Morphology evolution and NIR-II luminescence enhancement in LaF3:Er3+ nanoparticles

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2025-04-10 DOI:10.1016/j.saa.2025.126198

Puyan Hao, Tingting Li, Jiahui Ren, Rui Zhu, Mengzhen Jia, Yu Dong, Mandong Zhai, Xinyu Song, Xiaoqi Zhao

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引用次数: 0

Abstract

Luminescence imaging in the second near-infrared (NIR-II) window (1000–1700 nm) has attracted extensive attention in recent years owing to its superior tissue penetration ability and weak spontaneous fluorescence effects in biological tissues. However, an important bottleneck restricting the development of NIR-II luminescence imaging technology is the lack of nanoprobes with suitable morphology, particle size and high luminescence intensity. In this work, NIR-II emitted LaF₃:Er³⁺ nanoparticles (NPs) were synthesized by a simple chemical precipitation method, where the size and morphology of LaF₃:Er³⁺ NPs were precisely controlled through the regulation of reaction conditions. The NIR-II luminescence of Er³⁺ was effectively enhanced for 8.4 times by Zr⁴⁺ doping. The results provides useful reference for the research of NIR-II luminescent imaging nanoprobes.

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LaF3:Er3+纳米颗粒的形态演化和NIR-II发光增强

近红外第二窗口（NIR-II）（1000-1700 nm）由于其在生物组织中具有优异的组织穿透能力和较弱的自发荧光效应，近年来引起了广泛的关注。然而，限制NIR-II发光成像技术发展的一个重要瓶颈是缺乏合适的形貌、粒径和高发光强度的纳米探针。本文采用简单的化学沉淀法合成了NIR-II发射的LaF3:Er3+纳米粒子（NPs），通过调节反应条件，精确控制了LaF3:Er3+纳米粒子的大小和形态。Zr4+的掺杂使Er3+的NIR-II发光有效增强了8.4倍。研究结果为NIR-II发光成像纳米探针的研究提供了有益的参考。

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.