Photo-oxidation of a prototype conjugated polymer poly[2-methoxy-5-(-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) in blended films with 2,4,7-trinitrofluorenone (TNF) is drastically suppressed upon exposure to green laser radiation under ambient conditions that was observed by using Fourier transform infrared spectroscopy. By increasing the TNF concentration in MEH-PPV, we have found that the photo-oxidation rate and the photoluminescence intensity drop together in a correlated way by three orders of magnitude. We suggest that triplet exciton formation in the MEH-PPV/TNF blends is deeply suppressed blocking the photo-oxidation. These findings may open a way to intrinsically photostable conjugated polymer materials for photonic and photoelectric applications.
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16 June 2008
Research Article|
June 20 2008
Dramatic enhancement of photo-oxidation stability of a conjugated polymer in blends with organic acceptor
Ilya V. Golovnin;
Ilya V. Golovnin
1Faculty of Physics and International Laser Center,
Lomonosov Moscow State University
, Leninskie Gory, 119991 Moscow, Russia
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Artem A. Bakulin;
Artem A. Bakulin
a)
1Faculty of Physics and International Laser Center,
Lomonosov Moscow State University
, Leninskie Gory, 119991 Moscow, Russia
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Sergey A. Zapunidy;
Sergey A. Zapunidy
1Faculty of Physics and International Laser Center,
Lomonosov Moscow State University
, Leninskie Gory, 119991 Moscow, Russia
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Elena M. Nechvolodova;
Elena M. Nechvolodova
2Semenov Institute of Chemical Physics,
Russian Academy of Sciences
, ul. Kosygina 4, 119991 Moscow, Russia
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Dmitry Yu. Paraschuk
Dmitry Yu. Paraschuk
b)
1Faculty of Physics and International Laser Center,
Lomonosov Moscow State University
, Leninskie Gory, 119991 Moscow, Russia
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Ilya V. Golovnin
1
Artem A. Bakulin
1,a)
Sergey A. Zapunidy
1
Elena M. Nechvolodova
2
Dmitry Yu. Paraschuk
1,b)
1Faculty of Physics and International Laser Center,
Lomonosov Moscow State University
, Leninskie Gory, 119991 Moscow, Russia
2Semenov Institute of Chemical Physics,
Russian Academy of Sciences
, ul. Kosygina 4, 119991 Moscow, Russia
a)
Present address: Department of Physical Chemistry, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
b)
Electronic mail: [email protected].
Appl. Phys. Lett. 92, 243311 (2008)
Article history
Received:
January 09 2008
Accepted:
May 27 2008
Citation
Ilya V. Golovnin, Artem A. Bakulin, Sergey A. Zapunidy, Elena M. Nechvolodova, Dmitry Yu. Paraschuk; Dramatic enhancement of photo-oxidation stability of a conjugated polymer in blends with organic acceptor. Appl. Phys. Lett. 16 June 2008; 92 (24): 243311. https://doi.org/10.1063/1.2945801
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