Heterogenous Core-Shell Persistent Luminescent Nanoparticles with Enhanced Afterglow Luminescence.

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-09-13 DOI:10.1021/acs.nanolett.4c02295

Chung Yin Tsang,Jinliang Liu,Hwa Liang Leo,Yong Zhang

引用次数: 0

Abstract

Persistent luminescent nanoparticles (PLNPs) are promising for many bioapplications due to their unique afterglow luminescence following the stoppage of light excitation. However, PLNPs are prone to surface quenching that results in weak afterglow luminescence. Although some efforts have been made to reduce surface quenching through designing homogeneous core-shell PLNPs, the enhancement in afterglow luminescence was insignificant. We hypothesize that the independent absorption and emission of the shell caused less energy to reach the activator ions in the core. Hence, a heterogeneous core-shell PLNP where the shell has a higher band gap than the core would reduce the absorption and emission of the shell. In this work, ZnGa2O4 and Zn2GeO4 were coated on Zn1.2Ga1.6Ge0.2O4:Cr and Zn3Ga2Ge2O10:Eu nanocrystals, respectively, to form heterogeneous core-shell PLNPs and significant luminescence enhancement was achieved compared to their traditional homogeneous core-shell nanostructures.

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具有增强余辉发光功能的异质核壳持久发光纳米粒子。

持久发光纳米粒子（PLNPs）在光激发停止后会发出独特的余辉，因此在许多生物应用中大有可为。然而，PLNPs 容易发生表面淬火，导致余辉发光微弱。尽管人们通过设计均质核壳 PLNPs 来减少表面淬火，但对余辉发光的增强效果并不明显。我们假设，壳的独立吸收和发射导致到达核中激活剂离子的能量较少。因此，在异质核壳 PLNP 中，如果壳的带隙比核的带隙高，就会减少壳的吸收和发射。在这项研究中，ZnGa2O4 和 Zn2GeO4 分别被涂覆在 Zn1.2Ga1.6Ge0.2O4:Cr 和 Zn3Ga2Ge2O10:Eu 纳米晶体上，形成了异质核壳 PLNP，与传统的同质核壳纳米结构相比，它们的发光效果显著增强。

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

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.

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