{"title":"Precise main-chain length dependence for the chiral supramolecular self-assembly of oligofluorenes in chiral solvent","authors":"Tengfei Miao , Yin Zhao , Zixiang He , Wei Zhang","doi":"10.1016/j.eurpolymj.2024.113682","DOIUrl":null,"url":null,"abstract":"<div><div>The conjugation length of polyfluorene (PF) main-chain critically influences transfer of chirality effect. Herein, achiral monodisperse fluorene oligomers (FOn) with varying main-chain lengths were successfully synthesized and purified via the Yamamoto coupling method and size-exclusion chromatography. Subsequent results from the low-temperature cooperative assembly with single chiral limonene reveal that effective supramolecular chiral transfer occurs in oligomers with more than 8 repeating units. This process is accompanied by circular dichroism analysis, which shows that a strong chiral signal is associated with an increase in β-phase content. Our findings will provide theoretical guidance for future research on novel chiral conjugated materials, potentially advancing their applications in photonics, sensors, and flexible electronics.</div></div>","PeriodicalId":315,"journal":{"name":"European Polymer Journal","volume":"223 ","pages":"Article 113682"},"PeriodicalIF":5.8000,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Polymer Journal","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0014305724009431","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
The conjugation length of polyfluorene (PF) main-chain critically influences transfer of chirality effect. Herein, achiral monodisperse fluorene oligomers (FOn) with varying main-chain lengths were successfully synthesized and purified via the Yamamoto coupling method and size-exclusion chromatography. Subsequent results from the low-temperature cooperative assembly with single chiral limonene reveal that effective supramolecular chiral transfer occurs in oligomers with more than 8 repeating units. This process is accompanied by circular dichroism analysis, which shows that a strong chiral signal is associated with an increase in β-phase content. Our findings will provide theoretical guidance for future research on novel chiral conjugated materials, potentially advancing their applications in photonics, sensors, and flexible electronics.
期刊介绍：
European Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine. The main scope is covered but not limited to the following core research areas:
Polymer synthesis and functionalization
• Novel synthetic routes for polymerization, functional modification, controlled/living polymerization and precision polymers.
Stimuli-responsive polymers
• Including shape memory and self-healing polymers.
Supramolecular polymers and self-assembly
• Molecular recognition and higher order polymer structures.
Renewable and sustainable polymers
• Bio-based, biodegradable and anti-microbial polymers and polymeric bio-nanocomposites.
Polymers at interfaces and surfaces
• Chemistry and engineering of surfaces with biological relevance, including patterning, antifouling polymers and polymers for membrane applications.
Biomedical applications and nanomedicine
• Polymers for regenerative medicine, drug delivery molecular release and gene therapy
The scope of European Polymer Journal no longer includes Polymer Physics.
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