一个分子双中心发射器用于比度光学温度计
Rong Sun1, Hong Huang2, Ye Xia2
1Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China wangbw@pku.edu.cn gaosong@pku.edu.cn.
Chemical science
|February 4, 2026
概括
这项研究引入了一种使用双中心发射双核复合体的新型分子温度计. 这种先进的光学温度计为精确的温度传感应用提供了高精度和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术纳米技术
背景情况:
- 电比度光学温度计对于精确的温度传感非常有价值,但由于依赖于杂材料,它们的可复制性往往很差.
- 现有的具有受控捐赠者-接受器距离的分子温度计在实际应用中尚未得到充分探索.
研究的目的:
- 开发具有高精度,可复制性和实际应用性的分子比度温度计.
- 为了研究一种新的双中心发射双核复合体,用于温度传感.
主要方法:
- 合成一个双中心发射的3d-4f双核复合体,[ZnLSm(OAc)(NO3)2] (ZnSm),使用希夫基联体 (L).
- 在485nm (ZnL) 和644nm (Sm3+) 的温度读取中,对ZnSm的双排放频段进行表征.
- 将ZnSm加工成柔性聚甲基酸 (PMMA) 薄膜 (ZnSm@PMMA),以提高适用性.
主要成果:
- ZnSm在233-333 K以上的定量温度读数显示出极好的可逆性和3.4%K-1.0的最大相对灵敏度.
- 观察到ZnL向Sm3+的高效能量转移,由希夫基联体介导,解释了温度依赖的双重发射.
- Sm@PMMA薄膜保持了比度测温性能,显示了热映射和集成传感的潜力.
结论:
- 为高性能,双中心发射比度光学温度计提出了强大的分子设计策略.
- 由于明显的颜色变化,开发的综合体及其膜具有光学防伪和信息加密的潜力.
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