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工程照相控制的动态结合切换在阿连接的共价有机框架中,用于增强光催化

Shuailong Yang^1,2, Duanhui Si^1,2, Lei Zou^1,2

¹State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China.

Angewandte Chemie (International ed. in English)

|December 13, 2025

概括

研究人员使用动态结合切换策略设计了共价有机框架 (COF),以提高光催化效率. 这种方法抑制了电子孔重组,显著提高了过氧化生产率.

科学领域:

材料科学材料科学材料科学
光催化作用的光催化
有机化学有机化学

背景情况:

光催化为能源和环境问题提供解决方案.
共价有机框架 (COFs) 是有前途的,但受到电子孔重组的影响.
优化COF结构是提高光催化效率的关键.

研究的目的:

开发一个动态的结合交换策略,用于阿因结合的COFs.
为了抑制COF中的电子孔重组.
为了提高光催化效率,用于诸如过氧化生产等应用.

主要方法:

合成了三种基于亚的COF (COF-TPTA,COF-TPB,COF-TPA),具有不同的电子特性.
采用超快光谱和理论计算来分析电子结构和电荷载体动态.
通过测量氧和水中的过氧化生产率来评估光催化性能.

主要成果:

COF-TPB表现出状态依赖的结合,将π电子定位在基本状态,并将其移位到激发状态.
在COF-TPB中这种动态结合抑制了载体重组,导致H2O2生产率为1205μmol g−1 h−1.1.
开发的策略是可通用的,在其他基于阿的系统中实现1463μmolg-1h-1的高光催化剂速率.

结论:

通过结合切换的动态电子结构工程是优化COF的有效策略.
由于抑制了电子孔重组,COF-TPB表现出卓越的光催化性能.
这项工作为设计高效光催化剂提供了新的范式.

关键词:

结合交换机结合交换机共价有机框架是共价有机框架.动态电子结构调制动态电子结构调制电子结构不匹配电子结构不匹配光催化H2O2生产的方法

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