相关实验视频

Updated: Jun 25, 2025

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

三级Eu3+晶体复合体具有光发光和三光发光,用于动态应力可视化

Huimin Li¹, Yan Chen¹, Tianyi Wang¹

¹College of Chemistry and Materials Science, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, No. 180 Wusi East Road, Baoding 071002, Hebei, China.

Journal of colloid and interface science

|May 22, 2024

概括

一种基于兰化物的新型晶体复合体,Eu(DBM) 3DETA,表现出明亮的红色光发光 (PL) 和独特的三光发光 (TL) 用于机械能量转换. 这种材料显示了定量压力感知和压力可视化的潜力.

科学领域:

材料科学材料科学材料科学
无机化学无机化学有机化学
纳米技术纳米技术

背景情况:

光发光 (PL) 和三光发光 (TL) 对于机械能量转换至关重要.
现有的PL/TL材料主要是无机的.
开发新的基于有机的发光材料是必不可少的.

研究的目的:

合成一种新的以兰坦化为基础的晶体复合物 (LnCC),具有增强的PL和TL特性.
研究合成材料在机械能量转换和应力感应方面的潜力.
探索相位转换后发光性质的恢复.

主要方法:

通过Eu3+与Dibenzoylmethane (DBM) 和Diethylenetriamine (DETA) 的协同协调,合成了Eu(DBM) 3DETA.
重结晶以获得具有较高 Eu3+ 离子协调数量的块结晶.
研究光发光 (PL) 和发光 (TL) 特性,包括量子产量和对断裂的反应.
周期性晶体到无形相过渡研究,以评估财产恢复.

主要成果:

成功合成了Eu(DBM) 3DETA,一种具有明亮红色辐射的新型LnCC.
实现了高的PL量子收益率 (57.19%) 和独特的TL特性.
证明了裂纹诱导的压电效应导致电荷分离和激发,触发快速的TL反应.
在循环相转换中,在再结晶后观察到原始PL和TL排放强度的恢复.

结论:

由于其明亮的发射和独特的TL特性,DETA为机械能量转换提供了一个有前途的新材料.
材料的断裂诱导的TL反应扩大了定量应力感知和应力可视化的可能性.
可逆相位过渡和特性恢复突出了材料的稳定性和循环应用的潜力.

关键词:

动态压力可视化动态压力可视化基于Eu(3+) 的结晶复合物.手写的签名手写的签名摄影发光效应是一种光照效应.三发光的影子

更多相关视频

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation

Mechanoluminescent Visualization of Crack Propagation for Joint Evaluation

Published on: January 6, 2023

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

相关概念视频

Photoluminescence: Applications

Photoluminescence: Applications

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...

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...

Variables Affecting Phosphorescence and Fluorescence

Variables Affecting Phosphorescence and Fluorescence

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...