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Multicolor Circularly Polarized Photoluminescence and Electroluminescence With 1,2-Diaminecyclohexane Enantiomers

Multicolor Circularly Polarized Photoluminescence and Electroluminescence With 1,2-Diaminecyclohexane Enantiomers

Xu-Feng Luo, Hua-Bo Han, Zhi-Ping Yan, Zheng-Guang Wu, Jian Su, Jian-Wei Zou, Zi-Qi Zhu, You-Xuan Zheng, Jing-Lin Zuo

ACS Appl Mater Interfaces. 2020 May 20;12(20):23172-23180.

PMID: 32326696

Abstract:

Development of simple chiral materials with tunable circularly polarized photoluminescence (CPPL) and circularly polarized electroluminescence (CPEL) for efficient circularly polarized organic light-emitting diodes (CP-OLEDs) is the key toward future 3D displays. In this study, four pairs of chiral 1,2-diaminocyclohexane-based fluorescence enantiomers were efficiently prepared with high yields (up to 92%) and enantiomeric excesses (ee >99%). By the introduction of N-methyl, carbazole, and diphenylamine-donating groups, these materials showed multicolor CPPL and CPEL from blue (420 nm) to red (610 nm) with good thermal and conformational stability. The multilayer CP-OLEDs based on these enantiomers show high external quantum efficiency of up to 5.5% with low-efficiency roll-off and microimage circularly polarized electroluminescence with a dissymmetry factor (gEL) of up to -1.4 × 10-3/+1.3 × 10-3. These results push forward the development of future multicolor circularly polarized electroluminescent materials.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP482379373	Fluorescent red 610		482379-37-3	Price

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