|
个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：无
其他任职：精细化工国家重点实验室副主任、大连理工大学-瑞典皇家工学院分子器件联合研究中心主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工
办公地点：大连理工大学西部校区化工实验楼E-223
联系方式：0411-84986493
电子邮箱：sunlc@dlut.edu.cn
Nickel Complex with Internal Bases as Efficient Molecular Catalyst for Photochemical H-2 Production
点击次数：
论文类型：期刊论文
发表时间：2014-10-01
发表刊物：CHEMSUSCHEM
收录刊物：SCIE、EI、PubMed、Scopus
卷号：7
期号：10
页面范围：2889-2897
ISSN号：1864-5631
关键字：density functional calculations; hydrogen; nickel; photochemistry; water splitting
摘要：A Ni complex with internal bases that contain bipyridine-derived ligands, [Ni(L)(2)(H2O)(2)](BF4)(2) ([1](BF4)(2), L=2-(2-pyridyl)-1,8-naphthyridine), and a reference complex that bears analogous bipyridine-derived ligands but without an internal base, [Ni(L)(3)](BF4)(2) ([2](BF4)(2), L=2-(2-pyridyl)quinoline), were synthesized and characterized. The electrochemical properties of these complexes were studied in CH3CN, H2O, and a mixture of EtOH/H2O. The fluorescence spectroscopic studies suggest that both dynamic and the sphere-of-action static quenching exist in the fluorescein Fl(2-)/[1](2+) and Fl(2-)/[2](2+) systems. These noble-metal-free molecular systems were studied for photocatalytic H-2 generation. Under optimal conditions, the turnover number of H-2 evolution reaches 3230 based on [1](2+), whereas [2](2+) displays only approximately one third of the turnover of [1](2+). A plausible mechanism for the catalytic H-2 generation by [1](2+) is presented based on DFT calculations.