第一排d6金属复合物使光子向上转换,并启动蓝光依赖红光聚合的聚合
Cui Wang1,2, Christina Wegeberg1,3, Oliver S Wenger1
1Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland.
Angewandte Chemie (International ed. in English)
|September 8, 2023
概括
这项研究引入了一种基于的新型光敏剂,用于高效的三倍三倍灭绝上转换 (sTTA-UC). 这一突破使得使用丰富的金属能够将红光转化为蓝光,为新的光化学应用铺平了道路.
科学领域:
- 摄影化学的使用.
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
背景情况:
- 三倍-三倍灭绝升级转换 (sTTA-UC) 通常使用贵重金属光敏感剂.
- 对于sTTA-UC来说,在第一排过渡金属 (3d金属) 中实现长寿命的三重激发状态是具有挑战性的,尤其是部分填充的d子.
研究的目的:
- 为了展示使用3d6金属光敏剂的stta-uc的第一个例子.
- 开发一种具有与贵金属同类产品竞争力的光敏剂.
- 探索红光启动光化学中的应用.
主要方法:
- 一种新的(0) 光敏剂的合成.
- 结合一个装饰着乙的炭灭菌器,用于红色到蓝色的升级转换.
- 光物理性质的表征,包括上升转换效率和激发功率密度值.
- 通过红光启动的烯胺聚合物的演示.
主要成果:
- 通过Cr(0) 光敏剂和烯衍生物实现了红色到蓝色的上升转换.
- 在优化条件下获得了1.8%的上升转换效率.
- 确定了激发功率密度值为5.9W/cm2的强消灭.
- 证明了系统的高光稳定性.
- 使用红光成功启动了烯胺聚合物.
结论:
- 使用贵金属d6光敏感剂的第一排过渡金属类似物进行光子向上转换的概念验证.
- 接近红外激发波长触发的光化学反应的潜力.
- 开辟了开发具有成本效益和可持续的升级系统的途径.
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