三二化 () 复合物是一种发光的Fe2′-二)
Laura A Büldt1, Xingwei Guo1, Raphael Vogel1
1Department of Chemistry, University of Basel , St. Johanns-Ring 19 and Spitalstrasse 51, 4056 Basel, Switzerland.
Journal of the American Chemical Society
|January 6, 2017
概括
一个带有合联体的新复合体表现出发光和显著的稳定性,在太阳能电池和照明应用中提供了地球上丰富的贵金属替代品.
科学领域:
- 有机金属化学
- 材料科学
- 摄影化学
背景情况:
- 铁 (II) 复合物是染料敏感的太阳能电池的地球丰富的敏感剂,但它们的兴奋状态寿命有限.
- 贵金属经常用于发光器件和太阳能电池,推动了地球上丰富的替代品的研究.
- 稳定像这样的过渡金属的低氧化状态具有挑战性,但具有独特的电子性质.
研究的目的:
- 合成和表征一种新的(0) 复合物与双酸化异化物联体.
- 研究新复合物的光物理性质,稳定性和光降解能力.
- 探索这种丰富的土壤复合物的潜力,作为技术应用中贵金属的替代品.
主要方法:
- 合成具有甲基骨的双基化配体 (CNtBuAr3NC).
- 形成同质 ((0) 复合物,Cr ((CNtBuAr3NC) 3.
- 光物理特征,包括发光寿命测量和三倍-三倍灭绝上转化研究.
- 电化学分析以确定激发状态的氧化潜力.
主要成果:
- 合成的Cr{CNtBuAr3NC) 3复合物在室温下是稳定且发光的.
- 该复合物具有显著长的激发状态寿命 (2.2 ns),超过同电子铁复合物.
- 与其他Cr0复合物相比,Cr0BuAr3NC) 3具有较强的抗光降解性.
- 观察到高效的能量转移和三倍三倍的消灭转化.
- 该复合物作为一种强大的光降解剂,其激发状态氧化电位为-2.43V与Fc+/Fc.
结论:
- 这种新型的双酸化联体有效地稳定了的零价态.
- 在发光器件和染料敏感的太阳能电池中,Cr{CNtBuAr3NC) 3具有有希望的性能.
- 这项研究强调了土壤丰富的复合物作为贵金属的可持续替代品的潜力.
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