相关实验视频

Updated: Jul 15, 2025

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

单组件色调智能有机发射器,具有同时的多阶段刺激响应和多模式发射

Yu Yan¹, Chengfang Liu¹, Jianzhong Fan²

¹State Key Laboratory of Organic Electronics and Information Displays (SKLOEID), Institute of Advanced Materials (IAM), School of Chemistry and Life Sciences, Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.

Research (Washington, D.C.)

|October 2, 2023

概括

这项研究介绍了一种新型的单元有机发射器 (DDOP),具有可调色,多阶段响应的排放. 这一突破使先进的光电子应用,如信息加密和视觉监控成为可能.

科学领域:

材料科学材料科学材料科学
有机电子有机电子
光物理学的光学物理学

背景情况:

具有可调节的发射和刺激响应的单元有机发射器对于先进的光电子技术至关重要.
在单个有机分子中同时实现多阶段的刺激反应和多模式排放是一个重大挑战.

研究的目的:

开发一种新的单元有机发射器,具有可调色的发射和多阶段的刺激响应.
探索分子聚合状态和排放特性之间的关系.

主要方法:

合成一种具有扭曲的捐赠者-接受者-捐赠者结构的新型有机发射物 (DDOP).
对光物理性质的研究,包括依赖激发和依赖聚合状态的排放.
在原始晶体粉末和单晶体中排放行为的表征.

主要成果:

在晶体粉末中,DDOP表现出异常的激发依赖性排放,从蓝色 (470 nm) 转变为黄色 (550 nm),随着紫外线激发波长的减少.
在不同的激发波长下,DDOP单晶具有广泛的发射频段,在585nm达到峰值.
在晶体粉末和单晶之间观察到不同的排放行为,突出显示聚合状态的影响.

结论:

成功开发了一种新型的单元有机发射器 (DDOP),证明了可调色的发射和多阶段的刺激反应.
这些发现揭示了聚合状态在控制排放性质方面的关键作用.
这项工作为智能光电子应用铺平了道路,例如多层次信息加密和多色发射模式.

更多相关视频

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes

Published on: November 15, 2016

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

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...