Wang Zhiye, Wang Cheng
State Key Laboratory of Physical Chemistry of Solid Surfaces, iChem, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.
Adv Mater. 2021 Dec;33(50):e2005819. doi: 10.1002/adma.202005819. Epub 2021 Mar 31.
Excited state energy transfer in metal-organic frameworks (MOFs) is of great interest due to potential application of these materials in photocatalysis and fluorescence sensing. In photocatalysis, a light-harvesting antenna of MOFs can collect energy from a much larger area than a single reaction center and efficiently transport the energy to the active site to enhance photocatalytic efficiency, mimicking nature photosynthesis. In fluorescence sensing, excited state traveling on the framework can search for analyte quencher molecules to give amplified fluorescence quenching, so that one quencher turns off multiple excited states to enhance signal. Key to these designer performances is highly efficient energy transfer on these framework materials that are determined by types of excited states, dimension of the materials, and structure of the frameworks. Advancement of MOF synthetic chemistry provides new tools to control the rate and directionality of energy transfer in these materials, opening opportunities in manipulating excited states at an unprecedented level.
金属有机框架材料（MOFs）中的激发态能量转移备受关注，因为这些材料在光催化和荧光传感方面具有潜在应用价值。在光催化中，MOFs的光捕获天线能够从比单个反应中心大得多的区域收集能量，并将能量有效地传输到活性位点，以提高光催化效率，这类似于自然光合作用。在荧光传感中，框架上的激发态能够寻找分析物猝灭分子，从而产生放大的荧光猝灭，使得一个猝灭剂能够淬灭多个激发态，增强信号。这些设计性能的关键在于这些框架材料上的高效能量转移，而这取决于激发态类型、材料维度和框架结构。MOF合成化学的进展提供了新工具，可用于控制这些材料中能量转移的速率和方向性，为以前所未有的水平操纵激发态带来了机遇。
