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Exploring electronic coupling effects in amorphous polymers for multi-color persistent room-temperature phosphorescence

调控分子间的电子耦合效应实现多彩超长有机室温 磷光

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Abstract

Organic persistent room-temperature phosphorescence (RTP) polymers with exceptional processability, flexibility, and reproducibility exhibit great potential in various optoelectronic applications. However, it is still a challenge to achieve full-color RTP. In this study, we present a novel strategy for achieving multi-color phosphorescence in amorphous polymers by controlling the intermolecular electronic coupling among triphenylphosphine salts in a polyvinyl alcohol matrix. Notably, tunable phosphorescence colors ranging from deep blue to red are achieved. Both experimental and theoretical results have demonstrated that the inter-molecular electronic coupling among doping molecules is indeed responsible for wide-range room-temperature phosphorescence color tuning. Furthermore, these polymers have been successfully utilized in multi-color displays, including flexible three-dimensional objects and anti-counter-feiting tags.

摘要

有机超长室温磷光聚合物因其优异的可加工性、灵活性和可重 复性等特点, 在各种光电应用中表现出巨大的应用潜力. 然而, 实现全 彩的室温磷光仍然是一个挑战. 在本文中, 我们通过在聚乙烯醇中掺杂 不同浓度的三苯基膦盐, 成功制备了一系列余晖颜色可调的有机室温 磷光聚合物(从蓝色到红色). 实验和理论计算证明: 室温磷光聚合物颜 色的宽范围调控归因于掺杂体膦盐分子间的电子耦合作用大小. 此外, 这些多彩的磷光聚合物可应用于柔性3D显示和防伪.

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Acknowledgements

This work was supported by the National Funds for Distinguished Young Scientists (61825503) and the National Natural Science Foundation of China (62288102, 62205277 and 62322508).

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Authors and Affiliations

  1. State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications (NUPT), Nanjing, 210023, China

    Pengfei She  (佘鹏飞), Jiayu Duan  (段嘉宇), Yuxiang Zhou  (周宇翔), Yanyan Qin  (秦妍妍), Juan Wei  (魏娟), Shujuan Liu  (刘淑娟), Yun Ma  (马云) & Qiang Zhao  (赵强)

  2. Department of Applied Biologyand Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China

    Pengfei She  (佘鹏飞)

  3. Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, 518057, China

    Pengfei She  (佘鹏飞)

  4. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212100, China

    Feiyang Li  (李飞阳)

  5. College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices, Nanjing University of Posts and Telecommunications (NUPT), Nanjing, 210023, China

    Qiang Zhao  (赵强)

Authors
  1. Pengfei She  (佘鹏飞)
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  2. Jiayu Duan  (段嘉宇)
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  3. Feiyang Li  (李飞阳)
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  7. Shujuan Liu  (刘淑娟)
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  8. Yun Ma  (马云)
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  9. Qiang Zhao  (赵强)
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Contributions

Author contributions She P, Ma Y and Zhao Q conceived the idea for this work and designed the experiments. Duan J and Zhou Y performed the syntheses and measured the photophysical property. Li F performed the theoretical simulation. Qin Y and Wei J contributed to the implementation of the experiments and the measurements. She P wrote the manuscript. Liu S, Ma Y and Zhao Q revised the manuscript and provided some suggestions. All authors discussed the results and commented on the manuscript.

Corresponding authors

Correspondence to Yun Ma  (马云) or Qiang Zhao  (赵强).

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Conflict of interest The authors declare that they have no conflict of interest.

Additional information

Supplementary information Supporting data are available in the online version of the paper.

Yun Ma obtained his PhD degree from Hong Kong Baptist University in 2015 under the supervision of Prof. Wai Yeung Wong. He is currently a full professor at Nanjing University of Posts and Telecommunications. His research focuses on the development of stimuli-responsive materials for advanced optical applications.

Qiang Zhao received his PhD degree in 2007 from Fudan University. He then became a postdoctoral fellow at Nagoya University, Japan. He joined Nanjing University of Posts & Telecommunications in 2008. He was promoted as a full professor in 2010. His research area is organic optoelectronics, including the design, synthesis and excited-state tuning of organic semiconductors for applications in optoelectronic devices

Electronic supplementary material

40843_2023_2651_MOESM1_ESM.pdf

Supporting Information: Exploring Electronic Coupling Effects in Amorphous Polymers for Multi-Color Persistent Room-Temperature Phosphorescence

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She, P., Duan, J., Li, F. et al. Exploring electronic coupling effects in amorphous polymers for multi-color persistent room-temperature phosphorescence. Sci. China Mater. 66, 4749–4755 (2023). https://doi.org/10.1007/s40843-023-2651-6

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  • DOI: https://doi.org/10.1007/s40843-023-2651-6

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