Er³⁺/Yb³⁺ co-doped bioactive glasses with up-conversion luminescence prepared by containerless processing

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• 作者：Qin Li^a ; ^{liqin@mail.sic.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Min Xing^a ; Zhi Chen^b ; Xiaoya Wang^a ; Cancan Zhao^a ; Jianrong Qiu^b ; Jianding Yu^a ; ^{yujianding@mail.sic.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Jiang Chang^a ; ^{jchang@mail.sic.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Up-conversion luminescence ; Bioactive glasses ; Bioactivity ; Containerless processing
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：15 August 2016
• 年：2016
• 卷：42
• 期：11
• 页码：13168-13175
• 全文大小：2258 K

文摘

Er³⁺/Yb³⁺ co-doped bioactive glasses were prepared via containerless processing in an aerodynamic levitation furnace. The as-prepared glasses were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) equipped with energy dispersive X-Ray spectroscopy (EDX). The up-conversion luminescence of as-prepared glasses was measured using an Omni- 3007 spectrometer. Furthermore, the in vitro bioactivity was evaluated by soaking the materials in simulated body fluid, and the biocompatibility was evaluated in MC3T3-E1 cell culture.

The results show that containerless processing is a unique method to prepare homogeneous rare earth doped bioactive glasses. The obtained Er³⁺/Yb³⁺ co-doped glasses show green and red up-conversion luminescence at the excitation of 980 nm laser. The XRD analysis confirmed that calcium silicate powders, as starting materials, were completely transformed from the original multi-crystalline phase (CS-P) into the amorphous-glassy phase (CS-G, EYS, LCS) via containerless processing. The SEM observation combined with EDX and FTIR analyses showed that the as-prepared glasses were bioactive. The cell proliferation assay also revealed that the as-prepared glasses were biocompatible and nontoxic to MC3T3-E1 cells. This study suggests that the luminescent bioactive glasses prepared by containerless processing could be used for studying biodegradation of bone implantation materials.