| 叠氮二(2,2'-联吡啶)钌(Ⅱ)配合物的光物理和光化学性质 |
| PHOTOPHYSICAL AND PHOTOCHEMICAL PROPERTIES OF AZIDO(BIS-2,2' - BIPYRIDINE) COMPLEX OF RUTHENIUM(Ⅱ) |
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| 摘要: 本文研究了叠氮二(2,2'—联吡啶)钌(Ⅱ)配合物在有机溶剂及乙腈—水中的一些光物理和光化学性质。在77K的甲醇—乙醇玻璃态时,用245nm等波长激发表现较强的荧光,其最大发射峰在540nm,另一弱带在580nm。在室温甲醇中测得的磷光发射是弱的,且寿命<15us。 在254nm、300nm及514nm照射下,光反应机制及量子产率与溶剂、照射波长有关。在乙腈—水及乙腈中,分别用254nm和514nm照射均发生取代反应,最后的光产物为Ru(bpy)2(N3)(CH3CN)+,配合物消失的量子产率分别为0.129±0.008mol einstein-1及(6.77±0.22)×10-5mol einstein-1;在乙腈—水中用514nm照射,生成的光产物先是Ru(bpy)2(N3)(CH3CN)+,再生成Ru(bpy)2(CH3CN)22+,配合物消失的量子产率为(5.32±0.13)×10-4mol einstein-1。 |
| 关键词: 光化学 发射寿命 量子产率 叠氮二(2,2'-联吡啶)钌(Ⅱ)配合物 |
| 基金项目: 中国科学院科学基金 |
| Abstract: Photophysical and photochemical properties of the complex cis-Ru (bpy)2(N3)2 H2O in organic solvent and acetonitrile-water have been investigated. The complex, exciting with 245 nm etc., exhibits stronger luminescence in methanol-ethanol glass at 77 K. The emission maximum is at 540 nm and a second weak band is at 580 nm. Emission from methanol is weak and of lifetime less than 15 ns at room temperature.When the complex was irradiated at 254 nm, 300 nm and 514 nm, the mechanism of photoreaction and quantum yields were found to be related to solvents and wavelength to be irradiated. The complex to be irradiated at 254 nm in acetonitrile-water and at 514 nm in acetonitrile results in photosubstitution reaction, last photoproduct is Ru(bpy).(N3)(CH3CN)+. The disappearance quantum yields of the complex are (0-.129 ± 008) mol einstein-1 and (6.77± 0.22) × 10-6 mol einstein-1 respectively. The complex was irradiated in acetonitrile-water by using 514 nm, the photoproduct was found to be Ru(bpy)2(N3)(CH3CN)+, and then to transform into Ru(bpy)2(CH3CN)22+. The disappearance quantum yield of the complex is (5.32 ± 13) × 10-4mol einstein-1. |
| Keywords: photochemistry emission lifetime quantum yield azido (bis-2,2'-bipy-ridine) complex of ruthenium (Ⅱ) |
| 投稿时间：1985-09-05 |
| 摘要点击次数: 1627 |
| 全文下载次数: 1472 |
| 陈忠.叠氮二(2,2'-联吡啶)钌(Ⅱ)配合物的光物理和光化学性质[J].无机化学学报,1986,2(4):20-30. |
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