quantum dots (QDs) hybrid superstructure with highly intense electrochemiluminescence (ECL), fluorescence and excellent magnetic property is prepared for the first time, and successfully applied to amplified ECL assays of ATP using DNA cycle amplification technique. The magnetic nanoparticles (MNPs) were firstly assembled with unique dendrimer nanoclusters (NCs), then large numbers of QDs were labeled onto the dendrimer NCs, the superstructure exhibits highly enhanced ECL and fluorescence than the pure QDs. Remarkable ECL quenching of the nanocomposites by gold nanoparticles (GNPs) was observed, based on which a novel strategy for highly sensitive ATP detection was developed by cycle amplification technique. Furthermore, the nanocomposites with excellent magnetic properties can be easily labeled, separated and immobilized onto a magnetic electrode. In particular, all the procedures such as linking GNPs, sensing target and DNA cycle amplification were directly accomplished on the nanocomposites, which is more rapid, convenient, complete and has better reproducibility than the conventional methods on electrode. To the best of our knowledge, this is the first report on the multifunctional QDs superstructure with highly intense ECL, fluorescence, excellent magnetism and its ECL biosensing, which opens a new pathway for developing QD-based nanocomposites for broad applications in ECL bioassays and optical imaging. |
| ISSN | 09565663 |
| Issue Number | 1 |
| Volume Number | 31 |
| e-ISSN | 18734235 |
| Journal | Biosensors and Bioelectronics |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-01-15 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Biosensing Techniques Instrumentation Conductometry Dna Chemistry Luminescent Measurements Nucleic Acid Amplification Techniques Quantum Dots Amplifiers, Electronic Equipment Design Equipment Failure Analysis Journal Article Research Support, Non-u.s. Gov't Discipline Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Medicine Biophysics Biomedical Engineering Biotechnology Electrochemistry |
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