Excited state dynamics of beta-carotene studied by means of transient absorption spectroscopy and multivariate curve resolution alternating least-squares analysis
文献类型：期刊论文
| 作者 | Vdovic, Silvije1,2,3; Wang, Yingying1,2; Li, Boxuan1,2; Qiu, Meng1,2; Wang, Xuefei1,2; Guo, Qianjin1,2; Xia, Andong1,2 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2013 |
| 卷号 | 15期号:46页码:20026-20036 |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c3cp53323a |
| 英文摘要 | Determination of the excited-state dynamics of carotenoids has attracted considerable interest, engendering a number of controversial hypotheses because of the strongly overlapping spectral peaks and complicated dynamics of transient species. In the present work, aiming for better understanding the complexity of excited-state processes in carotenoids, excited-state dynamics of all-trans-beta-carotene in ethanol was investigated by femtosecond pump-probe spectroscopy. Following the excitation of the strongly allowed S-2 state of the beta-carotene, transient absorption spectra were recorded in the visible spectral range. For comparison, the time-resolved transient absorption spectra are analyzed in a conventional way, fitting kinetic traces with a multi-exponential function at chosen wavelengths from obtained spectra, and then again by means of the soft-modeling multivariate curve resolution alternating least-squares analysis (MCR-ALS) method for modeling pure profiles and the generalized two-dimensional (2D) correlation spectroscopy data analysis for providing additional information on the dynamics of spectral features. MCR-ALS analysis shows that both the dynamics of the S* state, identified using the 2D correlation spectra, and the S-1 state develop on a different timescale than the relaxation of the vibrationally hot S-1v' state. Hot S-1v' and S* states are shown to have different species associated difference spectra. Results of our analysis indicate that the S* state observed in this work is not the hot S-1v' state but instead a separate singlet state. |
| 语种 | 英语 |
| WOS记录号 | WOS:000326747200010 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54299]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Qianjin |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 3.Inst Phys, Zagreb 10000, Croatia |
| 推荐引用方式 GB/T 7714 | Vdovic, Silvije,Wang, Yingying,Li, Boxuan,et al. Excited state dynamics of beta-carotene studied by means of transient absorption spectroscopy and multivariate curve resolution alternating least-squares analysis[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2013,15(46):20026-20036. |
| APA | Vdovic, Silvije.,Wang, Yingying.,Li, Boxuan.,Qiu, Meng.,Wang, Xuefei.,...&Xia, Andong.(2013).Excited state dynamics of beta-carotene studied by means of transient absorption spectroscopy and multivariate curve resolution alternating least-squares analysis.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,15(46),20026-20036. |
| MLA | Vdovic, Silvije,et al."Excited state dynamics of beta-carotene studied by means of transient absorption spectroscopy and multivariate curve resolution alternating least-squares analysis".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 15.46(2013):20026-20036. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。