Direct exciton quenching in single molecules of MEH-PPV at 77 K
Mirzov, Oleg LU ; Cichos, F ; von Borczyskowski, C and Scheblykin, Ivan LU
(2004)
In Chemical Physics Letters
386(4-6).
p.286-290
- Abstract
- Fluorescence blinking behaviour was observed for single molecules of the conjugated polymer poly[2-methoxy,5-(2'-ethylhexyloxy)-p-phenylene-vinylene] (MEH-PPV) at 77 and 300 K. No strict qualitative dependence on temperature was observed, despite of the expected suppression of exciton migration at the low temperature. We assume MEH-PPV molecules to form dense nanoparticles with a characteristic size of about 10 nm at the largest. In such small nanoparticles exciton can be efficiently quenched by a photogenerated quencher due to Forster transfer just after a few hops over the polymer nanoparticle. Thus, long-distance exciton migration is not necessary to have strong fluorescence intensity fluctuations. (C) 2004 Elsevier B.V. All rights... (More)
- Fluorescence blinking behaviour was observed for single molecules of the conjugated polymer poly[2-methoxy,5-(2'-ethylhexyloxy)-p-phenylene-vinylene] (MEH-PPV) at 77 and 300 K. No strict qualitative dependence on temperature was observed, despite of the expected suppression of exciton migration at the low temperature. We assume MEH-PPV molecules to form dense nanoparticles with a characteristic size of about 10 nm at the largest. In such small nanoparticles exciton can be efficiently quenched by a photogenerated quencher due to Forster transfer just after a few hops over the polymer nanoparticle. Thus, long-distance exciton migration is not necessary to have strong fluorescence intensity fluctuations. (C) 2004 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/139105
- author
- Mirzov, Oleg
LU
; Cichos, F
; von Borczyskowski, C
and Scheblykin, Ivan
LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemical Physics Letters
- volume
- 386
- issue
- 4-6
- pages
- 286 - 290
- publisher
- Elsevier
- external identifiers
-
- wos:000220124700012
- scopus:1442311994
- ISSN
- 0009-2614
- DOI
- 10.1016/j.cplett.2004.01.066
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
- id
- 6d370920-d312-43f4-b9ae-9e95717daefe (old id 139105)
- date added to LUP
- 2016-04-01 15:18:44
- date last changed
- 2022-01-28 04:43:13
@article{6d370920-d312-43f4-b9ae-9e95717daefe,
abstract = {{Fluorescence blinking behaviour was observed for single molecules of the conjugated polymer poly[2-methoxy,5-(2'-ethylhexyloxy)-p-phenylene-vinylene] (MEH-PPV) at 77 and 300 K. No strict qualitative dependence on temperature was observed, despite of the expected suppression of exciton migration at the low temperature. We assume MEH-PPV molecules to form dense nanoparticles with a characteristic size of about 10 nm at the largest. In such small nanoparticles exciton can be efficiently quenched by a photogenerated quencher due to Forster transfer just after a few hops over the polymer nanoparticle. Thus, long-distance exciton migration is not necessary to have strong fluorescence intensity fluctuations. (C) 2004 Elsevier B.V. All rights reserved.}},
author = {{Mirzov, Oleg and Cichos, F and von Borczyskowski, C and Scheblykin, Ivan}},
issn = {{0009-2614}},
language = {{eng}},
number = {{4-6}},
pages = {{286--290}},
publisher = {{Elsevier}},
series = {{Chemical Physics Letters}},
title = {{Direct exciton quenching in single molecules of MEH-PPV at 77 K}},
url = {{http://dx.doi.org/10.1016/j.cplett.2004.01.066}},
doi = {{10.1016/j.cplett.2004.01.066}},
volume = {{386}},
year = {{2004}},
}