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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
Phosphine Coordination to a Cobalt Diimine-Dioxime Catalyst Increases Stability during Light-Driven H-2 Production
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论文类型：期刊论文
发表时间：2012-02-20
发表刊物：INORGANIC CHEMISTRY
收录刊物：PubMed、SCIE、Scopus
卷号：51
期号：4
页面范围：2115-2120
ISSN号：0020-1669
摘要：The combination of cobalt diimine-dioxime complexes with a cyclometalated iridium photosensitizer gives efficient systems for hydrogen generation under visible-light irradiation using triethylamine as a sacrificial electron donor. Interestingly, the addition of triphenylphosphine (PPh3) to the medium results in a significant improvement of the stability of the system, with up to similar to 700 turnovers achieved within 10 h. UV-visible spectroscopic monitoring of the reaction allows identification of a PPh3-coordinated Co-I intermediate as the active species. Mechanistic issues regarding (i) the photogeneration of the Co-I species, (ii) the nature of the active species, and (iii) the influence of PPh3 on the H-2-evolution mechanism are discussed.