Mechanical Effect Produced by Photo‐Switchable Reactions: Insights from Molecular Simulations

IF 1.8 4区 工程技术 Q3 POLYMER SCIENCE
Orlando Villegas, Marta Serrano Martínez, Laura Le Bras, Alistar Ottochian, Nicolas Pineau, Aurélie Perrier, Claire A. Lemarchand
{"title":"Mechanical Effect Produced by Photo‐Switchable Reactions: Insights from Molecular Simulations","authors":"Orlando Villegas, Marta Serrano Martínez, Laura Le Bras, Alistar Ottochian, Nicolas Pineau, Aurélie Perrier, Claire A. Lemarchand","doi":"10.1002/mats.202400033","DOIUrl":null,"url":null,"abstract":"Light‐responsive shape‐changing polymers are photonastic materials: they can convert light into mechanical energy through macroscopic transformations. Indeed, photochromic molecules embedded in these polymer films present light‐induced structural modifications that can trigger a significant macroscopic deformation. In this theoretical study based on molecular dynamics simulations, analysis tools ranging from atomic to supramolecular scales are developed to investigate this photonastic phenomenon. To this purpose, a model system built upon an azobenzene photochrome embedded in different environments (tetrahydrofuran, cis‐1,4‐polybutadiene and hydroxyl‐terminated polybutadiene) is considered. First, the impact of the environment on the photochrome properties is discussed through the analysis of the structural properties, ultra‐violet visible (UV–vis) absorption spectra and dynamical properties of the photoswitch. Then, the impact of the presence of the photochrome on the polymer is studied. At the atomic scale, the radial distribution functions show some differences between the cis and trans isomers due to geometrical effects. At the molecular scale, the analysis of the size and shape of the polymer chains reveals that the photochrome has no impact on the chain properties. Finally, at the macroscopic scale, the cohesive energy density shows that the polymer is stabilized by the presence of photochrome molecules.","PeriodicalId":18157,"journal":{"name":"Macromolecular Theory and Simulations","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Macromolecular Theory and Simulations","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1002/mats.202400033","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0

Abstract

Light‐responsive shape‐changing polymers are photonastic materials: they can convert light into mechanical energy through macroscopic transformations. Indeed, photochromic molecules embedded in these polymer films present light‐induced structural modifications that can trigger a significant macroscopic deformation. In this theoretical study based on molecular dynamics simulations, analysis tools ranging from atomic to supramolecular scales are developed to investigate this photonastic phenomenon. To this purpose, a model system built upon an azobenzene photochrome embedded in different environments (tetrahydrofuran, cis‐1,4‐polybutadiene and hydroxyl‐terminated polybutadiene) is considered. First, the impact of the environment on the photochrome properties is discussed through the analysis of the structural properties, ultra‐violet visible (UV–vis) absorption spectra and dynamical properties of the photoswitch. Then, the impact of the presence of the photochrome on the polymer is studied. At the atomic scale, the radial distribution functions show some differences between the cis and trans isomers due to geometrical effects. At the molecular scale, the analysis of the size and shape of the polymer chains reveals that the photochrome has no impact on the chain properties. Finally, at the macroscopic scale, the cohesive energy density shows that the polymer is stabilized by the presence of photochrome molecules.
光开关反应产生的机械效应:分子模拟的启示
光响应形变聚合物是一种光弹性材料:它们可以通过宏观变化将光转换为机械能。事实上,嵌入这些聚合物薄膜中的光致变色分子在光的诱导下会发生结构改变,从而引发显著的宏观形变。在这项基于分子动力学模拟的理论研究中,开发了从原子到超分子尺度的分析工具来研究这种光弹性现象。为此,研究人员考虑了一个模型系统,该系统由嵌入不同环境(四氢呋喃、顺式-1,4-聚丁二烯和羟基端聚丁二烯)中的偶氮苯光敏色素构成。首先,通过分析光开关的结构特性、紫外可见吸收光谱和动态特性,讨论了环境对光色素特性的影响。然后,研究了光铬的存在对聚合物的影响。在原子尺度上,由于几何效应,顺式和反式异构体的径向分布函数显示出一些差异。在分子尺度上,对聚合物链的大小和形状的分析表明,光铬对链的特性没有影响。最后,在宏观尺度上,内聚能密度显示聚合物因光铬分子的存在而变得稳定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Macromolecular Theory and Simulations
Macromolecular Theory and Simulations 工程技术-高分子科学
CiteScore
3.00
自引率
14.30%
发文量
45
审稿时长
2 months
期刊介绍: Macromolecular Theory and Simulations is the only high-quality polymer science journal dedicated exclusively to theory and simulations, covering all aspects from macromolecular theory to advanced computer simulation techniques.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信