迪斯科特[e][1,2,4]三醇的替代物依赖磁性行为
Marcin Jasiński1, Jacek Szczytko2, Damian Pociecha3
1Faculty of Chemistry, University of Łódź , Tamka 12, 91-403 Łódź, Poland.
Journal of the American Chemical Society
|July 21, 2016
概括
具有[e][1,2,4]三烯核的新型磁盘介质具有独特的热和磁性特性. 这些材料表现出光诱导的孔传输,突出了它们在先进电子应用中的潜力.
科学领域:
- 材料科学
- 有机化学
- 凝聚物质物理学
背景情况:
- 迪斯科液晶以其自组装成柱状结构而闻名.
- [e][1,2,4]三基为设计功能性中原体提供了独特的核心.
- 调整中位子核上的替代物可以显著影响它们的相位行为和电子特性.
研究的目的:
- 基于[e][1,2,4]三基的新型磁盘介质的合成和特征.
- 研究N(1) 替代剂对柱状六角 (Colh) 阶段,热膨胀和磁相互作用的影响.
- 评估这些中原体在科尔赫阶段的光诱导电荷传输特性.
主要方法:
- 基于[e][1,2,4]三烯的光盘介质的合成,使用不同的N(1) 替代剂.
- 差分扫描热量计 (DSC) 和极化光学显微镜 (POM) 用于研究相位过渡和热膨胀.
- 测量磁性易感性以探测磁相互作用.
- 使用飞行时间 (TOF) 或类似技术进行光感应孔运输测量.
主要成果:
- 迪斯科特中位素的Colh阶段低于80°C.
- N(1) - (1a) 和1-PhF-m (1b) 衍生物具有正热膨胀和反铁磁相互作用.
- 1-(3,4,5-(C12H25X) 3C6H2) 的导数1c (X=O) 和1d (X=S) 表示负热膨胀.
- 在1c中观察到微弱的铁磁相互作用 (J/kB = +4.76 K).
- 化合物1a和1c在Colh阶段显示光诱导的孔传输 (μ ≈ 1.3 × 10(-3) cm(2) V(-1) s(-1).
结论:
- 替代物N(1) 关键控制分子组织,热膨胀和磁性行为在[e][1,2,4] triazinyl 盘子中.
- 在重的氧/氧侧链的衍生品中观察到负热膨胀.
- 在科尔赫阶段存在光诱导的孔运输表明有机电子中的潜在应用.
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