Time-resolved FRET in AgInS2/ZnS-CdSe/ZnS quantum dot systems
| Autor: | Elena V. Ushakova, Sergei A. Cherevkov, Peter S. Parfenov, Ute Resch-Genger, Anatoly V. Fedorov, Irina V. Martynenko, Aliaksei Dubavik, Alexander V. Baranov, Roman V Evstigneev |
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| Rok vydání: | 2019 |
| Předmět: |
Resonant inductive coupling
Photoluminescence Materials science business.industry Mechanical Engineering Bioengineering 02 engineering and technology General Chemistry Nanosecond 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fluorescence 0104 chemical sciences Förster resonance energy transfer Mechanics of Materials Quantum dot Optoelectronics General Materials Science Electrical and Electronic Engineering 0210 nano-technology business Luminescence Ternary operation |
| Zdroj: | Nanotechnology. 30:195501 |
| ISSN: | 1361-6528 0957-4484 |
| DOI: | 10.1088/1361-6528/ab0136 |
| Popis: | The fast and accurate detection of disease-related biomarkers and potentially harmful analytes in different matrices is one of the main challenges in the life sciences. In order to achieve high signal-to-background ratios with frequently used photoluminescence techniques, luminescent reporters are required that are either excitable in the first diagnostic window or reveal luminescence lifetimes exceeding that of autofluorescent matrix components. Here, we demonstrate a reporter concept relying on broad band emissive ternary quantum dots (QDs) with luminescence lifetimes of a few hundred nanoseconds utilized for prolongating the lifetimes of organic or inorganic emitters with lifetimes in the order of a very few 10 ns or less through fluorescence resonant energy transfer. Using spectrally resolved and time-resolved measurements of the system optical response we demonstrate the potential of lifetime multiplexing with such systems exemplarily for AgInS2/ZnS and CdSe/ZnS QDs. |
| Databáze: | OpenAIRE |
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