Linear and cyclic porphyrin hexamers as near-infrared emitters in organic light-emitting diodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 21591769.
- Also identified by DOI 10.1021/nl2008778.
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Abstract
Here we report organic light-emitting diodes incorporating linear and cyclic porphyrin hexamers which have red-shifted emission (λ(PL) = 873 and 920 nm, respectively) compared to single porphyrin rings as a consequence of their extended π-conjugation. We studied the photoluminescence and electroluminescence of blends with poly(9,9'-dioctylfluorene-alt-benzothiadiazole), demonstrating a high photoluminescence quantum efficiency of 7.7% for the linear hexamer when using additives to prevent aggregation and achieving high color purity near-infrared electroluminescence.
Medical subject headings
- Luminescence
- Metalloporphyrins