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Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (11): 1347-1353. Previous Articles     Next Articles

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姜黄素稀土大环配合物的光致变色性能研究

宋玉民*,1，张玉梅1，马新贤1，朱早龙1，许军鹏1，刘景旺2   

  1. (1西北师范大学化学化工学院 兰州 730070)
    (2天津师范大学化学与生命科学学院 天津 300074)
  • 投稿日期:2010-09-08 修回日期:2011-01-07 发布日期:2011-01-29
  • 通讯作者: 宋玉民 E-mail:songym@nwnu.edu.cn

Photochromic Properties of Rare Earth Macrocylic Complexes of Curcumin

Song Yumin*,1 Zhang Yumei1 Ma Xinxian1 Zhu Zaolong 1 Xu Junpeng1 Liu Jingwang2   

  1. (1 College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070)
    (2 College of Chemistry and Life Science, Tianjin Normal University, Tianjin 300074)
  • Received:2010-09-08 Revised:2011-01-07 Published:2011-01-29

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Rare earth macrocylic complexes of double-double of curcumin reduction diethylenetriamine (L) have been synthesized by the template reaction and have been characterized by 1H NMR, IR, thermal analysis, molar conductivity and element analysis. Their compositions were confirmed as following: [LnL(NO3)3]•4H2O (Ln＝La, Ce, Pr, Nd, Sm, Eu, Dy). The fluorescent properties of these complexes were studied at room temperature and shown the characteristic emissions of curcumin. Through research of photochromic of these complexes, it was found the complexes show good photochromic. Moreover, the photochromic property of the complexes was studied by the methods of steady state and time dependent fluorescence spectra. The structure of ligand in complex changed from —NH— to ＝N— under light. The influence of solvent on the photochromic property of the complexes was also investigated.

Key words: curcumin, rare earth complexes, UV absorption spectrum, photochromism