相关实验视频

Updated: May 5, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

用于可溶液处理的光学和有机电阻式存储器具有可光控制的电子传输性能的含有3-基乙烯的光敏复合物

Cheok-Lam Wong¹, Maggie Ng¹, Eugene Yau-Hin Hong¹

¹Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.

Journal of the American Chemical Society

|July 3, 2020

概括

研究人员开发了具有可调节光色特性的新型光敏 (Alq3) 复合物. 这些材料表现出增强的电子传输,并使可光控制的内存设备成为可能,这标志着光电子技术的重大进步.

科学领域:

材料科学
有机电子
摄影化学

背景情况:

(Tris8-hydroxyquinolinato) (III) (Alq3) 是有机电子产品中广泛使用的材料.
对于先进的电子应用来说,开发光敏材料至关重要.
用光调节材料特性提供了新的设备功能.

研究的目的:

设计和合成新的光反应性Alq3复合物.
研究光色单元对Alq3特性的影响.
展示可光控制的电子传输和记忆装置.

主要方法:

将光色滴乙烯单元纳入 Alq3 框架.
光环化反应来调节材料的特性.
纯电子设备和电阻式内存设备的制造和表征.

主要成果:

成功合成了具有可调节光色行为的 Alq3 复合体.
实现了增强的电子传输特性和可光交换的电子流动性.
具有可光控制的二进制内存行为,高开/关比和长时间保留的可处理电阻式内存设备.

结论:

这项工作介绍了第一个基于Alq3的光响应电子传输材料.
开发了可处理溶液的基于Alq3的光学和电阻式内存设备,具有可光控制的性能.
合理设计策略为未来的光响应有机电子材料提供了途径.

更多相关视频

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

Published on: May 31, 2018

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

相关概念视频

The Retina

The Retina

The retina is a layer of nervous tissue at the back of the eye that transduces light into neural signals. This process, called phototransduction, is carried out by rod and cone photoreceptor cells in the back of the retina.

Photoreceptors and Plant Responses to Light

Photoreceptors and Plant Responses to Light

Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.

Photosystems

Photosystems

Photosystems are multiprotein complexes that form the functional units of photosynthesis in plants, algae, and cyanobacteria. They are found embedded in the membrane of tiny sac-like structures called thylakoids placed inside the chloroplast.
Functioning of Photosystems
Photosystems contain many pigment molecules, such as chlorophylls and carotenoids, arranged in a particular organization across two domains — the antenna complex and the reaction center. The main aim of the pigment...

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.

Photochemical Electrocyclic Reactions: Stereochemistry

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation

Photoreceptors and Visual Pathways

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...