激活TADF在光子上转换晶体的双核 (I) - 化物复合体通过联体工程的激活TADF
Joy Chatterjee1, Abhijit Chatterjee1, Riteeka Tanwar1
1Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune-411008, Maharashtra, India.
The journal of physical chemistry letters
|May 31, 2024
概括
铜复合体中的联体工程使光电子设备的高效三重收获成为可能. 这项研究详细介绍了结构变化如何调整光发光,从而导致温暖的白光发射和非线性光学特性.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 光物理学的光学物理学
背景情况:
- 对于高效的有机发光二极管 (OLED) 来说,三重收获至关重要.
- 调整金属复合物的光物理性质为新型光电子材料提供了途径.
- 桥式体Cu2I2复合体是发光和非线性光学的有希望的支架.
研究的目的:
- 为了研究连接体工程对Cu2I2复合物的三重收获机制的影响.
- 建立结构-属性关系,以优化光发光和非线性光学响应.
- 为了证明这些复合物的应用在发出热白光的pc-LED和非线性光子向上转换.
主要方法:
- 合成和表征两种不同的桥式体Cu2I2复合物 (复合物-1和复合物-2).
- 光物理研究包括量子产量测量和排放机制分析 (光与TADF).
- 用转换发光二极管 (pc-LED) 装置的制造和测试.
- 第三和生成 (THG) 测量以评估非线性光学特性.
主要成果:
- 复合-1,具有较短的Cu-Cu距离,显示光 (M+X) LCT和CC状态) 具有66%的量子产量.
- 复合-2具有增加的Cu-Cu距离,通过1/3的LCT状态通过M+X表现出热激活延迟光 (TADF),量子产量为83%.
- 复合-2被用来创建一个高效的温暖白色PC-LED.
- 这两种复合体都显示出第三生成 (THG),复合体-1显示出高非线性易感性 (χ(3) 1.15 × 10-18 m2 V-2 和激光诱导损伤值 (LIDT) 14.73 GW/cm2.
结论:
- 连接体工程有效调节Cu2I2复合体中的三重收获和排放路径.
- 对Cu-Cu距离的结构控制是光和TADF之间切换的关键.
- 这些Cu2I2复合物是用于OLED和非线性光学应用中高效发光的多功能材料.
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