【作者】 于天君； 王稳； 曾毅； 陈金平； 李嫕；

【Author】 Tianjun Yu;Wen Wang;Yi Zeng;Jinping Chen;Yi Li;Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences;

【机构】 中国科学院理化技术研究所光化学转换与功能材料重点实验室；

【摘要】 利用太阳能生产氢气是一种洁净环保的氢能来源,也是一种有前途的太阳能存储方法。本研究中,我们设计合成了基于PAMAM树枝形聚合物的模拟酶Hy-PAMAM,Hy-PAMAM的中心核[2Fe2S]为催化活性中心,催化质子产氢;树枝形骨架增加了模拟酶的水溶性,并调控电子转移过程。这项研究为构筑人工模拟酶催化产氢体系提供了新的思路。更多还原

【Abstract】 A water-soluble catalyst Hy-PAMAM is created by using a hydrophobic [2Fe2S] catalytic center connected to hydrophilic PAMAM dendritic matrix. The [2Fe2S] core of Hy-PAMAM acts as the active site to generate H₂ by reducing H⁺, and the dendritic frameworks provide a distinct microenvironment to improve the water solubility, regulate the electron-transfer process and protect the active site. Hy-PAMAM has been successfully applied to the photochemical production of hydrogen in pure water with Ru（bpy）3 Cl₂ and H₂A as the photosensitizer and the sacrificial electron donor, respectively. The present study provides an approach for modifying hydrophobic artificial catalysts to apply in water as well as developing artificial photosynthesis.更多还原