Abstract
合成了5个meso-位和β-位具有不同取代基的Yb(Ⅲ)卟啉配合物(2a~2e)，并对其结构进行了表征；研究了配合物的可见光谱和近红外光谱性质，测得了相关的量子产率和荧光寿命。研究结果表明，此类中性单核Yb(Ⅲ)卟啉配合物由于Yb3+的存在，导致卟啉配体发生π→π*跃迁，并将吸收的可见光能量传递给Yb3+的激发态，使得配合物在近红外光区有很强的发光，且meso-位为供电子基团的Yb(Ⅲ)卟啉配合物的发光效率比含吸电子基团的Yb(Ⅲ)卟啉配合物高，而β-位溴化的Yb(Ⅲ)卟啉配合物的发光效率较差。
A series of ytterbium(Ⅲ) monoporphyrinate complexes(2a—2e), bearing different substituents on meso- or β- position, were synthesized and characterized via UV-Vis, 1H NMR, high-resolution mass spectra and elemental analysis. The photoluminescent properties of the complexes, especially in the near-infrared region, were studied in detail. Related quantum yield and fluorescence lifetime show that the energy is transferred to the excited state of ytterbium(Ⅲ) ion caused by excitation of the π→π* transitions of porphyrinate, which led to strong NIR emission. The light-emitting efficiency of the complexes with electron-donating substituents on meso-position is better than that of complexes with electron-withdrawing substituents, while the complex with bromide on β-position possesses the poor ability of light-emitting.
| Translated title of the contribution | Synthesis, characterization and near-infrared photoluminescence of ytterbium(III) monoporphyrinate complexes |
|---|---|
| Original language | Chinese (Simplified) |
| Pages (from-to) | 2131-2135 |
| Number of pages | 5 |
| Journal | 高等学校化学学报 |
| Volume | 30 |
| Issue number | 11 |
| Publication status | Published - 10 Nov 2009 |
Scopus Subject Areas
- Chemistry(all)
User-Defined Keywords
- 镱卟啉配合物的合成
- 结构表征
- 近红外光谱
- Synthesis of Ytterbium(III) monoporphyrinate complex
- Structure characterization
- Near-infrared spectrum