来自第一原理的响应光的有机极子
Xiongwei Guo1, Xinlu Cheng1, Hong Zhang2
1Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China. chengxl@scu.edu.cn.
Physical chemistry chemical physics : PCCP
|August 21, 2023
概括
研究人员使用光学空洞来控制对光敏感的有机分子,修改它们的光学特性. 强大的光物质合使得光谱特征的切换和自发辐射的控制成为可能,为光子学操纵提供了新的途径.
科学领域:
- 光子学 是一个光子学.
- 有机化学 有机化学
- 量子光学是一种量子光学.
背景情况:
- 控制有机分子的光学特性对于光子学至关重要.
- 响应光的有机分子,如跨和四甲 (H2TPP),是关键的组成部分.
研究的目的:
- 为了证明光学腔内的光响应有机极子的使用,以修改分子光学特性.
- 为了研究薄弱到强烈的光物质合对分子行为的影响.
主要方法:
- 第一个原则计算被用来研究分子行为.
- 在不同合强度下模拟了对跨-和H2TPP的光腔效应.
主要成果:
- 已经证明,光学腔调节有机分子的分散和吸收特性.
- 通过空腔抑制了跨-亚的异常分散,随着合强度的增加,抑制下降.
- 在Lorentz和Fano线形之间切换H2TPP极子是通过调整光物质合来实现的.
- 普塞尔效应被用来控制有机分子的自发辐射.
结论:
- 光学腔提供了一种方法来操纵有机分子的光学二极管陷.
- 强烈的光物质合提供了对分子光谱特征和辐射的显著控制.
- 这项研究为光子应用提供了一种用于控制光敏有机分子光学性质的新方法.
相关概念视频
Potential Due to a Polarized Object
434
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
434
Photoreceptors and Visual Pathways
6.1K
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,...
6.1K
The Wave Nature of Light
49.3K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
49.3K
Group Polarization
34.3K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
34.3K
The Z-Scheme of Electron Transport in Photosynthesis
10.2K
The light reactions of photosynthesis assume a linear flow of electrons from water to NADP+. During this process, light energy drives the splitting of water molecules to produce oxygen. However, oxidation of water molecules is a thermodynamically unfavorable reaction and requires a strong oxidizing agent. This is accomplished by the first product of light reactions: oxidized P680 (or P680+), the most powerful oxidizing agent known in biology. The oxidized P680 that acquires an electron from the...
10.2K
Photoluminescence: Fluorescence and Phosphorescence
2.1K
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...
A pair of electrons in a...
2.1K


