通过光诱导的E→Z异构化解锁有机晶体中的冷灵活性
Jiang Peng1, Jing Yang1, Chengde Ding2
1Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Chemical Engineering of Shanxi Normal University, Taiyuan, China.
Angewandte Chemie (International ed. in English)
|September 22, 2025
概括
研究人员在有机分子晶体中开发了光诱导的冷弹性. 这一突破使灵活的,对刺激有反应的材料适用于极端环境和冷应用.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 机械工程 机械工程
背景情况:
- 有机晶体通常是脆弱和刚硬的,特别是在冷温度下,限制了它们的应用.
- 实现对这些材料机械性能的动态控制是一个重大挑战.
研究的目的:
- 为了证明有机分子晶体中的光诱导的冷弹性.
- 为极端环境设计响应刺激的材料建立一个可通用的策略.
主要方法:
- 使用光活性E→Z异体化在光响应性酸衍生物 (NPH) 晶体中.
- 应用365nm紫外线辐射来诱导表面局部化的异构化和部分表面化.
- 在液中,在低温温度 (77 K) 测试的机械性能.
主要成果:
- 被辐射的NPH晶体在77K时表现出弹性变形和光机械曲.
- 不被辐射的晶体在77K时破裂,而碎片保留了光力学活性.
- 证明了机械合规性的远程,合成后调制.
结论:
- 在有机分子晶体中实现了第一例光诱导的冷弹性.
- 开发了一种在极端环境中可操作的机械可重新配置的晶体的策略.
- 为冷执行器,自适应光学和低温灵活电子产品开辟了新的途径.
相关概念视频
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