诺尔[7]环中性基及其带电物种:合成,结构和高效的NIR-II光热转换用于成像和激光点火
Xiaoqi Tian1, Mingzhe Wang1, Xiaonan Ma1
1Institute of Molecular Plus, Department of Chemistry, Tianjin University and Haihe Laboratory of Sustainable Chemical Transformations, 92 Weijin Road, Tianjin, 300072, P.R. China.
Angewandte Chemie (International ed. in English)
|October 7, 2025
概括
研究人员合成了一个稳定的nor[7]circulenyl基 (nor[7]CR). 这种激素及其衍生物显示出作为成像和激光点火应用的先进光热材料的前景.
科学领域:
- 有机化学 有机化学
- 材料科学 材料科学 材料科学
背景情况:
- 环具有显著的研究兴趣,但开放结构仍然难以合成.
- 稳定的有机基是高级功能材料的有价值的构建模块.
研究的目的:
- 为了合成和描述一个稳定的开[n]circulene衍生物.
- 研究合成化合物的光热特性和潜在应用.
主要方法:
- 一个nor[7]circulenyl基 (nor[7]CR) 的合成及其在晶体形式的分离.
- 循环电压测量以确定氧化还原行为.
- 通过化学氧化,获得稳定的阳离子 (也不是[7]CR+).
- 阳离子物种的光谱表征.
主要成果:
- 一种高度稳定的nor[7]circulenyl基 (nor[7]CR) 已成功合成和分离.
- 也没有[7]CR表明四个阶段的两氧氧化还原行为.
- 稳定的阴离子,也不是[7]CR+,在1105nm时表现出强烈的近红外II (NIR-II) 吸收.
- 也没有[7]CR+在低光功率密度下显示出高光热转换效率 (PCE) 93%和高最大光热温度 (Tmax).
结论:
- 稳定的nor[7]circulenyl基及其阴离子是有前途的新光热材料.
- 也没有[7]CR+在光热成像和激光点火应用中显示出潜力.
- 这项工作扩大了用于先进材料应用的稳定开环衍生物的范围.
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