A dual vis-NIR emissive ytterbium(III) complex with potential application in OLED devices with optical determination of the internal temperature
[Display omitted] •Novel approach towards OLED internal temperature measurements was proposed.•Dual-emissive Yb complex demonstrates visible and NIR luminescence.•Temperature sensitivity of the emission achieved up to 2.4 %/K from −196…+160 °C.•The emissive layer temperature is measured via emission...
Gespeichert in:
Veröffentlicht in: | Inorganic chemistry communications 2025-01, Vol.171, p.113636, Article 113636 |
---|---|
Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | [Display omitted]
•Novel approach towards OLED internal temperature measurements was proposed.•Dual-emissive Yb complex demonstrates visible and NIR luminescence.•Temperature sensitivity of the emission achieved up to 2.4 %/K from −196…+160 °C.•The emissive layer temperature is measured via emission spectra and is up to 114 °C.•Complex exhibits low cytotoxicity, promising for tumor therapy research.
A dual-emissive ytterbium complex with a pyrene-substituted Schiff base ligand was synthesized and characterized. The complex exhibits both visible and near-infrared (NIR) emissions, with the emission bands ratio showing a significant temperature dependence in the range of 77–420 K. This feature makes the complex suitable for luminescent thermometry applications including inside of the organic light-emitting diode (OLEDs) emission layer (EML). Several heterostructures with different hole transport layers and different thicknesses of the EML were tested. The OLED1 with thinner EML demonstrate external current efficiency (ECE) up to 30 μW/W while electroluminescence spectra contain both vis and NIR emission bands that make it possible to measure EML temperature which reach up to 77–114 °C. |
---|---|
ISSN: | 1387-7003 |
DOI: | 10.1016/j.inoche.2024.113636 |