期刊
PHYSICAL REVIEW LETTERS
卷 117, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.243004
关键词
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资金
- Lundbeck foundation
- Villum foundation
- Russian Foundation for Basic Research [14-03-00887]
The photophysics of a deprotonated model chromophore for the green fluorescent protein is studied by femtosecond laser pulses in an electrostatic ion-storage ring. The laser-pulse duration is much shorter than the time for internal conversion, and, hence, contributions from sequential multiphoton absorption, typically encountered with ns-laser pulses, are avoided. Following single-photon excitation, the action-absorption maximum is shown to be shifted within the S-0 to S-1 band from its origin at about 490 to 450 nm, which is explained by the different photophysics involved in the detected action.
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