Near-infrared emitting iridium complexes: Molecular design, photophysical properties, and related applications.
Optical materials
Organic chemistry
Photonics
Journal
iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038
Informations de publication
Date de publication:
20 Aug 2021
20 Aug 2021
Historique:
entrez:
12
8
2021
pubmed:
13
8
2021
medline:
13
8
2021
Statut:
epublish
Résumé
Organic light-emitting diodes (OLEDs) have become popular displays from small screens of wearables to large screens of televisions. In those active-matrix OLED displays, phosphorescent iridium(III) complexes serve as the indispensable green and red emitters because of their high luminous efficiency, excellent color tunability, and high durability. However, in contrast to their brilliant success in the visible region, iridium complexes are still underperforming in the near-infrared (NIR) region, particular in poor luminous efficiency according to the energy gap law. In this review, we first recall the basic theory of phosphorescent iridium complexes and explore their full potential for NIR emission. Next, the recent advances in NIR-emitting iridium complexes are summarized by highlighting design strategies and the structure-properties relationship. Some important implications for controlling photophysical properties are revealed. Moreover, as promising applications, NIR-OLEDs and bio-imaging based on NIR Ir(III) complexes are also presented. Finally, challenges and opportunities for NIR-emitting iridium complexes are envisioned.
Identifiants
pubmed: 34381981
doi: 10.1016/j.isci.2021.102858
pii: S2589-0042(21)00826-9
pmc: PMC8340135
doi:
Types de publication
Journal Article
Review
Langues
eng
Pagination
102858Informations de copyright
© 2021 The Author(s).
Déclaration de conflit d'intérêts
The authors declare no competing interests.
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