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题名: 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
作者: 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
刊名: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
发表日期: 2014-06-19
DOI: 10.1021/jz500869b
卷: 5, 期:12, 页:2155-2159
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: The 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.
关键词[WOS]: GREEN FLUORESCENT PROTEIN ;  DYNAMICS
语种: 英语
WOS记录号: WOS:000337870100018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145517
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.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:
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.
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