影像科学与光化学 ›› 2010, Vol. 28 ›› Issue (4): 241-246.DOI: 10.7517/j.issn.1674-0475.2010.04.241

• 研究快讯 •    下一篇

环双(百草枯对苯撑)-双2-萘甲酸三缩四乙二醇酯二元超分子给受体体系光诱导电子转移研究

李旭兵, 王晓军, 王格侠, 邢令宝, 张丽萍, 佟振合, 吴骊珠   

  1. 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, 北京, 100190
  • 收稿日期:2010-04-28 修回日期:2010-06-07 出版日期:2010-07-23 发布日期:2010-07-23
  • 通讯作者: 吴骊珠
  • 基金资助:
    科技部国家重点基础研究计划发展项目(G2007CBS08004,2009CB220008);国家自然科学基金资助项目(20732007,20973189)

Photoinduced Electron Transfer in Self-assembly CBPQT and N-P4-N

LI Xu-bing, WANG Xiao-jun, WANG Ge-xia, XING Ling-bao, ZHANG Li-ping, TONG Zhen-he, WU Li-zhu   

  1. Key Laboratory of Photochemical Conversion and Optoeletronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
  • Received:2010-04-28 Revised:2010-06-07 Online:2010-07-23 Published:2010-07-23

摘要: 本文利用核磁氢谱、吸收光谱和荧光光谱证明了环双(百草枯对苯撑)(CBPQT)与双2-萘甲酸三缩四乙二醇(N-P4-N)在乙腈溶液中能够形成1:1的二元超分子给受体体系.瞬态吸收光谱的研究表明该超分子体系中光诱导电子转移的速率kCS>1.0×108s-1,电子回传的速率kCR=1.26×103s-1,光诱导电子转移所生成电荷分离态的寿命长达794μs.

关键词: 超分子给受体体系, 光诱导电子转移, 长寿命电荷分离态, 紫精自由基

Abstract: The self-assembly of CBPQT and N-P4-N has been well evidenced by 1HNMR,UV-vis and fluorescence measurements.Time-resolved spectroscopy revealed that photoinduced electron transfer from N-P4-N to CBPQT takes place in this assembly with rate constant kCS> 1.0×108s-1,charge recombination kCR=1.26×103s-1,and the charge-separation has a life-time up to 794 μs in acetonitrile at room temperature.

Key words: supramolecular D-A system, photo-induced electron transfer, charge separation, viologen radical

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