相关实验视频
Updated: Jul 19, 2026

08:02
Phospholipid Mediator Induced Transformation in Three-Dimensional Cultures
Published on: July 27, 2022
在M3L2亚氨酸子子中的基质自我歧视
Christian G Claessens1, Tomás Torres
1Departamento de Química Orgánica, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049 Madrid, Spain. christian.claessens@uam.es
Journal of the American Chemical Society
|December 6, 2002
概括
一种性亚甲氨酸 (SubPc) 分解成一个M3L2,显示出对等分子之间的自我歧视. 这种超分子组合选择性地只形成了四种可能的同位素之一.
科学领域:
- 超分子化学 超分子化学
- 协调化学 协调化学
- 有机化学 有机化学
背景情况:
- 亚酸 (SubPc) 是宏环化合物,在材料科学中具有潜在的应用.
- C3对称分子具有独特的结构和识别特性.
- 在自组装系统中,形识别对于开发先进材料至关重要.
研究的目的:
- 为了研究一个C3对称亚酸 (SubPc) 的tris(3-pyridyl) 替代C3的二元化.
- 探索M3L2子形成过程中的性自我歧视.
- 为了确定自组装过程的异构特异性.
主要方法:
- 合成一个C3对称的三3-甲基) 替代C3的亚甲.
- 使用 (en) Pd 积分数量 (NO3) 2 构成一个M3L2 的子Pc 的二元化.
- 核磁共振 (NMR) 谱学分析自组合和性识别.
主要成果:
- 成功地将SubPc二元化成一个M3L2子.
- 核磁共振研究显示,在子形成过程中,SubPc的两个反体之间存在着性自我歧视.
- 自组装过程显示出高同位素特异性,只产生四种可能的同位素之一.
结论:
- 在C3对称的SubPc可以经历在M3L2子中二元化后的奇拉性自我歧视.
- 超分子的形成高度特异,导致单个异构体.
- 这项研究突出了基于SubPc的系统在受控自组装和手术识别方面的潜力.
相关概念视频
Stereotypes, Prejudice, and Discrimination
Humans are very diverse and although we share many similarities, we also have many differences. The social groups we belong to help form our identities (Tajfel, 1974). These differences may be difficult for some people to reconcile, which may lead to prejudice toward people who are different. Prejudice is a negative attitude and feeling toward an individual based solely on one’s membership in a particular social group (Allport, 1954; Brown, 2010). Prejudice is common against people who are...
Stereotype Content Model
The Stereotype Content Model (SCM) was first proposed by Susan Fiske and her colleagues (Fiske, Cuddy, Glick & Xu, 2002; see also Fiske, 2012 and Fiske, 2017). The SCM specifies that when someone encounters a new group, they will stereotype them based on two metrics: warmth—or that group’s perceived intent, and how likely they are to provide help or inflict harm—and competence—or their ability to carry out that objective. Depending on the warmth-competence categorization, a person will feel...
Stereotype Threat and Self-fulfilling Prophecies
When we hold a stereotype about a person, we have expectations that he or she will fulfill that stereotype. A self-fulfilling prophecy is an expectation held by a person that alters his or her behavior in a way that tends to make it true. When we hold stereotypes about a person, we tend to treat the person according to our expectations. This treatment can influence the person to act according to our stereotypic expectations, thus confirming our stereotypic beliefs. Research by Rosenthal and...
The Y Chromosome Determines Maleness
The Y chromosome is a sex chromosome found in several vertebrates and mammals, including humans. In addition to 22 pairs of autosomes, the human males have one X chromosome and one Y chromosome. In these organisms, the presence or absence of the Y chromosome determines the development of male traits.
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Evolution
Around 300 million years ago, the two sex chromosomes diverged from two identical autosomal chromosomes. Over time, the Y chromosome has lost most of its genes, shrinking in size. Today,...
Basicity of Aliphatic Amines
Amines can behave as Brønsted–Lowry bases by accepting a proton from the acid to form corresponding conjugate acids. Due to a lone pair of nonbonding electrons, aliphatic amines can also act as Lewis bases by forming a covalent bond with an electrophile.
To measure the basicity of amines, two conventions are generally used. The first defines Kb as the basicity constant for the deprotonation reaction of water by the amine, as presented in Figure 1. Conventionally, lower Kb indicates higher...
To measure the basicity of amines, two conventions are generally used. The first defines Kb as the basicity constant for the deprotonation reaction of water by the amine, as presented in Figure 1. Conventionally, lower Kb indicates higher...
Social Foundations of Self II: The Generalized Other
According to George Herbert Mead, as children progress beyond the game stage, they develop a more comprehensive understanding of societal rules and norms. This cognitive and social development enables them to internalize the expectations of the broader community, refining their ability to regulate behavior.Consistent participation in organized activities is crucial in helping children recognize that their actions are not isolated but contribute to a more significant, interconnected group effort.

