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首页> 外文期刊>Applied physics. B, Lasers and optics >Excited-state absorption in oxidized cytochrome c solution
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Excited-state absorption in oxidized cytochrome c solution

机译:氧化细胞色素c溶液中的激发态吸收

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Nonlinear absorption dynamics of oxidized cytochrome c in water solution was investigated at 532 nm with Z-scan and pump-probe techniques. The optical characterization of this compound is very important owing to its similarity with hematoporphyrin-based drugs commonly used in photo-dynamic therapy for cancer treatment. We observed a saturable absorption process related to the excited singlet population, followed by a fast decay to the ground state. The optical excitation and subsequent relaxation were interpreted with a three-energy-level diagram, allowing the first singlet excited-state absorption cross section and lifetime determination.
机译:使用Z扫描和泵浦探针技术研究了氧化的细胞色素c在532 nm水溶液中的非线性吸收动力学。由于该化合物与通常在光动力疗法中用于癌症治疗的基于血卟啉的药物相似,因此该化合物的光学表征非常重要。我们观察到与激发单线态种群有关的可饱和吸收过程,随后迅速衰减至基态。用三能级图解释了光激发和随后的弛豫,从而实现了第一单重态激发态吸收截面和寿命的确定。

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