高等学校化学学报

高等学校化学学报

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共价嫁接Ru(Ⅱ)配合物杂化材料的制备及氧气传感性能研究

张浩然1, 白焱3, 李斌2, 雷炳富2, 傅春艳1   

    1. 东北师范大学化学学院, 长春 130024;
    2. 中国科学院长春光学精密机械与物理研究所激发态重点实验室, 长春 130033;
    3. 松辽流域水环境监测中心, 长春 130021
  • 收稿日期:2006-04-27 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 李斌

Preparation and Oxygen Sensing Properties of Hybrid Materials Based on a Covalently Grafted Ruthenium(Ⅱ) Complex

ZHANG Hao-Ran1, BAI Yan3, LI Bin2, LEI Bing-Fu2, FU Chun-Yan1   

    1. Faculty of Chemistry, Northeast Normal University, Changchun 130024, China;
    2. Key Laboratory of Excited State Processes, Changchun Institute of Optics Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
    3. Song-Liao River Basin Water Quality Monitoring Center, Changchun 130021, China
  • Received:2006-04-27 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: LI Bin

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被引次数

7

摘要： 利用十六烷基三甲基溴化铵制备了一种具有MSU型蠕虫状孔道结构, 同时共价嫁接了Ru(Ⅱ)配合物的介孔杂化功能材料, 并研究了其氧气传感性能. 双功能有机改性硅酸酯Bpy-Si不仅是配合物Ru(bpy)2Cl2·2H2O的一个配体, 而且通过与正硅酸乙酯的水解和共聚反应, 把Ru(bpy)2(bpy-Si)Cl2配合物通过Si—C共价键嫁接到二氧化硅的骨架上. 研究结果表明, Ru(Ⅱ)分子在杂化材料中的发光受氧气猝灭明显, 而且具有较快的响应时间, 所得材料具有作为性能优良的氧气传感材料研究的潜质. 由于介孔材料的独特孔道结构有利于氧气在载体中的扩散, 介孔样品表现出比无定形样品更高的灵敏度.

关键词: 钌配合物, 共价嫁接, 氧气传感器, 介孔分子筛

Abstract:

The preparation and oxygen sensing properties of mesoporous materials DWM with a structure similar to that of MSU-type mesoporous materials based on covalently grafted Ru(bpy)2+3 fragments through the Si—CH2 covalent bonds were described in this paper. The 2,2'-bipyridyl covalently grafted to 3-aminopropyltriethoxysilane was used as one of the sol-gel precursor and the ligand of Ru(bpy)2Cl2·2H2O complex to prepare the sol-gel derived silicates. The luminescence of the covalently grafted Ru(Ⅱ) luminophore within the mesoporous matrix can be extremely quenched by oxygen with a good sensitivity and rapid response time, which suggests that the covalently grafting strategy presented in this paper can be used to develop superior oxygen sensor. In addition, the mesoporous structure possesses a higher sensitivity than that of the amorphous one due to the inner porous channels of the mesoporous matrix favor the diffusion of oxygen, resulting in the higher sensitivity and shorter response time. Furthermore, the covalently grafting method possesses the distinct advantages over those physically entrapped methods due to the Si—CH2 covalent bond, which greatly minimized the dye leaching effect and ensure the good stability.

Key words: Ruthenium complex, Covalently grafting, Oxygen sensor, Mesostructured molecular sieves

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