在自组装的有机纳米粒子中映射禁止排放到结构中
Daniel A Hinton1, James D Ng1, Jian Sun2
1Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53705 , United States.
Journal of the American Chemical Society
|October 30, 2018
概括
螺旋功能化二甲基 (BODIPY) 自组合成具有独特发射特性的纳米粒子. 它们的二维层结构解释了不寻常的光物理,
科学领域:
- 有机电子材料
- 超分子化学
- 光物理学
背景情况:
- 材料结构与电子特性之间的关系对于有机电子非常重要.
- 二甲基 (BODIPY) 衍生物是有前途的有机电子材料.
- 自组装提供了一种控制材料形态和属性的途径.
研究的目的:
- 为了研究螺旋功能化的BODIPY衍生物的自组装.
- 描述产生的纳米粒子的独特发射特性.
- 阐明所观察到的光物理学的结构属性关系.
主要方法:
- 用基诺博尼尔尾部合成基功能化的BODIPY.
- 通过自组装形成纳米粒子.
- 广泛的光物理特征:单粒子成像和光谱,时间分辨率光.
- 基于实验确定的晶体结构的电子结构计算.
主要成果:
- 与聚合物相比,自我组装产生具有独特特性的纳米粒子.
- 观察到独特的发射特性:光亮,蓝色卫星峰值,光谱扩散.
- 根据堆叠,BODIPY染色体形成具有J或H聚合特征的准二维层.
- 强烈的H-合域表现出罕见的高激子状态的发射, 违反了卡沙的规则.
- 空间和时间结构异质性与光物理行为相关.
结论:
- 该研究表明BODIPY衍生物的自组纳米结构与其电子/发射性质之间存在直接联系.
- 观察到的现象,包括违反卡沙规则,为有序有机物质的激子动态提供了洞察力.
- 这一系统是通过有机电子的结构设计来理解和控制光物理行为的一个模型.
相关概念视频
Assembly of Complex Microtubule Structures
2.5K
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
2.5K
Structure and Organization of Smooth Muscles
8.7K
Smooth muscle tissue is a type of muscle tissue that can be found lining various vital organs in the human body, including the lungs, blood vessels, digestive tract, and respiratory tract. This type of tissue is responsible for regulating the movements of these organs, playing crucial roles in the functioning of various systems, including the vascular, digestive, respiratory, and urinary systems.
Structure of smooth muscle cell
Smooth muscle cells are spindle-shaped with tapering ends and a...
Structure of smooth muscle cell
Smooth muscle cells are spindle-shaped with tapering ends and a...
8.7K
Prokaryotic Gene Structure and Organization
2.1K
Prokaryotic genomes exhibit a streamlined organization of coding and non-coding regions essential for gene expression and protein synthesis. While coding regions contain the genetic instructions for proteins or functional RNAs, non-coding regions regulate the precise transcription and translation of these genes.Coding Regions: Proteins and RNAsThe primary coding regions, known as structural genes, include sequences transcribed into messenger RNA (mRNA) and ultimately translated into...
2.1K
Emission Spectra
76.3K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
76.3K
Structural Organization of the Human Body: An Overview
28.3K
It is convenient to consider the body's structures in terms of fundamental levels of organization that increase in complexity: subatomic particles, atoms, molecules, organelles, cells, tissues, organs, organ systems, and organisms.
To study the chemical level of organization, scientists consider the simplest building blocks of matter: subatomic particles, atoms, and molecules. All matter in the universe is composed of one or more unique pure substances called elements, familiar examples of...
To study the chemical level of organization, scientists consider the simplest building blocks of matter: subatomic particles, atoms, and molecules. All matter in the universe is composed of one or more unique pure substances called elements, familiar examples of...
28.3K
Structural Protein Function
30.0K
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to...
30.0K


