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

Radical Chain-Growth Polymerization: Chain Branching01:17

Radical Chain-Growth Polymerization: Chain Branching

2.5K
The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...
2.5K
Polymer Classification: Architecture01:14

Polymer Classification: Architecture

3.9K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.9K
Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

3.4K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
3.4K
Molecular Weight of Step-Growth Polymers01:08

Molecular Weight of Step-Growth Polymers

2.9K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.9K
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

4.1K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
4.1K
Polymers: Molecular Weight Distribution01:10

Polymers: Molecular Weight Distribution

4.9K
For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.
4.9K

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

Polypyrrole-Coated Microneedle Platform for Offline Electrochemical Detection of Interferon-Alpha in Interstitial Fluid.

ACS applied bio materials·2026
Same author

Automated registration and clustering for enhanced localization atomic force microscopy of flexible membrane proteins.

PLoS computational biology·2025
Same author

Engineering of lipid membranes asymmetrically functionalized with chondroitin sulfate.

Faraday discussions·2025
Same author

Precise Fabrication of Graphite-Like Material Directly on a Biological Membrane Enabled by Ethanol Ice Resist.

Nano letters·2025
Same author

Insights into interactions between taxanes and P-glycoprotein using biophysical and in silico methods.

Journal of pharmaceutical sciences·2025
Same author

Sulfated glycosaminoglycans are host epithelial cell targets of the Candida albicans toxin candidalysin.

Nature microbiology·2024
Same journal

Analysis of strength degradation of coal and rock masses and stability of mined areas under long term immersion environment.

PloS one·2026
Same journal

Biogenic Silver-Selenium nanocomposite with anticancer activity and potent efficacy against vancomycin-resistant Staphylococcus aureus.

PloS one·2026
Same journal

Preparation and physicochemical characterization of a biodegradable chitosan/carboxymethyl cellulose hydrogel synthesized in NaOH/urea medium.

PloS one·2026
Same journal

Action-guilt, survivor-guilt, and depression in combat-related PTSD.

PloS one·2026
Same journal

Explainable machine learning for predicting activities of daily living at discharge in stroke patients: A retrospective study using SHAP interpretability.

PloS one·2026
Same journal

Deep learning based two-way feature depiction model for brain tumor detection.

PloS one·2026
查看所有相关文章

相关实验视频

Updated: Feb 19, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

8.5K

PS Poly:一种链式追踪算法,用于确定持久度长度,并根据形状对复杂聚合物进行分类.

Elizabeth A Conley1, Creighton M Lisowski1, Katherine G Schaefer1

  • 1Department of Physics and Astronomy, University of Missouri-Columbia, Columbia, Missouri United States of America.

PloS one
|February 17, 2026
PubMed
概括
此摘要是机器生成的。

一个新的算法,持久长度形状聚合物 (PS Poly),自动化了从原子力显微镜图像中分析聚合物的形状和刚度. 该工具快速处理数千种聚合物,有助于了解生物分子功能和聚合机制.

更多相关视频

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers
08:00

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

Published on: October 25, 2017

7.3K
MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups
06:16

MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups

Published on: October 3, 2025

1.8K

相关实验视频

Last Updated: Feb 19, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

8.5K
DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers
08:00

DNA Nanotubes as a Versatile Tool to Study Semiflexible Polymers

Published on: October 25, 2017

7.3K
MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups
06:16

MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups

Published on: October 3, 2025

1.8K

科学领域:

  • 生物物理学的生物物理.
  • 聚合物科学 聚合物科学
  • 生物化学 生物化学

背景情况:

  • 聚合物如核酸和蛋白质是生命的基础,具有不同的机械特性和形状.
  • 持久度长度量化了聚合物曲刚度,而形状 (线性,循环,分支) 对于功能和稳定性至关重要.
  • 了解聚合物物理属性对于生物应用至关重要.

研究的目的:

  • 介绍持久长度形状聚合物 (PS Poly),一种用于分析聚合物物理属性的新型自动化算法.
  • 为了能够从原子力显微镜 (AFM) 图像中快速精确地分析单聚合物分子.
  • 为提取聚合物刚性,形状和聚合物的关键信息提供一个通用的工具.

主要方法:

  • 开发了PS Poly,一种利用图像骨架和端点/分支点检测的算法.
  • 在生理学上相关的流体条件下获得的单分子AFM图像上应用PS Poly.
  • 使用良好的特征脱氧核糖核酸 (DNA) 和复杂的候选酶聚合物验证了算法的准确性.

主要成果:

  • 在分析聚合物物理属性方面,PS Poly实现了近乎完全的自动化和亚像素精度.
  • 该算法成功量化了数千个聚合物分子的持久度长度和形状.
  • 通过分析DNA和真菌毒素candidalysin,证明了强度和通用性.

结论:

  • PS Poly是一种强大的,可泛化的算法,用于提取基本的聚合物信息.
  • 该工具可快速分析聚合物骨干硬度,架构和聚合机制.
  • 聚合物聚合物为推动生物物理学和聚合物科学研究提供了巨大的潜力.