手性化合物中的结晶动力学显示在中等冷却速率下近晶CA*相的玻璃化

IF 1.3 4区材料科学 Q3 CRYSTALLOGRAPHY

Phase Transitions Pub Date : 2023-01-28 DOI:10.1080/01411594.2023.2168541

A. Deptuch, E. Juszyńska-Gałązka, Małgorzata Jasiurkowska-Delaporte, A. Drzewicz, M. Piwowarczyk, M. Urbańska

{"title":"手性化合物中的结晶动力学显示在中等冷却速率下近晶CA*相的玻璃化","authors":"A. Deptuch, E. Juszyńska-Gałązka, Małgorzata Jasiurkowska-Delaporte, A. Drzewicz, M. Piwowarczyk, M. Urbańska","doi":"10.1080/01411594.2023.2168541","DOIUrl":null,"url":null,"abstract":"ABSTRACT The crystallization of the 3F5FPhF6 compound from the liquid crystalline antiferroelectric smectic CA* phase is investigated in various conditions using differential scanning calorimetry and polarizing optical microscopy. The kinetics of isothermal melt and cold crystallization is studied on the basis of the Avrami model. The kinetics of non-isothermal cold crystallization is analysed using the Ozawa model and the activation energy is determined by the Augis-Bennett, Friedman’s differential isoconversional and Matusita methods. The border temperature between the diffusion-controlled crystallization and thermodynamically-controlled crystallization is estimated. The high fragility index of 105 is determined from the α-process in the smectic CA* phase by the broadband dielectric spectroscopy. The metastable, conformationally disordered crystal phase, forming only via cold crystallization, is reported.","PeriodicalId":19881,"journal":{"name":"Phase Transitions","volume":"96 1","pages":"166 - 185"},"PeriodicalIF":1.3000,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Crystallization kinetics in the chiral compound showing the vitrification of the smectic CA* phase for moderate cooling rates\",\"authors\":\"A. Deptuch, E. Juszyńska-Gałązka, Małgorzata Jasiurkowska-Delaporte, A. Drzewicz, M. Piwowarczyk, M. Urbańska\",\"doi\":\"10.1080/01411594.2023.2168541\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT The crystallization of the 3F5FPhF6 compound from the liquid crystalline antiferroelectric smectic CA* phase is investigated in various conditions using differential scanning calorimetry and polarizing optical microscopy. The kinetics of isothermal melt and cold crystallization is studied on the basis of the Avrami model. The kinetics of non-isothermal cold crystallization is analysed using the Ozawa model and the activation energy is determined by the Augis-Bennett, Friedman’s differential isoconversional and Matusita methods. The border temperature between the diffusion-controlled crystallization and thermodynamically-controlled crystallization is estimated. The high fragility index of 105 is determined from the α-process in the smectic CA* phase by the broadband dielectric spectroscopy. The metastable, conformationally disordered crystal phase, forming only via cold crystallization, is reported.\",\"PeriodicalId\":19881,\"journal\":{\"name\":\"Phase Transitions\",\"volume\":\"96 1\",\"pages\":\"166 - 185\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2023-01-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Phase Transitions\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1080/01411594.2023.2168541\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CRYSTALLOGRAPHY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Phase Transitions","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/01411594.2023.2168541","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}

引用次数: 3

摘要

摘要用差示扫描量热法和偏光显微镜研究了3F5FPhF6化合物在不同条件下从液晶反铁电近晶CA*相结晶的过程。在Avrami模型的基础上研究了等温熔体和冷结晶的动力学。用Ozawa模型分析了非等温冷结晶的动力学，并用Augis-Bennett、Friedman微分等转化率和Matusita方法确定了活化能。估算了扩散控制结晶和热力学控制结晶之间的边界温度。高脆性指数105是由近晶CA*相中的α过程通过宽带介电光谱确定的。报道了仅通过冷结晶形成的亚稳、构象无序的晶相。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Crystallization kinetics in the chiral compound showing the vitrification of the smectic CA* phase for moderate cooling rates

ABSTRACT The crystallization of the 3F5FPhF6 compound from the liquid crystalline antiferroelectric smectic CA* phase is investigated in various conditions using differential scanning calorimetry and polarizing optical microscopy. The kinetics of isothermal melt and cold crystallization is studied on the basis of the Avrami model. The kinetics of non-isothermal cold crystallization is analysed using the Ozawa model and the activation energy is determined by the Augis-Bennett, Friedman’s differential isoconversional and Matusita methods. The border temperature between the diffusion-controlled crystallization and thermodynamically-controlled crystallization is estimated. The high fragility index of 105 is determined from the α-process in the smectic CA* phase by the broadband dielectric spectroscopy. The metastable, conformationally disordered crystal phase, forming only via cold crystallization, is reported.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Phase Transitions 物理-晶体学

CiteScore

3.00

自引率

6.20%

发文量

审稿时长

1.4 months

期刊介绍： Phase Transitions is the only journal devoted exclusively to this important subject. It provides a focus for papers on most aspects of phase transitions in condensed matter. Although emphasis is placed primarily on experimental work, theoretical papers are welcome if they have some bearing on experimental results. The areas of interest include: -structural phase transitions (ferroelectric, ferroelastic, multiferroic, order-disorder, Jahn-Teller, etc.) under a range of external parameters (temperature, pressure, strain, electric/magnetic fields, etc.) -geophysical phase transitions -metal-insulator phase transitions -superconducting and superfluid transitions -magnetic phase transitions -critical phenomena and physical properties at phase transitions -liquid crystals -technological applications of phase transitions -quantum phase transitions Phase Transitions publishes both research papers and invited articles devoted to special topics. Major review papers are particularly welcome. A further emphasis of the journal is the publication of a selected number of small workshops, which are at the forefront of their field.