Nature Materials, volume 7, issue 8, pages 659-664

Towards non-blinking colloidal quantum dots

Benoît Mahler 1
Piernicola Spinicelli 2
Stephanie Buil 3
Xavier Quelin 3
Jean-Pierre Hermier 2, 3
Benoit Dubertret 1
1
 
Laboratoire Photons Et Matière, CNRS UPR5, 75231 Paris, France
3
 
Groupe d’Etude de la Matière Condensée, CNRS UMR8635, Université de Versailles Saint-Quentin-en-Yvelines, 78035 Versailles Cedex, France
Publication typeJournal Article
Publication date2008-06-22
Journal: Nature Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor41.2
ISSN14761122, 14764660
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
At a single-molecule level, fluorophore emission intensity fluctuates between bright and dark states. These fluctuations, known as blinking, limit the use of fluorophores in single-molecule experiments. The dark-state duration shows a universal heavy-tailed power-law distribution characterized by the occurrence of long non-emissive periods. Here we have synthesized novel CdSe–CdS core–shell quantum dots with thick crystalline shells, 68% of which do not blink when observed individually at 33 Hz for 5 min. We have established a direct correlation between shell thickness and blinking occurrences. Importantly, the statistics of dark periods that appear at high acquisition rates (1 kHz) are not heavy tailed, in striking contrast with previous observations. Blinking statistics are thus not as universal as thought so far. We anticipate that our results will help to better understand the physico-chemistry of single-fluorophore emission and rationalize the design of other fluorophores that do not blink. One of the obstacles in using nanocrystals as fluorophores is that they tend to blink. This was thought to be a very general feature. Now, very-high-quality core–shell CdSe–CdS nanocrystals showing highly reduced blinking have been grown. The reduced blinking seems to be related to the thickness of the CdS shell and the high quality of the core–shell interfaces.

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GOST |
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Mahler B. et al. Towards non-blinking colloidal quantum dots // Nature Materials. 2008. Vol. 7. No. 8. pp. 659-664.
GOST all authors (up to 50) Copy
Mahler B., Spinicelli P., Buil S., Quelin X., Hermier J., Dubertret B. Towards non-blinking colloidal quantum dots // Nature Materials. 2008. Vol. 7. No. 8. pp. 659-664.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1038/nmat2222
UR - https://doi.org/10.1038/nmat2222
TI - Towards non-blinking colloidal quantum dots
T2 - Nature Materials
AU - Mahler, Benoît
AU - Spinicelli, Piernicola
AU - Buil, Stephanie
AU - Quelin, Xavier
AU - Hermier, Jean-Pierre
AU - Dubertret, Benoit
PY - 2008
DA - 2008/06/22 00:00:00
PB - Springer Nature
SP - 659-664
IS - 8
VL - 7
SN - 1476-1122
SN - 1476-4660
ER -
BibTex |
Cite this
BibTex Copy
@article{2008_Mahler,
author = {Benoît Mahler and Piernicola Spinicelli and Stephanie Buil and Xavier Quelin and Jean-Pierre Hermier and Benoit Dubertret},
title = {Towards non-blinking colloidal quantum dots},
journal = {Nature Materials},
year = {2008},
volume = {7},
publisher = {Springer Nature},
month = {jun},
url = {https://doi.org/10.1038/nmat2222},
number = {8},
pages = {659--664},
doi = {10.1038/nmat2222}
}
MLA
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MLA Copy
Mahler, Benoît, et al. “Towards non-blinking colloidal quantum dots.” Nature Materials, vol. 7, no. 8, Jun. 2008, pp. 659-664. https://doi.org/10.1038/nmat2222.
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