在一个分子复合体中,Er3+离子的生命周期大大增加,使用一种高化 imidodiphosphinate 敏感化连接体
Gaetano Mancino1, Andrew J Ferguson, Andrew Beeby
1Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, UK.
Journal of the American Chemical Society
|January 13, 2005
概括
研究人员通过使用高联体增强了分子复合体中离子 (Er3+) 的发光寿命. 这种寿命增加了50倍,使近红外发射分子设备进步.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学 有机化学
- 摄影化学的使用.
背景情况:
- 离子 (Er3+) 对于近红外 (NIR) 辐射应用至关重要.
- 提高Er3+的发光特性是开发先进光学设备的关键.
- 有机合物为调整类离子发光提供了一个多功能平台.
研究的目的:
- 为了研究 perfluorinated imidodiphosphinate 连接体对 Er3+ 的发光寿命的影响.
- 为了比较Er3+复合体与化和非化联体的发光特性.
- 在分子系统中建立Er3+激发状态生命周期的新基准.
主要方法:
- 合成Er3+复合物与化 (F-tpip) 和非化 (tpip) imidodiphosphinate连接物.
- 发光性质的表征,专注于1530nm发射频段.
- 在溶液,粉末和薄膜状态下测量激发状态寿命.
主要成果:
- 与F-tpip联体一起观察到Er3+发光寿命的显著增加.
- 对于Er(F-tpip) 3.3,平均寿命在150至220微秒之间.
- 与非化Er (tpip) 3类似物相比,寿命的最大50倍增长得到了实现.
- 获得了Er3+在简单有机酸盐中报告的最长寿命.
结论:
- perfluorinated imidodiphosphinate 配体大大提高了 Er3+ 离子的兴奋状态寿命.
- 这些发现在设计用于NIR应用的分子材料方面取得了重大进展.
- 改进的发光效率和寿命为通信,传感和分析领域的新型NIR发射分子设备铺平了道路.
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