{"title":"机械互锁结构对聚罗双环烷基聚合物电解质离子电导率的影响","authors":"Bitgaram Kim, Eunji Lee, Ji-Hun Seo","doi":"10.1021/acsmacrolett.4c00480","DOIUrl":null,"url":null,"abstract":"Polyrotaxane (PR) is a mechanically interlocked polymer (MIP) utilized as an electrolyte because of its distinctive property of dynamic molecular mobility. While numerous studies have concentrated on modifying external properties to decrease high crystallinity, few have explored the control of intrinsic properties. This study examines the crystalline properties and molecular mobility of PR-based electrolytes, along with their effects on ionic conductivity, by manipulating intrinsic properties. By systematically varying the inclusion ratio, we demonstrate that lower inclusion ratios lead to reduced crystallinity, enhancing molecular mobility. Consequently, 100PRE exhibits decreased crystallinity due to lower aggregation probabilities of α-cyclodextrins (α-CDs), longer <i>T</i><sub>2</sub> relaxation times (0.215 s), and higher ionic conductivity (3.4 × 10<sup>–3</sup> S cm<sup>–1</sup> at 25 °C).","PeriodicalId":18,"journal":{"name":"ACS Macro Letters","volume":"32 1","pages":""},"PeriodicalIF":5.2000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of a Mechanically Interlocked Structure on Ionic Conductivity in Polyrotaxane-Based Polymer Electrolytes\",\"authors\":\"Bitgaram Kim, Eunji Lee, Ji-Hun Seo\",\"doi\":\"10.1021/acsmacrolett.4c00480\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polyrotaxane (PR) is a mechanically interlocked polymer (MIP) utilized as an electrolyte because of its distinctive property of dynamic molecular mobility. While numerous studies have concentrated on modifying external properties to decrease high crystallinity, few have explored the control of intrinsic properties. This study examines the crystalline properties and molecular mobility of PR-based electrolytes, along with their effects on ionic conductivity, by manipulating intrinsic properties. By systematically varying the inclusion ratio, we demonstrate that lower inclusion ratios lead to reduced crystallinity, enhancing molecular mobility. Consequently, 100PRE exhibits decreased crystallinity due to lower aggregation probabilities of α-cyclodextrins (α-CDs), longer <i>T</i><sub>2</sub> relaxation times (0.215 s), and higher ionic conductivity (3.4 × 10<sup>–3</sup> S cm<sup>–1</sup> at 25 °C).\",\"PeriodicalId\":18,\"journal\":{\"name\":\"ACS Macro Letters\",\"volume\":\"32 1\",\"pages\":\"\"},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2024-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Macro Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1021/acsmacrolett.4c00480\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Macro Letters","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acsmacrolett.4c00480","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
摘要
聚对二甲苯（PR）是一种机械互锁聚合物（MIP），因其独特的动态分子流动性而被用作电解质。虽然许多研究都集中于改变外在特性以降低高结晶度，但很少有研究探讨如何控制内在特性。本研究探讨了基于 PR 的电解质的结晶特性和分子流动性，以及它们对离子电导率的影响。通过系统地改变包合比，我们证明较低的包合比会降低结晶度，从而提高分子流动性。因此，由于α-环糊精（α-CD）的聚集概率降低、T2弛豫时间延长（0.215 s）和离子电导率提高（25 °C时为3.4 × 10-3 S cm-1），100PRE的结晶度也随之降低。
Effects of a Mechanically Interlocked Structure on Ionic Conductivity in Polyrotaxane-Based Polymer Electrolytes
Polyrotaxane (PR) is a mechanically interlocked polymer (MIP) utilized as an electrolyte because of its distinctive property of dynamic molecular mobility. While numerous studies have concentrated on modifying external properties to decrease high crystallinity, few have explored the control of intrinsic properties. This study examines the crystalline properties and molecular mobility of PR-based electrolytes, along with their effects on ionic conductivity, by manipulating intrinsic properties. By systematically varying the inclusion ratio, we demonstrate that lower inclusion ratios lead to reduced crystallinity, enhancing molecular mobility. Consequently, 100PRE exhibits decreased crystallinity due to lower aggregation probabilities of α-cyclodextrins (α-CDs), longer T2 relaxation times (0.215 s), and higher ionic conductivity (3.4 × 10–3 S cm–1 at 25 °C).
期刊介绍：
ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science.
With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.
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