Two- and three-photon absorption and excitation phosphorescence of oligofluorene-substituted Ir(ppy)3
A series of triscyclometalated iridium complexes with oligofluorene-substituted ppy ligands manifest impressive two- and three-photon absorption properties. In particular, a star-shaped complex bearing three carbazole-terminated trifluorenyl ppy demonstrates a large three-photon absorption cross sec...
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| Veröffentlicht in: | Chemical communications (Cambridge, England) England), 2015-02, Vol.51 (16), p.3446-3449 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A series of triscyclometalated iridium complexes with oligofluorene-substituted ppy ligands manifest impressive two- and three-photon absorption properties. In particular, a star-shaped complex bearing three carbazole-terminated trifluorenyl ppy demonstrates a large three-photon absorption cross section up to 81 × 10(-78) cm(6) s(2) photon(-2). In combination with optimal phosphorescence quantum yields (0.5-0.8), such iridium complexes are effective two- and three-photon excited phosphorescence emitters. |
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| ISSN: | 1359-7345 1364-548X |
| DOI: | 10.1039/c4cc09573a |