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

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR01:15

¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR

1.1K
The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.
1.1K

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

Floatable chitosan-based cryogels embedded with copper nanoparticles as efficient and reusable heterogeneous catalysts for hydrogenation of 4-nitrophenol.

International journal of biological macromolecules·2026
Same author

Sulfonated Poly(Ether Ether Ketone)/Praseodymium Doped Zinc Ferrite Composites as Promising Polyelectrolyte Membranes for Fuel Cells.

Polymers·2025
Same author

From Nature to Remediation: Biomaterials for Malachite Green Retention and Degradation.

Materials (Basel, Switzerland)·2025
Same author

Clays as Dual-Function Materials for TNT Adsorption and Catalytic Degradation: An Experimental Approach.

Materials (Basel, Switzerland)·2025
Same author

α-Ketoglutaric acid-derived carbon nanodots doped with manganese as fluorescent and MRI contrast agents.

Nanoscale·2025
Same author

Removal of Rifampicin and Rifaximin Antibiotics on PET Fibers: Optimization, Modeling, and Mechanism Insight.

Polymers·2025

相关实验视频

Updated: Jun 29, 2025

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.1K

用CoCl2添加的聚胺中温度控制的链动力学使用动态机械分析进行探测.

Daniela Ionita1, Mariana Cristea1, Ion Sava1

  • 1"Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41A, 700487 Iasi, Romania.

Materials (Basel, Switzerland)
|April 9, 2024
PubMed
概括

二) 化物 (CoCl2) 改变了聚胺分子动力学,受残留的酸组和盐含量的影响. 这项研究揭示了聚胺薄膜中的CoII-N协调键和内容依赖的增强效应.

关键词:
科巴尔特化物 化物动态机械分析机械分析聚胺聚胺的使用方法热影像化 热影像化粘弹性行为 粘弹性行为

更多相关视频

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

7.8K
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

6.4K

相关实验视频

Last Updated: Jun 29, 2025

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.1K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

7.8K
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

6.4K

科学领域:

  • 聚合物科学 聚合物科学
  • 材料化学 材料化学
  • 频谱学是一种光谱学.

背景情况:

  • 聚胺是先进的聚合物,在电子和航空航天领域有应用.
  • 二 (CoCl2) 是一种过渡金属盐,有可能改变聚合物特性.
  • 了解聚合物-盐相互作用对于开发新材料至关重要.

研究的目的:

  • 研究聚胺和CoCl2.2之间的分子动力学和相互作用.
  • 为了确定CoCl2含量对聚胺性质的影响.
  • 为了阐明和聚胺矩阵之间的协调化学.

主要方法:

  • 聚胺通过聚胺酸前体的合成.
  • 福里埃变换红外光谱 (FTIR) 和二维相关性光谱 (2D-COS) 用于化学组分析.
  • X射线光电子光谱 (XPS) 用于表面元素组成和粘合.
  • 动态机械分析 (DMA) 用于评估机械性能和放松行为.

主要成果:

  • 通过FTIR和2D-COS证实了残留的酸组的证据.
  • FTIR和XPS表示了和聚胺之间的Co ((II) -N协调键.
  • 还观察到与友酸组的协调.
  • DMA揭示了与CoCl2相关的特定放松作用,其强化作用取决于含量.

结论:

  • CoCl2显著改变了聚胺分子动力学.
  • 这种相互作用涉及Co (II) -N协调,可能与酸组.
  • 聚胺中的CoCl2的增强作用取决于其度.