结晶的结合有机框架,用于耐空气的三倍三倍灭绝升级转换
Qiaoyu Zhang1,2, Guiwen Luo1,2, Rui Hu3
1Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. zengyi@mail.ipc.ac.cn.
Chemical communications (Cambridge, England)
|April 2, 2024
概括
研究人员开发了一种与结合的有机框架 (HOF),用于固态三倍三倍灭绝上转换 (TTA-UC). 与无序粉末相比,这种HOF材料显著提高了上转换效率,并降低了所需的能量值.
科学领域:
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
- 有机化学 有机化学
背景情况:
- 三倍-三倍灭绝上转换 (TTA-UC) 是将低能光子转换为高能光子的一种有前途的方法.
- 开发高效的固态TTA-UC材料对于太阳能转化和光动力学疗法等应用至关重要.
- 控制固态中的分子排列是优化TTA-UC性能的关键.
研究的目的:
- 为固态TTA-UC.设计和合成一种新的结有机框架 (HOF).
- 研究有序的HOF结构对TTA-UC效率和值的影响.
- 探索分子扩散和固态上升转换性能之间的关系.
主要方法:
- 合成一个9,10-二甲烯碳酸衍生物 (DPACOOH).
- 使用DPACOOH.构建一个与结合的有机框架.
- 关于HOF和无序粉样的特征.
- 测量两个样本的上转换量子收益率和值能量.
- 在HOF和粉样中确定三倍扩散长度.
主要成果:
- 合成的HOF材料证明了高效的固态TTA-UC.
- 与无序粉末相比,在HOF中观察到70%的上转换量子产量增加.
- 在HOF展现了126.0mWcm-2的较低值.
- 与粉末样本相比,在HOF中测量了43%更长的三重扩散长度.
结论:
- HOF的有序结构促进了高效的三重能量传输,从而提高了TTA-UC的性能.
- HOF是开发先进固态光子材料的有希望的平台.
- 通过键控制分子包装是提高TTA-UC效率的有效策略.
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