One-Step Synthesis of Spirobi[fluorene] and Spiro[fluorene-9,9′-xanthene] Derivatives and Their Applications in Organic Light-Emitting Devices: Performance Enhancement and Related Optical Phenomena

Guan, Yuqiao; Song, Juan; Sun, Wei; Zhang, Qin; Tang, Chao; Li, Xue; FENG, Xiao-Miao; Qian, Yan; Tao, Youtian; CHEN, Shu-Fen; Wang, Lianhui; Huang, Wei

doi:10.3866/pku.whxb201603232

Acta Physico-Chimica Sinica

2016

DOI: 10.3866/pku.whxb201603232

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One-Step Synthesis of Spirobi[fluorene] and Spiro[fluorene-9,9′-xanthene] Derivatives and Their Applications in Organic Light-Emitting Devices: Performance Enhancement and Related Optical Phenomena

Yuqiao Guan¹,

Juan Song²,

Wei Sun³

et al.

Abstract: GUAN Yu-Qiao et al.: One-Step Synthesis of Spirobi[fluorene] and Spiro[fluorene-9,9′-xanthene] Derivatives No.6

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Insights into the β‐phase of polyfluorene: characterization, regulation, and mechanism

Niu,

Yang,

et al. 2023

Journal of Polymer Science

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Due to the unique blue‐light properties, wide excited emission interval and so on, polyfluorenes (PFs) are among the most promising blue‐light polymers that are widely used in organic lasers and organic light‐emitting diodes. Usually, PFs exhibit two different phases: α‐phase and β‐phase, and the β‐phase has higher photoluminescence efficiency and carrier mobility than the one of α‐phase. Hence, improving the content of β‐phase is very important to enhance the device performance. In this paper, we introduce the methods for characterizing the β‐phase in PFs and summarize the recent research progress in regulating the β‐phase content. Firstly, the differences between the α‐phase and the β‐phase of PFs in terms of structure, aggregation behavior, and optoelectronic properties are summarized. Then, the characterization for the β‐phase, including ultraviolet–visible absorption spectrum (UV–vis), photoluminescence spectrum (PL), and Raman spectrum, transmission electron microscope (TEM), and X‐ray diffraction (XRD) are introduced, and the calculating rules for the content of β‐phase is also introduced. Furthermore, the methods to increase the content of β‐phase are reviewed. Finally, a brief outlook on the challenges and future development prospects of β‐phase in PFs are discussed.

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Insights into the β‐phase of polyfluorene: characterization, regulation, and mechanism

Niu,

Yang,

et al. 2023

Journal of Polymer Science

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One-Step Synthesis of Spirobi[fluorene] and Spiro[fluorene-9,9′-xanthene] Derivatives and Their Applications in Organic Light-Emitting Devices: Performance Enhancement and Related Optical Phenomena

Abstract: GUAN Yu-Qiao et al.: One-Step Synthesis of Spirobi[fluorene] and Spiro[fluorene-9,9′-xanthene] Derivatives No.6

Cited by 1 publication

References 8 publications

Insights into the β‐phase of polyfluorene: characterization, regulation, and mechanism

Insights into the β‐phase of polyfluorene: characterization, regulation, and mechanism

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