Femtosecond time-resolved difference absorption spectroscopy of all-trans-beta-apo-8 '-carotenal
文献类型：期刊论文
| 作者 | Zhang, L; Quan, DH; Wang, L; Yang, GZ; Weng, YX |
| 刊名 | Science in china series g-physics astronomy
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 47期号:2页码:208-222 |
| 关键词 | Singular value decomposition Femtosecond time resolved spectroscopy All-trans-beta-apo-8 ' -carotenal |
| ISSN号 | 1672-1799 |
| DOI | 10.1360/03yw0241 |
| 通讯作者 | Weng, yx() |
| 英文摘要 | The fenntosecond time-resolved difference absorption spectra of all-trans-a apo-8'-carotenal have been recorded and analyzed by the singular-value decomposition (svid) method followed by global fitting using a sequential model for the excited-state energy relaxation. with this model, we have obtained the excited-state absorption spectra and the lifetimes of the corresponding excited states both in nonpolar solvent n-hexane and polar solvent methanol. three excited states, namely s-3(190fs), s-2(2.32ps) and s-1 (26ps) in n-hexane, and two excited states s-2(190fs) and s-1(9.4ps) in methanol have been observed. the excited-state absorption spectra of all-trans-beta-apo-8'-carotenal in methanol display a red shift and broadeness, while the lifetime of s, state becomes shorter. it is proposed that these effects are related to the presence of a carbonyl functional group that leads to the solvent effect on the excited-state energy level. at the same time, it is shown that the svd method is a useful tool in resolving the time-resolved absorption spectra. |
| WOS关键词 | CHLOROPHYLL-A-PROTEIN ; ENERGY-TRANSFER ; BETA-CAROTENE ; EXCITED-STATES ; RADIATIONLESS PROCESSES ; INTERNAL-CONVERSION ; FLUORESCENCE ; DYNAMICS ; DEPENDENCE ; PERIDININ |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000221173600009 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373978 |
| 专题 | 物理研究所 |
| 通讯作者 | Weng, YX |
| 作者单位 | Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, L,Quan, DH,Wang, L,et al. Femtosecond time-resolved difference absorption spectroscopy of all-trans-beta-apo-8 '-carotenal[J]. Science in china series g-physics astronomy,2004,47(2):208-222. |
| APA | Zhang, L,Quan, DH,Wang, L,Yang, GZ,&Weng, YX.(2004).Femtosecond time-resolved difference absorption spectroscopy of all-trans-beta-apo-8 '-carotenal.Science in china series g-physics astronomy,47(2),208-222. |
| MLA | Zhang, L,et al."Femtosecond time-resolved difference absorption spectroscopy of all-trans-beta-apo-8 '-carotenal".Science in china series g-physics astronomy 47.2(2004):208-222. |
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来源：物理研究所
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