相关实验视频
Updated: Jun 24, 2025

07:03
Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
10.7K
具有高效近红外发射的多功能,基于反-化物
Tao Huang1,2, ZiXuan Wang1, Tongzhou Li1
1State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures; School of Resources, Environmental and Materials, Guangxi University, Nanning 530004, China.
ACS applied materials & interfaces
|June 10, 2024
概括
研究人员开发了新的有机-无机混合金属化物材料,用于高效的近红外 (NIR) 发射. 这些提供高光发光量子产量和稳定性,可用于夜视和医学成像.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 光物理学的光学物理学
背景情况:
- 基于金属化物的宽带近红外 (NIR) 发光材料往往遭受复杂的合成,高成本,低量子产量和高激发能量要求.
- 开发稳定高效的NIR发射器对于先进的技术应用至关重要.
研究的目的:
- 合成和描述具有高效宽带NIR发射的新型有机-无机混合金属化物材料.
- 调查NIR发射的来源,并评估材料的稳定性和潜在的应用.
主要方法:
- 在 (C20H20P) 2ZnCl4晶体中加入Sb3+和Br-离子.
- 光发光谱学用于分析辐射波段和量子产量.
- 五秒短暂吸收光谱和密度功能理论 (DFT) 计算以阐明排放机制.
主要成果:
- 在400nm激发下实现了有效的宽带NIR发射范围为550-1050nm.
- 获得了93.57%的高光发光量子产量.
- 合成化合物的环境和热稳定性证明是令人满意的.
结论:
- 合成的有机-无机混合金属化物表现出具有开创性的NIR发光特性.
- NIR发射归因于[SbX5]2-物种,通过光谱和理论分析证实了这一点.
- 开发的显示出在夜视,医学成像和防伪技术方面的应用潜力显著.
相关概念视频
Photoluminescence: Applications
387
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
387
Variables Affecting Phosphorescence and Fluorescence
497
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
497

