Determination of coordination structure on metal-substituted chlorophyll a by spectroscopy
文献类型：期刊论文
| 作者 | Hong, FS; Wei, ZG; Zhao, GW; Tao, Y ; Hu, TD; Liu, T; Xie, YN; Tao Y(陶冶); Hu TD(胡天斗); Liu T(刘涛)
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| 刊名 | PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS
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| 出版日期 | 2001 |
| 卷号 | 28期号:3页码:381-386 |
| 关键词 | metal-chlorophyll-a extended x-ray absorption fine spectra (EXAFS) molecular structure |
| 其他题名 | 金属叶绿素a 配位结构的研究 |
| 通讯作者 | Suzhou Univ, Dept Biol, Suzhou 215151, Peoples R China ; Univ Sci & Technol China, Dept Chem, Anhua 230026, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Synchrotron Radiat Lab, Beijing 100039, Peoples R China |
| 英文摘要 | La-chlorophyll-a, Sm-chlorophyll-a and Cu-chlorophyll-a were synthesized from pheophytin-a, lanthanum, samarium and cuprum in the acetone solution. Their characteristics have been investigated by ultravioler-visible (UV-Vis), FT-IR and extended X-ray absorption fine structure spectra (EXAFS). The Soret band of UV-Vis spectra of La-chlorophyll-a, Sm-chlorophyll-a and Cu-chlorophyll-a was more ultraviolet shift than that of pheophytin-a, the Q band was more red shift than that of pheophytin-a. FT-IR spectra of Lachlorophyll-a, Sm-chlorophyll-a and Cu-chlorophyll-a was similar with chlorophyll, but different from pheophytin. UV-Vis and IR spectra confirmed the coordination of La (III), Sm (III) and Cu ( II) to the porphyrin rings. By extended X-ray absorption fine structure spectra method, it was found that the molecular structure of synthesized La- Chlorophyll-a, Sm-chlorophyll-a could be well fitted by the double decker sandwich structure model that La, Sm was surrounded by eight nitrogen atoms from two porphyrin rings. It is believed that chemical form of La-chlorophyll-a, Sm-chlorophyll-a was a sandwich structured complexes with the La-N and Sm-N bond length of average 0.261 nm and 0.243nm, respectively. Extended X-ray absorption fine structure spectra showed that Cu-chlorophyll-a could be well fitted by the mono decker structure model that Cu was surrounded by four nitrogen atoms from porphyrin rings, Cu-N bond length of average was 0.197 nm. Elemental analysis indicated that La-chlorophyll-a and Sm-chlorophyll-a have the double decker sandwich structure, Cu-chlorophyll-a has the mono decker structure. |
| 学科主题 | Biochemistry & Molecular Biology; Biophysics |
| 类目[WOS] | Biochemistry & Molecular Biology ; Biophysics |
| 研究领域[WOS] | Biochemistry & Molecular Biology ; Biophysics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000169596600024 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237253]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Hong, FS,Wei, ZG,Zhao, GW,et al. Determination of coordination structure on metal-substituted chlorophyll a by spectroscopy[J]. PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS,2001,28(3):381-386. |
| APA | Hong, FS.,Wei, ZG.,Zhao, GW.,Tao, Y.,Hu, TD.,...&谢亚宁.(2001).Determination of coordination structure on metal-substituted chlorophyll a by spectroscopy.PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS,28(3),381-386. |
| MLA | Hong, FS,et al."Determination of coordination structure on metal-substituted chlorophyll a by spectroscopy".PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS 28.3(2001):381-386. |
入库方式： OAI收割
来源：高能物理研究所
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