| 冠醚取代蒽醌超分子体系的设计与合成及分子内能量转移的研究 |
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| 引用本文： | 李晖,许慧君,周庆复.冠醚取代蒽醌超分子体系的设计与合成及分子内能量转移的研究[J].影像科学与光化学,2000,18(1). |
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| 作者姓名： | 李晖 许慧君 周庆复 |
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| 摘 要： | 大环冠醚由于其自组装性能及分子识别能力而引起人们广泛的重视.近来,冠醚又成为在超分子体系中用于建构主体分子的一种重要的建造单元1～4].Costa5]等曾报道苯并冠醚与被识别的稀土离子铕(Ⅲ)与铽(Ⅲ)之间的能量传递过程,选择性激发冠醚主体观察到稀土离子的发光.由于二氮杂冠醚与稀土离子能形成更稳定的配合物6].我们利用了冠醚分子的分子识别能力及蒽醌分子的光敏性,设计合成了一种新的氮杂冠醚取代蒽醌分子(图1)(以下文中用代号AQ-CW表示),并以该分子作为主体分子,以稀土离子作为客体构成超分子体系,研究超分子体系内的能量转移过程.
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| 关 键 词： | 二氮杂冠醚 蒽醌 铕(Ⅲ) 超分子体系 能量转移 |
DESIGN AND SYNTHESIS OF A DIAZA-18-CROWN-6 SUBSTITUTED ANTHRAQUINONE SUPRAMOLECULAR SYSTEM AND INTRAMOLECULAR ENERGY TRANSFER |
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| LI Hui,XU Huijun,ZHOU Qingfu.DESIGN AND SYNTHESIS OF A DIAZA-18-CROWN-6 SUBSTITUTED ANTHRAQUINONE SUPRAMOLECULAR SYSTEM AND INTRAMOLECULAR ENERGY TRANSFER[J].Imaging Science and Photochemistry,2000,18(1). |
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| Authors: | LI Hui XU Huijun ZHOU Qingfu |
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| Abstract: | N (2 methyl anthraquinone)diaza 18 crown 6 was designed and synthesized. Photophysical properties of the coordination compound between the crown compound as ligand and europium ion was investigated. Selective excitation to the charge transfer band between the ligand and Eu(Ⅲ) emission from Eu(Ⅲ) ion was observed indicating that intramolecular energy transfer from the excited singlet of the ligand to Eu(Ⅲ) ion occurred. Luminescence decay measurement showed that encapsulation of Eu(Ⅲ) ion into the cavity of the crown moiety does not completely shield the Eu(Ⅲ) ion from interaction with solvent molecules since three water molecules are still coordinated to Eu(Ⅲ) ion in the Eu(AQ CW)(NO 3) 3·3H 2O consistent with elemental analysis. |
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| Keywords: | diazacrown ether anthraquinone europium(Ⅲ) supramolecular system energy transfer |
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