首页> 中文期刊> 《光谱学与光谱分析》 >荧光材料Cu2(μ-Ⅰ2)(phen)2·CH3CN 的合成、表征及光谱研究

荧光材料Cu2(μ-Ⅰ2)(phen)2·CH3CN 的合成、表征及光谱研究

         

摘要

Binuclear complex [C2(μI)2(phen)2] · CH3CN(l)(phen=l,10-phenanthroline) was synthesized under solvother-mal conditions and characterized by elemental analysis, IR spectrum, and single-crystal X-ray diffraction. X-ray diffraction analysis reveals that complex 1 is monoclinic, space group P21, and the cell parameters are: a =10. 505 A, 6=23. 628 A, c = 10. 676 A,, α =90°,β=91. 40° and γ =90°. the authors have studied the luminescence property of 1, Complex 1 has blue-purple luminescence in solutions of DMSO with emission bands at 369, 380 and 460sh run; and has red luminescence in the solid state at room temperature with a broad emission band at 650~678 nm. These all can be attributed to the π* →π transition based on the ligand. In the solid state, the emission frequencies for complex 1 are red-shifted about 280 nm compared with their emission maximum peaks in solutions of DMSO. This red-shift of emission energy from solution to solid is likely to be caused by the inter-molecular π-π packing interaction in the solid state which effectively decreases the energy gap. The fluorescence decay curve of complex 1 indicated that the processes of decay consists of two components, whose corresponding lifetimes are τ1 =1. 36 [xs and r2=5.98μs, corresponding factors are 50. 21% and 49. 79% in DMSO solutions, and τ1=l. 42 μs, τ2=8.8μs, corresponding factors are 51. 15% and 48. 85% in the solid state.%采用溶剂热法合成出一例具有双核结构的铜(Ⅰ)配合物[Cu2(μ-I)2 (phen)2]·CH3CN(1)(phen=1,10-邻菲咯啉).采用元素分析、IR和单晶x-射线衍射表征其结构,同时分别测试了配合物1在DMSO溶液中和固态时的荧光光谱及荧光寿命.在室温条件下,配合物1的DMSO溶液在369和380nm有最大发射峰,在460nm处有一个肩峰,呈现蓝紫色荧光;在室温固体状态下,配合物1在650~678nm处有一宽谱带的强发射峰,呈现强的红色荧光,这均是基于配体中心激发单重态到基态单重态(π*→π)的跃迁发射.配合物1荧光衰减过程包含双组分,在DMSO溶液中的荧光寿命τ1和τ2分别为1.36和5.98 μs,对应的衰减因子分别为50.21%和49.79%;固态时的荧光寿命τ1和τ2分别是1.42和8.85μs,对应的衰减因子分别为51.15%和48.85%.

著录项

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号