Photo-excitation dynamics of Phenol Blue

Literature Information

Publication Date 2000-03-15
DOI 10.1039/A909485G
Impact Factor 3.676
Authors

Yoshifumi Kimura, Tsuyoshi Yamaguchi, Noboru Hirota


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Abstract

We measured transient absorption spectra after the photo-excitation of Phenol Blue in various liquids using a sub-picosecond dye laser. The ground state bleach signal shows a recovery mainly with two different time constants: the faster one is about 0.5 ps, and the slower one more than 10 ps. Both time constants depend on the solvents. We assigned the faster time constant to the lifetime of the excited state. The slower time constant can be understood by the ground state dynamics due to solvation, vibrational cooling and/or structural relaxation. The relationship between the back electron transfer rate and the reaction free energy estimated by analysis of the absorption spectrum is presented.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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