Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Crossover Experiments01:16

Crossover Experiments

4.6K
Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in different periods. Crossover experiments are generally used in psychology, the pharmaceutical industry, agriculture, and medicine.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
4.6K
Transfer RNA Synthesis02:36

Transfer RNA Synthesis

13.3K
One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases.
Each of these chemical modifications is carried by a specific enzyme, post-transcription. All of these enzymes have unique base and site-specificity. Methylation, the most common chemical modification, is carried by at least nine different enzymes, with...
13.3K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.2K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
3.2K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.5K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.5K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.5K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.5K
Framing Effects03:26

Framing Effects

7.9K
Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
7.9K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Beyond Passive Substituents: Tosyl-Directed Self-Templation Enables Selective Pillar[4 + 1]arene Formation and Topology Switching.

Journal of the American Chemical Society·2026
Same author

Near-Infrared Luminescence from Transparent Thin Films of Copper(I) Thiocyanate Modified with 2-Mercaptobenzothiazole via Excited-State Symmetry Breaking.

Inorganic chemistry·2026
Same author

Enhanced Cooperative Lithium Halide Recognition by Heteroditopic Halogen Bonding (XB) Macrocycles.

Inorganic chemistry·2025
Same author

Enhanced CO<sub>2</sub>/Epoxide Cycloaddition Catalyzed by Pyridine-Substituted Triazole-Quaternary Ammonium Bromide.

ACS omega·2025
Same author

Influence of a spin crossover iron(iii) complex on the detection of phenylenediamines of graphene-modified screen printed electrodes.

RSC advances·2025
Same author

Single-Atom Tuning of Pyridine-Strapped Pillar[5]arene Capsules for Specific Guest Binding.

Organic letters·2025

相关实验视频

Updated: Jan 29, 2026

Synthesis of Monocyte-targeting Peptide Amphiphile Micelles for Imaging of Atherosclerosis
08:01

Synthesis of Monocyte-targeting Peptide Amphiphile Micelles for Imaging of Atherosclerosis

Published on: November 17, 2017

7.7K

铁中的反向微粒合成和缩小效应 (iii) 旋转交叉材料

Sharon E Lazaro1, Phimphaka Harding2, Upsorn Boonyang3

  • 1Functional Inorganic Materials Laboratory, Department of Chemistry, College of Science, Central Luzon State University Science City of Munoz Nueva Ecija 3120 Philippines.

RSC advances
|January 28, 2026
PubMed
概括

铁 (III) 旋转交叉 (SCO) 纳米材料是使用反向微粒方法合成的. 这些纳米材料表现出可控形状和突然旋转交叉特性,显示出设备集成的潜力.

更多相关视频

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
09:57

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

Published on: December 23, 2016

9.3K
Microwave-driven Synthesis of Iron Oxide Nanoparticles for Fast Detection of Atherosclerosis
08:13

Microwave-driven Synthesis of Iron Oxide Nanoparticles for Fast Detection of Atherosclerosis

Published on: March 22, 2016

11.0K

相关实验视频

Last Updated: Jan 29, 2026

Synthesis of Monocyte-targeting Peptide Amphiphile Micelles for Imaging of Atherosclerosis
08:01

Synthesis of Monocyte-targeting Peptide Amphiphile Micelles for Imaging of Atherosclerosis

Published on: November 17, 2017

7.7K
A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
09:57

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

Published on: December 23, 2016

9.3K
Microwave-driven Synthesis of Iron Oxide Nanoparticles for Fast Detection of Atherosclerosis
08:13

Microwave-driven Synthesis of Iron Oxide Nanoparticles for Fast Detection of Atherosclerosis

Published on: March 22, 2016

11.0K

科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 无机化学 无机化学 有机化学

背景情况:

  • 旋转交叉 (SCO) 材料在响应外部刺激时表现出可切换的旋转状态.
  • 控制SCO纳米材料的形态和磁性特性对于设备应用至关重要.
  • 铁 (III) 复合物是SCO应用的有希望的候选者,因为它们具有调节性质.

研究的目的:

  • 使用反向微粒技术合成和表征铁(III) 旋转交叉 (SCO) 纳米材料.
  • 为了研究状况对SCO纳米材料形态学的影响.
  • 评估合成纳米材料的磁性特性,特别是旋转交叉行为和歇斯底里.

主要方法:

  • 使用二氧化硫酸 (NaAOT) 和作为溶剂系统的逆微粒合成.
  • 新铁 (III) 复合物的合成:[Fe (q) ) 2]NO 3·EtOH.
  • 使用场发射扫描电子显微镜 (FESEM) 进行结构性表征,以确定纳米材料形态.
  • 测量磁性特性以研究旋转交叉过渡和歇斯底里宽度.

主要成果:

  • 控制形成平行图,板状和棒状铁 (III) SCO纳米材料 (分别为[Fe ((qsal) 2]NO3,[Fe ((qsal-I) 2]OTf和[Fe ((qsal-I) 2]NTf).
  • 与散装材料相比,在具有较窄hysteresis的纳米材料中观察到的突然旋转交叉行为.
  • 报告的[Fe(qsal-I) 2OTf (4K) 和[Fe(qsal-I) 2]NTf2 (27K) 纳米材料的特定歇斯底里宽度.

结论:

  • 反向微粒合成是一种可靠的方法,用于生产具有可控形态的铁(III) SCO纳米材料.
  • 合成的纳米材料表现出明显的旋转交叉特性,对设备应用具有潜在的优势.
  • 这项工作推动了SCO纳米材料的开发,以便集成到功能性电子和磁性设备中.