Main-chain hybrid azobenzene-1,2,3-triazoleoligo(dimethylsiloxane) liquid-crystalline photoactive copolymers

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-03-08 DOI:10.1016/j.reactfunctpolym.2025.106256

Dmitry Migulin , Kseniya Bezlepkina , Mikhail Buzin , Artem Bakirov

{"title":"Main-chain hybrid azobenzene-1,2,3-triazoleoligo(dimethylsiloxane) liquid-crystalline photoactive copolymers","authors":"Dmitry Migulin , Kseniya Bezlepkina , Mikhail Buzin , Artem Bakirov","doi":"10.1016/j.reactfunctpolym.2025.106256","DOIUrl":null,"url":null,"abstract":"<div><div>The development of well-designed anisotropically ordered photoactive liquid-crystalline polymers has potential in the development of a number of areas related to high-tech light-responsive materials and devices, including photonics, optical switching, image storage, soft actuators, etc.</div><div>The synthesis and characterization of a new type of photoactive linear main chain liquid-crystalline hybrid copolymers with regularly alternating molecular architectures is achieved for the first time through the use of azide-alkyne cycloaddition chemical reactions between a series of alkyne-terminated azobenzene molecules and azide-functional oligo(dimethylsiloxane) telechelics.</div><div>The present investigation encompasses an array of chemical structures and molecular morphologies, thermodynamic properties, thermotropic liquid-crystalline and photoisomerization behaviors, and the influence of the azo-copolymer molecular composition on the polymers' microstructure, morphologies, and propensity towards thermotropic self-assembly into lamellar spherulitic structures.</div><div>The kinetics of non-degradative reversible <em>E-Z</em> photoisomerization transitions and the relationship between the molecular composition of the polymers and their photoinduced isomerization behavior were investigated.</div><div>The morphology and degree of anisotropy of physically cross-linked LCPs fibers prepared by the simple melt spinning method were studied.</div><div>The results obtained provide important insights into the structure-property relationship of photoactive main chain hybrid azobenzene-siloxane LCPs, which are useful for the design of novel advanced photoactive polymers.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"212 ","pages":"Article 106256"},"PeriodicalIF":4.5000,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactive & Functional Polymers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1381514825001087","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

The development of well-designed anisotropically ordered photoactive liquid-crystalline polymers has potential in the development of a number of areas related to high-tech light-responsive materials and devices, including photonics, optical switching, image storage, soft actuators, etc.

The synthesis and characterization of a new type of photoactive linear main chain liquid-crystalline hybrid copolymers with regularly alternating molecular architectures is achieved for the first time through the use of azide-alkyne cycloaddition chemical reactions between a series of alkyne-terminated azobenzene molecules and azide-functional oligo(dimethylsiloxane) telechelics.

The present investigation encompasses an array of chemical structures and molecular morphologies, thermodynamic properties, thermotropic liquid-crystalline and photoisomerization behaviors, and the influence of the azo-copolymer molecular composition on the polymers' microstructure, morphologies, and propensity towards thermotropic self-assembly into lamellar spherulitic structures.

The kinetics of non-degradative reversible E-Z photoisomerization transitions and the relationship between the molecular composition of the polymers and their photoinduced isomerization behavior were investigated.

The morphology and degree of anisotropy of physically cross-linked LCPs fibers prepared by the simple melt spinning method were studied.

The results obtained provide important insights into the structure-property relationship of photoactive main chain hybrid azobenzene-siloxane LCPs, which are useful for the design of novel advanced photoactive polymers.

Abstract Image

查看原文本刊更多论文

主链混合偶氮苯-1,2,3-三唑啉基（二甲基硅氧烷）液晶光活性共聚物

设计良好的各向异性有序光活性液晶聚合物的发展在许多与高科技光响应材料和器件相关的领域具有潜力，包括光子学，光开关，图像存储，软致动器，通过一系列端炔偶氮苯分子与叠氮官能团低聚（二甲基硅氧烷）远旋物之间的叠氮-炔环加成化学反应，首次合成并表征了一种具有规则交替分子结构的新型光活性线性主链液晶杂化共聚物。目前的研究包括一系列的化学结构和分子形态、热力学性质、热致液晶和光异构化行为，以及偶氮共聚物分子组成对聚合物的微观结构、形态和热致自组装成层状球晶结构的倾向的影响。研究了非降解可逆E-Z光异构化转变动力学以及聚合物分子组成与其光致异构化行为的关系。研究了熔体纺丝法制备的物理交联lcp纤维的形态和各向异性程度。这些结果为研究光活性主链偶氮苯-硅氧烷杂化lcp的结构-性能关系提供了重要的见解，为新型高级光活性聚合物的设计提供了参考。

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

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.