用于近红外激发和发射的掺钕nasicon型纳米荧光粉

IF 2.2 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Asian Ceramic Societies Pub Date : 2023-03-15 DOI:10.1080/21870764.2023.2186842

Mizuki Watanabe, M. Itoh, Ryohei Oka, S. Ida, Toshiyuki Masui

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引用次数: 0

摘要

采用共沉淀法合成了掺钕磷酸盐(Nd1-x Gd x)0.33Zr2(PO4)3(0≤x≤1)。得到(Nd1-x Gd x)0.33Zr2(PO4)3为单相结构，确定为由PO4四面体与ZrO6八面体共角的三维网络组成的nasicon型结构。(Nd1-x Gd x)0.33Zr2(PO4)3样品的粒径为纳米级，适合体内光学成像。(Nd1-x Gd x)0.33Zr2(PO4)3样品显示出与Nd3+的f - f跃迁相对应的特征发光。(Nd0.75Gd0.25)0.33Zr2(PO4)3在1072 nm处的发射强度最高，激发波长为824 nm，是Nd0.33Zr2(PO4)3的4.5倍。该纳米荧光粉的近红外(NIR)发射强度明显高于吲哚菁绿，实际用作体内光学探针试剂。

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Nd-doped NASICON-type nanophosphors for near-infrared excitation and emission

ABSTRACT Neodymium-doped phosphates, (Nd1-x Gd x )0.33Zr2(PO4)3 (0 ≤ x ≤ 1), were synthesized by co-precipitation. (Nd1-x Gd x )0.33Zr2(PO4)3 was obtained as a single-phase and was confirmed to be a NASICON-type structure consisting of a three-dimensional network of PO4 tetrahedra sharing corners with ZrO6 octahedra. The particle size of the (Nd1-x Gd x )0.33Zr2(PO4)3 samples was in the nanoscale, which is suitable for in vivo optical imaging. The (Nd1-x Gd x )0.33Zr2(PO4)3 samples showed characteristic luminescence corresponding to the f – f transitions of Nd3+. The highest emission intensity at 1072 nm with excitation at 824 nm was observed for (Nd0.75Gd0.25)0.33Zr2(PO4)3, which was 4.5 times higher than that of Nd0.33Zr2(PO4)3. The near-infrared (NIR) emission intensity of this nanophosphor was significantly higher than that of indocyanine green, which is actually used as an in vivo optical probe reagent.

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来源期刊

Journal of Asian Ceramic Societies Materials Science-Ceramics and Composites

CiteScore

5.00

自引率

4.30%

发文量

审稿时长

10 weeks

期刊介绍： The Journal of Asian Ceramic Societies is an open access journal publishing papers documenting original research and reviews covering all aspects of science and technology of Ceramics, Glasses, Composites, and related materials. These papers include experimental and theoretical aspects emphasizing basic science, processing, microstructure, characteristics, and functionality of ceramic materials. The journal publishes high quality full papers, letters for rapid publication, and in-depth review articles. All papers are subjected to a fair peer-review process.