Abstract
It has been a mystery that the detected fluorescence intensity of single MEH-PPV molecules is much lower than expected based on their chain length. In this review, after re-evaluating of the literature data in the light of new specially designed experiments, we present a comprehensive explanation of this issue: The actual size of MEH-PPV molecules at single molecule level is much smaller than expected due to de-aggregation and chain scission, while static quenching ("dark matter") also exists for large molecules, further reducing their brightness. (Figure presented.)
Original language | English |
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Pages (from-to) | 2536-2544 |
Number of pages | 9 |
Journal | Chinese Journal of Chemistry |
Volume | 41 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2023 Oct |
Subject classification (UKÄ)
- Atom and Molecular Physics and Optics
- Physical Chemistry
Free keywords
- Brightness
- Fluorescence
- MEH-PPV
- Molecular weight
- Single molecule spectroscopy