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A series of highly quantum efficiency PMMA luminescent films doped with Eu-complex as promising light-conversion molecular devices

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Abstract

In this paper, a series of Eu/PMMA and Eu/PMMA/SiO2 luminescent films have been designed, fabricated and characterized. Thermo-gravimetric analysis and photo-luminescence results indicated the Eu-complex precursor was successfully immobilized in PMMA matrix through the interaction between the Eu-complex and the –C=O groups of the PMMA matrix. The emission spectra of the Eu-complex and Eu/PMMA films recorded at 25 °C exhibited the characteristic bands arising from the 5D0/7FJ. The fact that the quantum efficiencies (η) of the doped film increased significantly indicated that PMMA matrix acted as an efficient co-sensitizer for Eu3+ ions luminescent center, and therefore enhanced the η of the emitter 5D0 level. Especially, with the doping nano-SiO2 into Eu/PMMA-5 % system, the T d-5 % of Eu/PMMA/SiO2 has obviously improved. Due to the carrying effect of nano-SiO2 and interaction between –C=O of PMMA chain and Eu3+ ions, the η of Eu/PMMA/SiO2 films have been greatly enhanced. To the best of our knowledge, the η of Eu/PMMA/SiO2-3 % film (78.57 %) is found to be the highest so far reported in the literature. These Eu/PMMA/SiO2 luminescent films show excellent luminescent properties and therefore have potential applications in light-conversion molecular device.

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Acknowledgments

This work is financially supported by the National Natural Science Foundation of China (No. 21404017), and the Chongqing Science and Technology Innovation Capacity Building Project (Project No. cstc2013kjrc-qnrc50003).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Chongqing University of Technology, Chongqing, 400054, China

    Chaolong Yang, Hualin Zhou, Youbing Li, Jian He & Qiang Zhang

  2. Key Laboratory of Polymer Materials for Electronics, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650, China

    Chaolong Yang & Mangeng Lu

  3. Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki-Azaaoba 6-3, Aoba-ku, Sendai, Japan

    Jing Xu

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  1. Chaolong Yang
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Correspondence to Chaolong Yang.

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Yang, C., Zhou, H., Xu, J. et al. A series of highly quantum efficiency PMMA luminescent films doped with Eu-complex as promising light-conversion molecular devices. J Mater Sci: Mater Electron 27, 11284–11292 (2016). https://doi.org/10.1007/s10854-016-5251-5

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