Fluorescence-quenching of tryptophan ion-18-crown-6 complex-a different observation from its neutral counterpart
文献类型：期刊论文
| 作者 | Yu Qing1; Cao Jie1; Liu Tao1,2; Wang Zhi-xiang1 |
| 刊名 | Chemical research in chinese universities
 |
| 出版日期 | 2009-05-25 |
| 卷号 | 25期号:3页码:362-367 |
| 关键词 | Tryptophan 18-crown-6 complex Fluorescence Mass spectrometry Ab initio calculation |
| ISSN号 | 1005-9040 |
| 通讯作者 | Cao jie(jcao@gucas.ac.cn) |
| 英文摘要 | It is well-known that primary amines form inclusive complexes with crown ethers. this kind of noncovalently inclusive complexes, exemplified tryptophan complex with 18-crown-6, was studied by combination of two experimental methods, fluorimetry and mass spectrometry, with theoretical calculation. fluorescence intensity of tryptophan in the absence and the presence of 18-crown-6 in aqueous hac-naac buffer solution at ph=3.73 has been studied by fluorometry. the fluorescence intensity decreases significantly with increasing the concentration of 18-crown-6. the association constant k for the 1: 1 complex of tryptophan ion-18-crown-6 was determined by means of fluorimetry. mass spectrometric study of the complex gives direct evidence of the complex in the gas phase whose structure and binding energy are properly predicted by ab initio calculation. |
| WOS关键词 | CROWN-ETHERS ; AMINO-ACIDS ; CATIONS ; DERIVATIVES ; 18-CROWN-6 ; TRANSPORT ; BEHAVIOR ; METHANOL |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000267873500021 |
| 出版者 | HIGHER EDUCATION PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2401077 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Cao Jie |
| 作者单位 | 1.Chinese Acad Sci, Coll Chem & Chem Engn, Grad Sch, Beijing 100049, Peoples R China 2.Jining Univ, Dept Chem, Qufu 273155, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu Qing,Cao Jie,Liu Tao,et al. Fluorescence-quenching of tryptophan ion-18-crown-6 complex-a different observation from its neutral counterpart[J]. Chemical research in chinese universities,2009,25(3):362-367. |
| APA | Yu Qing,Cao Jie,Liu Tao,&Wang Zhi-xiang.(2009).Fluorescence-quenching of tryptophan ion-18-crown-6 complex-a different observation from its neutral counterpart.Chemical research in chinese universities,25(3),362-367. |
| MLA | Yu Qing,et al."Fluorescence-quenching of tryptophan ion-18-crown-6 complex-a different observation from its neutral counterpart".Chemical research in chinese universities 25.3(2009):362-367. |
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来源：中国科学院大学
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