影像科学与光化学 ›› 2015, Vol. 33 ›› Issue (6): 468-478.DOI: 10.7517/j.issn.1674-0475.2015.06.468

• 论文 • 上一篇    下一篇

取代基对咪唑[4,5-f]-1,10-邻菲罗啉Ru(Ⅱ)配合物的温敏性能影响

高云燕, 王子超, 欧植泽, 句宝龙, 黄干, 冯钊   

  1. 西北工业大学 理学院 空间应用物理与化学教育部重点实验室, 陕西 西安 710072
  • 收稿日期:2015-07-12 修回日期:2015-09-16 出版日期:2015-11-16 发布日期:2015-11-16
  • 通讯作者: 欧植泽
  • 基金资助:

    国家自然科学基金(21073143)和西北工业大学研究生创新种子基金(Z2015152)资助

The Effect of Substituent on the Temperature Sensitive Properties of Imidazo[4,5-f]-1,10-phenanthroline Ruthenium(Ⅱ) Complex

GAO Yunyan, WANG Zichao, OU Zhize, JU Baolong, HUANG Gan, FENG Zhao   

  1. Ministry of Education Key Laboratory of Space, Applied Physics and Chemistry, Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, P. R. China
  • Received:2015-07-12 Revised:2015-09-16 Online:2015-11-16 Published:2015-11-16

摘要:

合成了3种具有不同取代基的咪唑[4, 5-f]-1,10-邻菲罗啉配体L1~L3及其Ru(Ⅱ)配合物[Ru(L1)3]、[Ru(L2)3]和[Ru(L3)3],并进行了表征。这些Ru(Ⅱ)配合物在溶液中具有π→π*跃迁吸收峰和金属到配体的电荷转移跃迁(MLCT)吸收峰,其发光峰位约为590 nm左右。将Ru(Ⅱ)配合物掺杂到聚甲基丙烯酸甲酯(PMMA)中得到相应的温敏漆。Ru(Ⅱ)配合物在PMMA膜中的吸收峰精细结构消失,且在长波方向663 nm附近有新的发射峰,表明Ru(Ⅱ)配合物在PMMA膜中有聚集。温度升高后,Ru(Ⅱ)配合物在PMMA膜中的发射峰强度逐渐减弱。分别计算了在30~60 ℃和60~90 ℃区间内非辐射活化能Enr和温度灵敏度ST。结果表明,具有苯基取代的咪唑[4, 5-f]-1,10-邻菲罗啉配体的[Ru(L1)3]配合物,比咪唑[4, 5-f]-1,10-邻菲罗啉Ru(Ⅱ)配合物[Ru(L2)3]及烷基取代基的咪唑[4, 5-f]-1,10-邻菲罗啉Ru(Ⅱ)配合物[Ru(L3)3]具有更高的温度灵敏度。

关键词: 温敏漆, Ru(Ⅱ)配合物, 温度灵敏度, 聚甲基丙烯酸甲酯膜

Abstract:

Three imidazo[4,5-f]-1,10-phenanthroline derivatives L1-L3,with different substitutes, and their Ru(Ⅱ) complexes have been synthesized and characterized. These Ru(Ⅱ) complexes show characteristic π→π* transition and metal-ligand charge transfer (MLCT) transition absorptions, and emission maximums at 590 nm. The Ru(Ⅱ) complexes have been doped into the Poly(methyl methacrylate) (PMMA) and obtained the temperature sensitive paint. In PMMA film, the fined structure of the absorption spectra of the Ru(Ⅱ) complexes disappeared, and a new emission peak at the longer wavelength (663 nm) appeared, indicating the aggregation of Ru(Ⅱ) complexes. The emission intensity of the Ru(Ⅱ) complexes in PMMA film decreases gradually with increase of the temperature. The activation energy of non-radiative process (Enr) temperature sensitivity (ST) of compounds are calculated in the range of 30-60 ℃ and 60-90 ℃, respectively. The results indicate that [Ru(L1)3] with phenyl substituted imidazo[4,5-f]-1,10-phenanthroline has relatively higher ST than [Ru(L2)3] with imidazo[4,5-f]-1,10-phenanthroline and [Ru(L3)3] with alkyl substituted imidazo[4,5-f]-1,10-phenanthroline.

Key words: temperature sensitive paints, Ru(Ⅱ) complex, temperature sensitivity, poly(methyl methacrylate) film