Spirobifluorene-based hole-transporting materials for RGB OLEDs with high efficiency and low efficiency roll-off

Li, Qian; Guo, Yusong; Lan, Jingbo; Yang, Yudong; Wu, Di; Bin, Zhengyang

doi:10.1039/d4sc04979a

Chem. Sci.

2024

DOI: 10.1039/d4sc04979a

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Spirobifluorene-based hole-transporting materials for RGB OLEDs with high efficiency and low efficiency roll-off

Qian Li,

Yusong Guo,

Jingbo Lan

et al.

Abstract: A new kind of 3,3′,6,6′-tetrasubstituted spirobifluorene-based hole-transporting material (HTM) is designed and synthesized, which enables excellent device performance for RGB OLEDs with high efficiency and low efficiency roll-off.

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Flash synthesis of uniform tin-modified carbon skeleton as stable anode for sodium metal batteries

Feng,

Luo,

Lai

et al. 2025

Journal of Energy Storage

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Flash synthesis of uniform tin-modified carbon skeleton as stable anode for sodium metal batteries

Feng,

Luo,

Lai

et al. 2025

Journal of Energy Storage

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Atmospheric Pressure Chemical Ionization Q-Orbitrap Mass Spectrometry Analysis of Gas-Phase High-Energy Dissociation Routes of Triarylamine Derivatives

Wang,

Wu,

et al. 2024

Molecules

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Triarylamine groups have been widely utilized in the development of high-performance charge-transporting or luminescent materials for fabricating organic light-emitting diodes (OLEDs). In this study, atmospheric pressure chemical ionization (APCI) Q-Orbitrap mass spectrometry was adopted to investigate the dissociation behaviors of these triarylamine derivatives. Specifically, taking [M+H]+ as the precursor ion, high-energy collision dissociation (HCD) experiments within the energy range from 0 to 80 eV were carried out. The results showed that triarylamine derivatives with specific structures exhibited distinct fragmentation patterns. For diarylamine, the formation of odd-electron ions was ascribed to the single-electron transfer (SET) reaction mediated by ion-neutral complexes (INCs). In the low-energy range (below 40 eV), proton transfer served as the predominant mechanism for generating even-electron ions. Conversely, in the high-energy range (60 eV and above), the INC-SET reaction dominated. The precursor ion’s structure affects compliance with the “even-electron rule”, which has exceptions. Here, even-electron ion fragmentation was energy-dependent and could deviate from the rule, yet did not conflict with its concept, reflecting dissociation complexity. This research provides insights for triarylamine-based OLED materials, facilitating analysis and identification, and is expected to aid OLED material development.

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Spirobifluorene-based hole-transporting materials for RGB OLEDs with high efficiency and low efficiency roll-off

Abstract: A new kind of 3,3′,6,6′-tetrasubstituted spirobifluorene-based hole-transporting material (HTM) is designed and synthesized, which enables excellent device performance for RGB OLEDs with high efficiency and low efficiency roll-off.

Cited by 2 publications

References 50 publications

Flash synthesis of uniform tin-modified carbon skeleton as stable anode for sodium metal batteries

Flash synthesis of uniform tin-modified carbon skeleton as stable anode for sodium metal batteries

Atmospheric Pressure Chemical Ionization Q-Orbitrap Mass Spectrometry Analysis of Gas-Phase High-Energy Dissociation Routes of Triarylamine Derivatives

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