Excited state dynamics of retinal proteins by the Fourier transform of optical absorption spectra.

1. 利用光学吸收光谱的傅里叶变换方法，得到了细菌紫质激发态下振动波包的时间相关函数。我们得到了细菌视紫红质时间相关函数的温度依赖性。我们发现在30、90和150fs左右存在较大的温度效应，而在其他时间区域没有明显的温度效应。我们不能用谐振子模型通过理论计算再现这种温度效应。我们对13=14键被锁定的视网膜类似物修饰的细菌视紫红质进行了类似的分析。我们观察到这种修饰的细菌视紫红质的时间相关函数与天然细菌视紫红质的时间相关函数没有明显的差异，除了最初的20秒外，这表明13=14键以外的其他键在激发态动力学中是扭曲的。

1. By menas of the Fourier transform method of optical absorption spectra, we obtained the time-correlation function of vibrational wavepacket in the excited state of bacteriorhodopsin.2. We obtained the temperature dependence of the time-correlation funciton of bacteriorhodopsin. We found that a large temperature effect exists at around 30,90 and 150 fs and that no appreciable temperature effect for the other time region. We could not reproduce this temperature effect by theoretical calculations using the harmonic oscillator model.3. We made the similar analysis for the modified bacteriorhodopsin with retinal analog where 13=14 bond is locked. We observed the time-correlation funciton for this modified bacteriorhodopsin does not appreciably differ from that of the native one, except for the early 20 fs, indicating that the other bonds than 13=14 bond are twisted in the excited state dynamics.