The quenching of the fluorescence of carbon dots: A review on mechanisms and applications
| Autor: | Xuguang Zhou, Fanlin Zu, Fanyong Yan, Zhangjun Bai, Jinxia Xu, Yicun Huang, Yinyin Wang |
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| Rok vydání: | 2017 |
| Předmět: |
Photoluminescence
Quenching (fluorescence) Chemistry Dexter electron transfer High Energy Physics::Lattice 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence Photoinduced electron transfer 0104 chemical sciences Analytical Chemistry Electron transfer Förster resonance energy transfer Quantum dot 0210 nano-technology |
| Zdroj: | Microchimica Acta. 184:1899-1914 |
| ISSN: | 1436-5073 0026-3672 |
| Popis: | Carbon dots (CDs) possess unique optical properties such as tunable photoluminescence (PL) and excitation dependent multicolor emission. The quenching and recovery of the fluorescence of CDs can be utilized for detecting analytes. The PL mechanisms of CDs have been discussed in previous articles, but the quenching mechanisms of CDs have not been summarized so far. Quenching mechanisms include static quenching, dynamic quenching, Forster resonance energy transfer (FRET), photoinduced electron transfer (PET), surface energy transfer (SET), Dexter energy transfer (DET) and inner filter effect (IFE). Following an introduction, the review (with 88 refs.) first summarizes the various kinds of quenching mechanisms of CDs (including static quenching, dynamic quenching, FRET, PET and IFE), the principles of these quenching mechanisms, and the methods of distinguishing these quenching mechanisms. This is followed by an overview on applications of the various quenching mechanisms in detection and imaging. |
| Databáze: | OpenAIRE |
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