有机化学 ›› 2016, Vol. 36 ›› Issue (10): 2407-2412.DOI: 10.6023/cjoc201606020 上一篇    下一篇

研究论文

蒽桥联的胺-胺电子耦合研究

冯骏a,b, 邵将洋a, 龚忠亮a, 钟羽武a,b   

  1. a 中国科学院化学研究所 北京 100190;
    b 中国科学院大学 北京 100149
  • 收稿日期:2016-06-13 修回日期:2016-07-17 发布日期:2016-08-10
  • 通讯作者: 钟羽武,E-mail:zhongyuwu@iccas.ac.cn E-mail:zhongyuwu@iccas.ac.cn
  • 基金资助:

    国家自然科学基金(Nos.21271176,21472196,21521062,21501183)和中国科学院战略性先导科技专项(No.XDB12010400)资助项目

Amine-Amine Electronic Coupling through an Anthracene Bridge

Feng JunShaoa,b, Jiangyanga, Gong Zhonglianga, Zhong Yuwua,b   

  1. a Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190;
    b University of Chinese Academy of Sciences, Beijing 100049
  • Received:2016-06-13 Revised:2016-07-17 Published:2016-08-10
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos.21271176, 21472196, 21521062, 21501183), and the Strategic Priority Research Program of the Chinese Academy of Sciences (No.XDB12010400).

合成了1,5-二(对甲氧基二苯胺)蒽(1)、2,6-二(对甲氧基二苯胺)蒽(2)和9,10-二(对甲氧基二苯胺)蒽(3)三种化合物,对它们的电化学、吸收和发射光谱、光谱电化学以及胺-胺电子耦合开展研究.三种化合物在+0.6~+1.0 V vs Ag/AgCl区域存在两步可逆氧化还原过程,两个氧化还原过程电位差△E在100 mV左右.单电子氧化产物1·+在近红外区域观测到弱价间电荷转移吸收(IVCT),电子耦合常数Vab估算为600 cm-1.化合物3·+观测到强IVCT吸收,其Vab估算为1440 cm-1.单电子氧化产物2·+则没有观测到明显IVCT吸收,表明有机胺在蒽桥基上的取代位置对胺-胺电子耦合程度有重要的影响.

关键词: 胺, 电荷转移, 电化学, 光化学

Three diamine compounds with an anthracene bridge were synthesized and characterized, including 1,5-bis(di-p-anisylamine)anthracene (1), 2,6-bis(di-p-anisylamine)anthracene (2) and 9,10-bis(di-p-anisylamine)anthracene (3). The elec-trochemistry, absorption and emission spectra, spectroelectrochemistry, and amine-amine electronic coupling of these compounds were examined. All compounds display two consecutive redox couples in the potential region between +0.6 and +1.0 V vs Ag/AgCl, with a potential splitting △E of around 100 mV. In the one-electron-oxidized state, weak intervalence charge transfer (IVCT) transitions were observed for 1·+ in the near-infrared (NIR) region and the electronic coupling parameter Vab was calculated to be 600 cm-1. In contrast, compound 3·+ displays an intense IVCT band in the NIR region with a Vab value of 1440 cm-1. However, no distinct IVCT band was discernable for 2·+, indicative of an eligible electronic coupling. This work demonstrates that the positions of the amine substituents on the anthracene bridge play a critical role in determining the degree of amine-amine electronic coupling.

Key words: amines, charge transfer, electrochemistry, photochemistry