奇拉分子红宝石 [Cr(dqp) 2]3+具有长寿命的圆极化发光
Juan-Ramón Jiménez1, Benjamin Doistau1, Carlos M Cruz2
1Department of Inorganic and Analytical Chemistry , University of Geneva , 30 Quai E. Ansermet , CH-1211 Geneva 4, Switzerland.
Journal of the American Chemical Society
|July 30, 2019
概括
实现了分子红宝石[Cr(dqp) 23+的奇拉分辨率,在NIR区域产生具有强循环极化发光 (CPL) 的反体. 这为奇拉发光材料和光子装置开辟了新的可能性.
科学领域:
- 协调化学
- 材料科学
- 光物理学
背景情况:
- 具有发光的状分子材料对于先进的光学设备至关重要.
- 开发基于地球上丰富的金属的高效合发射器是一个重大挑战.
- 动态惰性 (III) 复合物为稳定的发光应用提供了潜力.
研究的目的:
- 为了实现动态惰性分子红宝石的性分辨率[Cr(dqp) 2+
- 描述分离的反体的光物理性质,包括循环偏光 (CPL).
- 探索这些合体在发光器件中的潜力.
主要方法:
- 使用阳离子交换染色学进行基质分辨率.
- 用六酸盐进行盐转化 (KPF6).
- 用X射线结晶学来确定绝对的配置.
- 循环偏光光谱 (CPL).
- 光物理测量包括激发状态寿命和量子产量.
主要成果:
- 将[Cr(dqp) 23+成功分解为PP-(+) 和MM-(-) 体.
- 使用X射线结晶学和Flack参数来分配绝对配置.
- 在高不对称系数的NIR区域观察双极化发射波段 (gadggggggggggggggggggggg).
- 在水中的室温下,长激发状态寿命 (1.2 ms) 和高量子产量 (5.2%).
结论:
- [Cr(dqp) 2]3+的奇拉分辨率和特征表明其作为奇拉发光材料的潜力.
- 高不对称系数和有利的光物理特性使其适用于能量转换装置和NIR-CPL应用.
- 这项工作强调了地球上丰富的复合体在极化光子装置中的有用性.
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