Construction of Circular Polarized Luminescence Molecules for Intense Near Infrared OLEDs

Ning Liang, Jianxun Liu, Yufan Lin, Zeling Xie, Bin Bin Cui, Zhong Liang Gong, Qiang Gan, Yu Wu Zhong, Yansong Feng*, Chang Jiang Yao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The exploration of organic near-infrared (NIR) luminescence, along with circularly polarized luminescence (CPL), is of vital importance due to its significance in medical and optoelectronic applications. Integrating a chiral unit into a D–A molecular structure in this research realized emission peaks at 744 nm, exhibiting a dissymmetric factor of −1.67 × 10−3. The introduced chiral TPA derivative not only imparts aggregation-induced emission properties and CPL capabilities but also induces a redshift in the emission spectrum. Consequently, the fabricated NIR organic light-emitting devices (OLEDs), achieve maximum electroluminescent peaks at 748 nm in nondoped devices with the external quantum efficiency of 13.7% in doped devices. This pioneering research provides inspiration for the design of NIR molecules possessing CPL properties in the future, particularly in promoting the application of intense NIR-OLEDs.

Original languageEnglish
Article number2303155
JournalAdvanced Optical Materials
Volume12
Issue number16
DOIs
Publication statusPublished - 6 Jun 2024

Keywords

  • chiral units
  • circularly polarized luminescence
  • near-infrared emission
  • organic light emitting diodes

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