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Near-white light luminescent material from Eu(III) complexes encapsulated in silica/PMMA matrices

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Abstract

A novel ternary molecular hybrid material has been obtained by immobilization of Eu-Salen complex into silica matrix and poly (methyl methacrylate) (PMMA) matrix. Here, the Salen-type Schiff-base ligand H2Salen (N,N′-bis(salicylidene)ethylenediamine) which has been successfully modified by 3-(triethoxysilyl)-propyl isocyanate (TESPIC) has been used as a flexible linker and the antenna. The obtained solid hybrid material shows not only the characteristic red emission of Eu3+ but also the blue emission of Salen-Si host arising from the inefficient energy transfer from antenna to Eu3+, leading to the unexpected near-white light color of the material. For comparison, the binary hybrid without PMMA has also been prepared. Photoluminescent spectra suggest that the introduction of PMMA can enhance the emission intensity whereas the chromaticity nearly has not been changed. Moreover, thermal analysis has revealed the good thermal stability of the ternary hybrid material. X-ray diffraction patterns demonstrate the amorphous structure of both hybrid materials.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (21101107), the Science Foundation for the Excellent Youth Scholars of Shanghai Municipal Education Commission (Slg10031) and the innovation Fund of Shanghai (SH1110252164).

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Authors and Affiliations

  1. School of Aeronautics, Shandong Jiao Tong University, Jinan, 250357, People’s Republic of China

    Kai Sheng

  2. School of Material Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People’s Republic of China

    Hua-Ti Li, Zhao Jin & Ying Li

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  1. Kai Sheng
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  2. Hua-Ti Li
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  3. Zhao Jin
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  4. Ying Li
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Correspondence to Kai Sheng or Ying Li.

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Sheng, K., Li, HT., Jin, Z. et al. Near-white light luminescent material from Eu(III) complexes encapsulated in silica/PMMA matrices. J Mater Sci: Mater Electron 25, 4562–4567 (2014). https://doi.org/10.1007/s10854-014-2204-8

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  • DOI: https://doi.org/10.1007/s10854-014-2204-8

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