Effects of thermal treatment on the structure and luminescent properties of Eu3+ doped SiO2-PMMA hybrid nanocomposites prepared by a sol-gel process
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- 作者：Filipe Augusto de Jesusa ; Simei Tarse Sobrinho Santosa ; José ; Maurí ; cio Almeida Caiutb ; Victor Hugo Vitorino Sarmentoa ; vhsarmento@ufs.br" class="auth_mail" title="E-mail the corresponding author
- 关键词：Hybrid nanocomposites ; Thermal treatment ; Eu3+ ions ; Luminescence
- 刊名：Journal of Luminescence
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：170
- 期：part_P2
- 页码：588-593
- 全文大小：656 K
文摘
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Eu3+-doped SiO2–PMMA hybrid nanocomposites were synthesized through a sol–gel process.
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FTIR, NMR and TG techniques were used to structural characterization of the material.
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Luminescence analysis showed changes in Eu3+ coordination sphere caused by thermal treatments.
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Thermal treatments increase the interaction between the lanthanide ions and the host.
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There was a huge improvement in the quantum efficiency of Eu3+ in heat treated sample.