Excitation energy transfer in guest host systems studied by magnetic resonance techniques

Blending the conjugated ladder-type poly(paraphenylene) (LPPP) with small amounts of the red emitting poly(perylene-codiethynylbenzene) (PPDB), shifts the photoluminescence emission of the blends from blue to red due to an efficient excitation energy transfer (EET) of singlet excitons. We used the s...

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Bibliographic Details
Published in:Synthetic metals 1999-06, Vol.102 (1), p.1077-1078
Main Authors: List, E.J.W., Partee, J., Graupner, W., Shinar, J., Leising, G.
Format: Article
Language:English
Subjects:
Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Excitation Energy Transfer
Optical emission spectroscopy
Optically detected magnetic resonance
Organic polymers
Physicochemistry of polymers
Poly(paraphenylene)
Properties and characterization
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Summary:Blending the conjugated ladder-type poly(paraphenylene) (LPPP) with small amounts of the red emitting poly(perylene-codiethynylbenzene) (PPDB), shifts the photoluminescence emission of the blends from blue to red due to an efficient excitation energy transfer (EET) of singlet excitons. We used the spin sensitive technique of photoluminescence detected magnetic resonance to monitor interchain polaron pairs and triplet excitons involved in the EET in differently concentrated m-LPPP/PPDB blends and in the pristine polymers. Polaron pairs and triplet excitons in PPDB and LPPP are distinct in their magnetic resonance signatures while the singlet excitons are distinct in their spectral emission position.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(98)01367-8