相关实验视频

Updated: Jul 6, 2025

Synthesis and Characterization of Supramolecular Colloids

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

可见光驱动的控制在三重和四重结的超分子组件上

Eleanor M Hilton^1,2, Michael A Jinks^1,3, Andrew D Burnett¹

¹School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.

Chemistry (Weinheim an der Bergstrasse, Germany)

|January 8, 2024

概括

研究人员使用光响应合成子开发了对可见光有反应性的超分子聚合物. 这些智能材料显示可调节的组装和性能,由光和度控制,为先进的功能材料铺平了道路.

科学领域:

超分子化学超分子化学
材料科学材料科学材料科学
聚合物化学聚合物化学

背景情况:

超分子聚合物为"智能"材料提供了潜力,但需要对刺激有反应系统.
开发能够响应外部触发的材料对于先进的应用至关重要.

研究的目的:

为了描述可见光响应的键超分子聚合物.
为了研究结基因和度对聚合物组件的影响.
为了证明光触发对超分子结构和性质的控制.

主要方法:

光响应的超分子合成子的合成和特征 (I-III).
DOSY用核磁共振和粘度测量来研究聚合物组装和行为.
光化学刺激改变亚博核和影响组装.

主要成果:

组装受到结动机强度和度的强烈影响.
化合物I显示了循环单体和寡合体之间的度依赖切换.
化合物II形成了依赖光和度的超分子聚合物.
化合物III代表了第一个可光切换的AB型键超分子聚合物.

结论:

键动图的强度决定了超分子组装的行为.
可见光可以精确地控制这些超分子聚合物的组合和特性.
开发的系统通过外部刺激对材料特性进行可调节的控制.

关键词:

折工人折工人是什么意思水素结合的图案是有结合的.照片交换机照片交换机高分子聚合物 • 高分子聚合物 •

更多相关视频

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates

Published on: February 15, 2016

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

相关概念视频

Photochemical Electrocyclic Reactions: Stereochemistry

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation

Cycloaddition Reactions: MO Requirements for Photochemical Activation

Cycloaddition Reactions: MO Requirements for Photochemical Activation

Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.

Radical Formation: Homolysis

Radical Formation: Homolysis

A bond is formed between two atoms by sharing two electrons. When this bond is broken by supplying sufficient energy, either two electrons can be taken up by one atom forming ions by the cleavage called heterolysis, or the two electrons are shared by two atoms, with one each creating radicals by the cleavage called homolysis.