Ultrafast transient dynamics of Zn(II) porphyrins: Observation of vibrational coherence by controlling chirp of femtosecond pulses
Ultrafast transient dynamics of Zn(II) porphyrins: Observation of vibrational coherence by controlling chirp of femtosecond pulses
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Zn(II) 卟啉的超快瞬态动力学：通过控制飞秒脉冲的啁啾来观察振动相干性
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
T. Joo
中科院分区：
文献类型：
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作者：
Min;D. Jeong;Sung Cho;Dongho Kim;Hanju Rhee;T. Joo
对卟啉分子的飞秒相干光谱研究表明，驻留在瞬时吸收和荧光衰减曲线上的振荡特征与泵浦和探测激光脉冲中激发态的寿命和势能面极小值的位移密切相关。通过对超短光脉冲的啁啾进行控制，实现了对波包动力学的更大程度的控制。该特征提供了有关激发势能面的线索，例如它的曲率和位移。对于四苯基卟啉和八乙基卟啉这两种具有代表性的卟啉单体，我们通过比较它们的瞬时吸收光谱和荧光光谱与基态光谱，得到了激发态动力学和随后的结构变化的详细信息。
Femtosecond coherence spectroscopic study on porphyrin molecules has demonstrated that the oscillatory features residing at the transient absorption and fluorescence decay profiles are strongly correlated with the lifetimes of the excited states and the displacements of the minima of the potential energy surfaces that are involved in the pump and probe laser pulses. We have attained a greater degree of control in the wave packet dynamics in the transient absorption by controlling the chirp of the ultrashort optical pulses. This feature provides a clue to the excited potential energy surface such as its curvature and displacement. For two representative porphyrin monomers, ZnII tetraphenylporphyrin and ZnII octaethylporphyrin, we were able to obtain detailed information on the excited state dynamics and subsequent structural changes based on the comparison between the frequency spectra retrieved from the oscillatory features in the transient absorption and fluorescence temporal profiles and the ground stat...
影响因子：
56.9
作者：
LIN, VSY;DIMAGNO, SG;THERIEN, MJ
通讯作者：
THERIEN, MJ