The preparation and luminescence properties of Gd2SiO5:Tb3+@SiO2 core-shell spherical particles

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL Journal of Alloys and Compounds Pub Date : 2024-11-29 DOI:10.1016/j.jallcom.2024.177805

Sikun Hu, Weijun Zhao, Xinyi Huang, Xueni Yang, Jiayi Zhang, Litian Lin, Haiyong Ni, Jiuping Zhong

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引用次数: 0

Abstract

Rare-earth spherical particles (RE-SPs) have garnered significant interest as nanomaterials for biomedical applications due to their high luminescence intensity and tunable luminescence lifetimes. In this study, Tb³⁺-doped Gd₂SiO₅@SiO₂ (GSO: Tb³⁺@SiO₂) core-shell spherical particles were prepared by coprecipitation and Stöber methods. Firstly, the phase transitions and core-shell structures of GSO:Tb³⁺@SiO₂ SPs during preparation were discussed. The obtained core-shell SPs exhibited excellent dispersion and a well-defined spherical morphology with sizes ranging from 250 to 350 nm. Secondly, the luminescence properties of GSO:Tb³⁺@SiO₂ SPs were investigated, delving into the concentration quenching mechanisms of Tb³⁺ ion and the energy transfer (ET) from Gd³⁺ to Tb³⁺ in SPs. Thirdly, the potential biomedical applications of the GSO:Tb³⁺@SiO₂ SPs were evaluated by examining properties such as radioluminescence, luminescence stability and surface charge. The results of present work indicates that the obtained novel spherical particles material with distinct core-shell structures has potential application in X-ray induced photodynamic therapy (X-PDT).

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Gd2SiO5:Tb3+@SiO2核壳球形粒子的制备及其发光性能

稀土球形粒子（RE-SPs）由于其高发光强度和可调的发光寿命而成为生物医学应用的纳米材料。本研究采用共沉淀法和Stöber法制备了Tb3+掺杂Gd2SiO5@SiO2 （GSO: Tb3+@SiO2）核壳球形颗粒。首先，讨论了GSO:Tb3+@SiO2 SPs在制备过程中的相变和核壳结构。获得的核壳SPs具有良好的分散性和明确的球形形貌，尺寸范围为250 ~ 350 nm。其次，研究了GSO:Tb3+@SiO2 SPs的发光特性，探讨了Tb3+离子的浓度猝灭机理以及SPs中Gd3+向Tb3+的能量转移（ET）。第三，通过检测GSO:Tb3+@SiO2 SPs的辐射发光、发光稳定性和表面电荷等性能，对其潜在的生物医学应用进行了评价。本研究结果表明，所获得的具有独特核壳结构的新型球形颗粒材料在x射线诱导光动力治疗（X-PDT）中具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.