多金属氧簇(POMs)由于结构丰富、合成可控、性能易调节等优点，在能源、材料、催化等领域受到广泛关注。在光催化反应方面，大多数POMs需要使用高能量的紫外光或近紫外光激发，开发对可见光响应的POMs并应用于可见光促进的杂环合成是一项具有挑战性的研究课题。本项目拟采用通过静电作用力或共价键作用，向POMs中引入过渡金属原子、金属配合物、配体等，合成对可见光响应的功能化多金属氧簇，将其作催化剂应用到可见光促进的C-H键（或X-H键）官能化反应中，经自由基串联环化反应构建苯并咪唑并异喹啉酮类重要杂环。本项目涉及多酸化学和有机光合成的前沿交叉领域，项目的实施将为多金属氧簇的催化应用和可见光促进的有机合成带来新机遇。

Polyoxometalates (POMs) have attracted extensive attention in the field of energy, material, catalysis due to the structure diversity, controllable synthesis and tunable properties. In terms of photocatalytic reactions, POM catalysts generally require the irradiation of high-energy ultraviolet light or near-ultraviolet light. Therefore, the development of visible-light-responsive POM-based catalytic systems for photocatalytic heterocycle synthesis remains a very challenging task. In this project, we intend to introduce metal substitution, metal complexes and ligands to establish visible-light-responsive functionalized POMs either through electrostatic interactions or covalent bonds. Furthermore, the catalytic performances of the visible-light-responsive POMs will be investigated in the C-H (or X-H) functionalization reactions toward benzimidazo[2,1-a]isoquinolin-6(5H)-ones via radical cascade cyclization. This project involves the interdisciplinary of POM chemistry and organic photochemistry. The implementation of this project will bring new opportunities for the catalytic application of POMs and the visible-light promoted organic synthesis.