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Two- and three-photon absorption and excitation phosphorescence of oligofluorene-substituted Ir(ppy)3.

Authors
Type
Published Article
Journal
Chemical Communications
1364-548X
Publisher
The Royal Society of Chemistry
Publication Date
Volume
51
Issue
16
Pages
3446–3449
Identifiers
DOI: 10.1039/c4cc09573a
PMID: 25627988
Source
Medline
License
Unknown

Abstract

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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