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基于二二醇碳醇的刚性捐赠者-受体TADF分子用于能量和电子转移光催化

Sushil Sharma¹, Sanchita Sengupta¹

¹Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Punjab, 140306, India.

Chemistry (Weinheim an der Bergstrasse, Germany)

|November 27, 2023

概括

合成了呈现热激活延迟光 (TADF) 的新供体-受体分子,并证明了作为有机转换的光催化剂的高效率,包括C-H arylation和E/Z异构.

科学领域:

有机化学有机化学
光催化作用的光催化
材料科学材料科学材料科学

背景情况:

捐赠者-接受者 (D-A) 分子对于开发先进材料至关重要.
热激活延迟光 (TADF) 提供了高效的光发射途径.
光催化是可持续有机合成的关键技术.

研究的目的:

为了设计和合成新的扭曲D-A TADF分子.
研究它们作为有机转换的光催化剂的潜力.
评估它们的光物理性质和催化效率.

主要方法:

四个D-A TADF分子的合成:CBZ-IQ,CBZ-2FIQ,DI-IQ和DI-2FIQ.
理论计算和光物理性质的实验测量 (能量差距,光量子产量,衰变时间).
循环电压测量用于氧化还原潜力分析.
在光催化C-H化和E/Z异构化反应中的应用.

主要成果:

成功合成了四个扭曲的D-A TADF分子,其单元-三元能量差距为0.17-0.26 eV.
通过增加光量子产量和双衰变组件 (快速和延迟) 证明了TADF行为.
在 heteroarenes 的光催化C-H arylation 中取得了优异的产量 (高达80%).
通过能量转移光催化,在stilbene的E/Z异构化中展示了高转化率 (~90%).

结论:

设计的D-A TADF分子是关键有机转换的高效光催化剂.
它们的可调节的光物理特性使它们适用于各种催化应用.
这项工作为开发基于TADF的新型光催化系统提供了基础.

关键词:

迪因多洛卡巴索尔 (Diindolocarbazole) 是一种天然碳酸盐.印度洛基诺克萨林 (Indoloquinoxaline) 是一种在TADF的基础上.电子转移光催化剂的光催化作用能量转移光催化剂的能量转移.

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