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Vibrationally Resolved Photoelectron Spectroscopy of the Model GFP Chromophore Anion Revealing the Photoexcited S-1 State Being Both Vertically and Adiabatically Bound against the Photodetached D-0 Continuum
Deng, S. H. M.1; Kong, Xiang-Yu1,3; Zhang, GuanXin2; Yang, Yan1,4,5; Zheng, Wei-Jun3; Sun, Zhen-Rong4; Zhang, De-Qing2; Wang, Xue-Bin1
2014-06-19
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
ISSN1948-7185
Volume5Issue:12Pages:2155-2159
AbstractThe first excited state of the model green fluorescence protein (GFP) chromophore anion (S-1) and its energy level against the electron-detached neutral radical D-0 state are crucial in determining the photophysics and the photoinduced dynamics of GFP. Extensive experimental and theoretical studies, particularly several very recent gas-phase investigations, concluded that S-1 is a bound state in the Franck-Condon vertical region with respect to D-0. However, what remains unknown and challenging is if S-1 is bound adiabatically, primarily due to lack of accurate experimental measurements as well as due to the close proximity in energy for these two states that even sophisticated high-level ab initio calculations cannot reliably predict. Here, we report a negative ion photoelectron spectroscopy study on the model GFP chromophore anion, the deprotonated p-hydroxybenzylidene-2,3-dimethylimidazolinone anion (HBDI-) taken under low-temperature conditions with improved energy resolution. Despite the considerable size and low symmetry of the molecule, resolved vibrational structures were obtained with the 0-0 transition being the most intense peak, The adiabatic (ADE) and vertical detachment (VDE) energies therefore are determined both to be 2.73 +/- 0.01 eV, indicating that the detached D-0 state is 0.16 eV higher in energy than the photon excited S-1 state. The accurate ADE and VDE values and the well-resolved photoelectron spectra reported here provide much needed robust benchmarks for future theoretical investigations.
DOI10.1021/jz500869b
Indexed BySCI
Language英语
WOS IDWOS:000337870100018
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/50820
Collection中国科学院化学研究所
Corresponding AuthorWang, Xue-Bin
Affiliation1.Pacific NW Natl Lab, Div Phys Sci, Richland, WA 99352 USA
2.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Chem, State Key Lab Mol React Dynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
4.E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
5.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
Recommended Citation
GB/T 7714
Deng, S. H. M.,Kong, Xiang-Yu,Zhang, GuanXin,et al. Vibrationally Resolved Photoelectron Spectroscopy of the Model GFP Chromophore Anion Revealing the Photoexcited S-1 State Being Both Vertically and Adiabatically Bound against the Photodetached D-0 Continuum[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2014,5(12):2155-2159.
APA Deng, S. H. M..,Kong, Xiang-Yu.,Zhang, GuanXin.,Yang, Yan.,Zheng, Wei-Jun.,...&Wang, Xue-Bin.(2014).Vibrationally Resolved Photoelectron Spectroscopy of the Model GFP Chromophore Anion Revealing the Photoexcited S-1 State Being Both Vertically and Adiabatically Bound against the Photodetached D-0 Continuum.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,5(12),2155-2159.
MLA Deng, S. H. M.,et al."Vibrationally Resolved Photoelectron Spectroscopy of the Model GFP Chromophore Anion Revealing the Photoexcited S-1 State Being Both Vertically and Adiabatically Bound against the Photodetached D-0 Continuum".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 5.12(2014):2155-2159.
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