| 香豆素衍生物和β环糊精分子络合过程的稳态和时间分辨荧光研究 |
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| 引用本文： | 张兴康,陈建新,万超志,刘丽,徐广智,唐有祺. 香豆素衍生物和β环糊精分子络合过程的稳态和时间分辨荧光研究[J]. 物理化学学报, 1986, 2(6): 493-498. DOI: 10.3866/PKU.WHXB19860603 |
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| 作者姓名： | 张兴康 陈建新 万超志 刘丽 徐广智 唐有祺 |
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| 作者单位： | Institute of Chemistry, Academia Sinica, Beijing; Chemistry Department of Beijing University |
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| 摘 要： | 用稳态和时间分辨荧光光谱法研究某些香豆素衍生物(C_311, C_47, C_102, C_120和C_4)同βCyD在水溶液中的络合过程。观察到这些分子在βCyD水溶液中的荧光峰值兰向位移、强度增加和荧光寿命增大。结果表明CND分子在水溶液中同βCyD分子发生络合作用。测得的CND一βCyD体系的络合常数按下列次序递减; K_311>K_47>K_102>K_120>K_4, 这些事实揭示了客体分子的憎水性及同βCyD分子腔体尺寸医配是影响络合作用的重要因素。
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| 收稿时间： | 1985-07-26 |
| 修稿时间： | 1985-12-26 |
FLUORESCENCE INVESTIGATION ON THE COMPLEXATION PROCESS OF COUMARIN-CYCLODEXTRIN SYSTEMS |
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| Zhang Xingkang,Chen Jianxin,Wan Chaozhi,Liu Li,Xu Guangzhi,Tang Youqi. FLUORESCENCE INVESTIGATION ON THE COMPLEXATION PROCESS OF COUMARIN-CYCLODEXTRIN SYSTEMS[J]. Acta Physico-Chimica Sinica, 1986, 2(6): 493-498. DOI: 10.3866/PKU.WHXB19860603 |
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| Authors: | Zhang Xingkang Chen Jianxin Wan Chaozhi Liu Li Xu Guangzhi Tang Youqi |
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| Affiliation: | Institute of Chemistry, Academia Sinica, Beijing; Chemistry Department of Beijing University |
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| Abstract: | The complexation of some Coumarin derivatives(C_(311), C_(47), C_(102), C_(120) and C_4) With β-CyD in aqueous solution has been examined by means of steady-state and time resolved fluorescence methods. It is observed that the fluorescence peaks, relative intensities and lifetimes of the guest molecules in aqueous solution of β- CyD reveal hypsoehromic shift, enhancement and increment respectively relative to those of guest molecules in aqueous solution. The results indicate that the CNDs complex with β-CyD to a certain extent. The measured complexation constants for CND—β-Cye systems decrease in the order of K_311 K_47 K_102 K_120 K_4. These facts reflect that the hydrophobic property of guest molecule and the matching size between the guest molecule and β-CyD are important factors affecting their complexation. |
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