DICP OpenIR
Excited state dynamics of beta-carotene studied by means of transient absorption spectroscopy and multivariate curve resolution alternating least-squares analysis
Vdovic, Silvije1,2,3; Wang, Yingying1,2; Li, Boxuan1,2; Qiu, Meng1,2; Wang, Xuefei1,2; Guo, Qianjin1,2; Xia, Andong1,2
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2013
DOI10.1039/c3cp53323a
Volume15Issue:46Pages:20026-20036
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordINTERNAL-CONVERSION ; ELECTRONIC EXCITATIONS ; ENERGY-TRANSFER ; TARGET ANALYSIS ; POLYENES ; SYSTEMS ; SPECTRA ; PHOTOSYNTHESIS ; NEUROSPORENE ; DEACTIVATION
AbstractDetermination 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.
Language英语
WOS IDWOS:000326747200010
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/137966
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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