在水溶液中具有室温长余辉的碳点基纳米颗粒

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-10-02 DOI:10.1016/j.matlet.2025.139610

Yijie Zhong , Yikai Chen , Lijun Xie , Jianping Yang , Chaofan Hu , Qingqing Liu

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引用次数: 0

摘要

本文采用水热法合成了氮掺杂碳点（NCDs）。这些NCDs随后通过溶胶-凝胶工艺掺入二氧化硅纳米颗粒中，得到基于cds的室温磷光（RTP）材料。结构表征表明，复合材料内部的氢键网络和共价键有效地屏蔽了三重态激子的猝灭。此外，复合纳米颗粒表面丰富的硅烷醇基团使其具有良好的水溶性。这种协同效应使材料在水溶液中表现出2.63 s的超长磷光寿命（肉眼大于29 s）。我们的工作为开发长寿命水性RTP碳点材料提供了一种可行的策略。

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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Carbon dots-based nanoparticles with room-temperature long afterglow in aqueous solution

In this work, nitrogen-doped carbon dots (NCDs) were synthesized via a hydrothermal method. These NCDs were subsequently incorporated into silica nanoparticles using a sol-gel process, yielding CDs-based room-temperature phosphorescent (RTP) materials. Structural characterization revealed that the hydrogen-bonding network and covalent bonds within the composite effectively shield the triplet excitons from quenching. Additionally, the abundant surface silanol groups endow the composite nanoparticles with excellent water solubility. This synergistic effect enables the material to exhibit an ultra-long phosphorescence lifetime of 2.63 s (more than 29 s to the naked eye) in aqueous solution. Our work offers a viable strategy for developing long-lived aqueous RTP carbon dot materials.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive