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相关概念视频

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Determination of Molar Masses of Polymers I01:24

Determination of Molar Masses of Polymers I

Polymerization produces macromolecules with a range of chain lengths due to the random nature of molecular growth processes. As chains form and terminate at different stages, a single polymer sample contains molecules of varying sizes rather than a uniform structure. This variability is described using average molar masses and distribution-related parameters, which together provide a comprehensive understanding of polymer characteristics.The distribution of molar masses plays a critical role in...

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相关实验视频

Updated: Jul 4, 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

用随机标记的聚合物来研究长距离的聚合物链动力学,通过光来研究这种情况.

Mark Ingratta1, Jon Hollinger, Jean Duhamel

  • 1Institute for Polymer Research, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo Ontario N2L 3G1, Canada.

Journal of the American Chemical Society
|June 28, 2008
PubMed
概括

在标有烯的聚合物中,脱离体的形成强烈依赖于溶剂粘度. 随机标记的聚合物对于研究远程聚合物链动态 (LRPCD) 有效.

科学领域:

  • 聚合物科学 聚合物科学
  • 光物理学的光学物理学
  • 材料化学 材料化学

背景情况:

  • 在聚合物中,排外体的形成对链动力学很敏感.
  • 了解聚合物链动态对于材料性能至关重要.
  • 标有pyrene的聚合物对于聚合物的行为是有用的探测器.

研究的目的:

  • 为了研究溶剂粘度和质量对烯标记聚钢中的脱体形成的影响.
  • 为了比较终端标记与随机标记聚合物的有效性,用于研究远程聚合物链动力学 (LRPCD).
  • 验证随机标记聚合物的使用,作为LRPCD研究的可行替代方案.

主要方法:

  • 聚烯末端标记 (PS(X) -Py2) 和随机标记 (CoE-PS,CoA-PS) 聚烯的合成.
  • 稳态和时间分辨率的光光谱在各种溶剂.
  • 使用伯克斯方案和光斑模型 (FBM) 进行分析.

主要成果:

  • 随着溶剂粘度的下降,排泄物形成显著增加.
  • 长距离聚合物链动态 (LRPCD) 的参数在不同的标签方法中是一致的.
  • 随机标记的聚合物提供了与终端标记的聚合物相比的结果.

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Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
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Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

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Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules
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Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules

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Last Updated: Jul 4, 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

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
11:34

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

Published on: September 8, 2016

Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules
10:23

Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules

Published on: April 25, 2025

结论:

  • 溶剂粘度是控制烯标记聚合物中脱体形成的关键因素.
  • 随机标记的聚合物适合和有利于研究LRPCD.
  • 这项研究支持随机标记的聚合物在聚合物动力学研究中的更广泛应用.