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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (8): 937-942. 上一篇    下一篇

研究论文

三(2,2'-联吡啶)钌(II)在磷酸锆层状物中的组装及光物理性质

彭艳丽1，石士考*,1，叶建平2   

  1. (1河北师范大学化学与材料科学学院 石家庄 050016)
    (2中国科学院化学研究所光化学重点实验室 北京 100080)
  • 投稿日期:2007-07-15 修回日期:2007-09-18 发布日期:2008-04-28
  • 通讯作者: 石士考

Assemblies of Tris(2,2'-bipyridyl) Ruthenium(II) into Zirconium Phosphate Layered Materials and Their Photophysical Properties

PENG Yan-Li 1 SHI Shi-Kao*,1 YE Jian-Ping2   

  1. (1 College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050016)
    (2 Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080)
  • Received:2007-07-15 Revised:2007-09-18 Published:2008-04-28
  • Contact: SHI Shi-Kao

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合成了两种层间距极其相近的层状材料Zr(HPO4)2•6H2O(水合α-ZrP)和丁胺-磷酸锆的复合物(α-ZrP•BA), 将发光配合物 组装到层状物中使层间距从1.04 nm增大到1.52 nm. 与层状物相互作用后最大吸收峰均从452 nm (水溶液)红移到了462 nm. 在水合α-ZrP中, 最大发射峰位从610 nm蓝移到604 nm并且荧光强度是水溶液中的两倍多, 连续测定4 h以后, 的荧光强度仅仅下降了4%; 而与α-ZrP•BA相互作用后发射峰位从610 nm移动到了595 nm, 但荧光强度只是稍有增大, 4 h内强度下降了大约29%; 组装到水合α-ZrP中以后, 的激发态寿命从415 ns(水溶液)增大到787 ns (～95%), 在α-ZrP•BA中只增大到了747 ns (～89%). 这些结果表明层状物水合α-ZrP能够为 光物理性能的改善提供更加优良的微观环境.

关键词: 磷酸锆, 组装, 发光

Layered materials of zirconium phosphate containing Zr(HPO4)2•6H2O (hydrated α-ZrP) and Zr(HPO4)2•butylammonium (α-ZrP•BA), which have similar interlayer distance, were prepared. The incorporation of the luminescent metal complex tris(2,2'-bipyridyl)ruthenium(II) within the layered materials expands the interlayer distance from 1.04 to 1.52 nm. When the metal complex assembled to the layered frameworks, the absorption band of the complex was red shifted from 452 to 462 nm. In the hydrated α-ZrP framework, the emission intensity of the complex was over 2-fold compared to that of the same system in aqueous solution and the position of the maximum emission was blue shifted from 610 (aqueous solution) to 604 nm. After the assembly suspension deposited for 4 h, the emission intensity of was reduced by only 4%. However, in α-ZrP•BA, the luminescence intensity of the complex had a little increase and the emission peak was shifted to 595 nm. The emission intensity of decreased by 29% when the suspension was deposited for 4 h. Time-resolved studies manifest that the excited state lifetime of was extended from 415 to 787 ns (～95%) in the hydrated α-ZrP, whereas the lifetime is 747 ns (～89%) in the α-ZrP•BA.

Key words: zirconium phosphate, assembly, luminescence