高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (5): 1000.doi: 10.7503/cjcu20140060

• 物理化学 • 上一篇    下一篇

N-杂环卡宾-吡啶基钌光敏染料的电子结构和光谱性质的理论研究

夏喜泉, 张辉, 张桂玲   

  1. 哈尔滨理工大学化学与环境工程学院, 黑龙江省绿色化工与技术重点实验室, 哈尔滨 150040
  • 收稿日期:2014-01-20 出版日期:2014-05-10 发布日期:2014-04-29
  • 作者简介:联系人简介: 张桂玲, 女, 教授, 主要从事光电磁材料的理论及实验研究. E-mail:1621717290@qq.com
  • 基金资助:
    国家自然科学基金(批准号: 51073048)、 黑龙江省自然科学基金项目(批准号: B201102)、 哈尔滨市带头人基金项目(批准号: 2013RFXXJ024)和哈尔滨理工大学拔尖人才基金项目资助

Theoretical Studies on the Structures and Spectroscopic Properties of N-Heterocyclic Carbene-pyridine-based Ruthenium Sensitizers

XIA Xiquan, ZHANG Hui, ZHANG Guiling*()   

  1. Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province,College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China
  • Received:2014-01-20 Online:2014-05-10 Published:2014-04-29
  • Contact: ZHANG Guiling E-mail:1621717290@qq.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51073048), the Natural Science Foundation of Heilongjiang Province, China(No.B201102), the Science Foundation for leaders in Academe of Harbin City of China(No.2013RFXXJ024) and the Science Foundation for Elitists of Harbin University of Science and Technology of China

摘要:

以N749染料为母体, 保留三联吡啶配体(tcterpy)作为辅助配体, 利用两齿的N-杂环卡宾-吡啶配体(NHC-py)替代2个硫氰酸(NCS)配体设计了一系列同时含有三齿配体和两齿配体的染料分子1~4. 利用密度泛函理论(DFT)和含时密度泛函理论(TD-DFT)方法对染料分子1~4及母体分子N749的几何结构、 电子结构和光谱性质进行了系统的理论研究. 研究结果表明, 该系列分子具有良好的光吸收性能, 最低能吸收波长可达到800 nm, 吸收跃迁为MLCT/LLCT混合跃迁.

关键词: N-杂环卡宾-吡啶, 钌, 电子吸收, 密度泛函理论, 含时密度泛函理论

Abstract:

Using bidentate N-heterocyclic carbene-pyridine ligands in substitution for two thiocyanates of the N749, a series of novel thiocyanate-free cyclometalated ruthenium polypyridine complexes(1—4) was designed. These complexes were studied theoretically using density functional theory(DFT) and time-dependent density functional theory(TD-DFT) techniques to explore their geometry structures, electronic structures and the spectral properties. The calculations indicate that the lowest-energy absorption of complexes 1—4 in CH3CN solution is calculated at around 800 nm, arise from the MLCT/LLCT transition.

Key words: N-Heterocyclic carbene-pyridine, Ruthenium, Electron absorption, Density functional theory, Time dependent-density functional theory

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