Ultrafast Spectroscopy Research Team

We develop advanced spectroscopic methods based on the "extreme" optical technology, and carry out fundamental studies for control of chemical reactions and material functions. We pursue the basic knowledge for developing novel functional materials by investigating the molecular elementary processes that occur in fundamental molecules, complex molecules, and heterogeneous molecular systems. Using the most advanced spectroscopy, we observe and control the motion and function of the molecules.

Research Fields

Physics / Chemistry / Materials Sciences / Biology & Biochemistry

Research Subjects

• Elucidation and control of molecular dynamics in the condensed phase by ultrafast spectroscopy

Publications

1. Singh, P. C. Nihonyanagi, S. Yamaguchi, S. Tahara T.;
   Ultrafast vibrational dynamics of water at a charged interface revealed by two-dimensional heterodyne-detected vibrational sum frequency generation
   J. Chem. Phys. 137, 151101 (2012)
2. Kuramochi, H. Takeuchi, S. Tahara, T.;
   Ultrafast structrual evolution of photoactive yellow protein chromophore revealed by ultraviolet resonance femtosecond stimulated Raman spectroscopy
   J. Phys. Chem. Lett. 3, 2025 (2012).
3. Wei, Z. Nakamura, T. Takeuchi, S. Tahara, T.;
   Tracking of the nuclear wavepacket motion in cyanine photoisomerization by ultrafast pump-dump-probe spectroscopy
   J. Am. Chem. Soc., 133, 8205 (2011)
4. Iwamura, M. Watanabe, H. Ishii, K. Takeuchi, S. Tahara, T.;
   Coherent nuclear dynamics in ultrafast photoinduced structural change of bis(diimine)copper(I) complex
   J. Am. Chem. Soc., 133, 7728 (2011)
5. Sen, P. Yamaguchi, S. and Tahara, T.;
   Ultrafast dynamics of malachite green at the air/water interface studied by femtosecond time-resolved electronic sum frequency generation (TR-ESFG): an indicator for local viscosity
   Faraday Discuss., 145, 411 (2010).
6. Ishii, K. Takeuchi, S. and Tahara, T.;
   Infrared-induced coherent vibration of a hydrogen-bonded system: Effects of mechanical and electrical anharmonic couplings
   J. Chem. Phys., 131, 044512 (2009).
7. Nihonyanagi, S. Yamaguchi, S. and Tahara, T.;
   Direct evidence for orientational flip-flop of water molecules at charged interfaces: a heterodyne-detected vibrational sum frequency generation study
   J. Chem. Phys., 130, 204704 (2009).
8. Ishii, K. Takeuchi, S. and Tahara, T.:
   Infrared-induced coherent vibration of a hydrogen-bonded system: Effects of mechanical and electrical anharmonic couplings
   J. Chem. Phys., 131, 044512 (2009).
9. Takeuchi, S. Ruhman, S. Tsuneda, T. Chiba, M. Taketsugu, T. and Tahara, T.:
   Spectroscopic tracking of structural evolution in ultrafast stilbene photoisomerization
   Science, 322, 1073 (2008).
10. Sekiguchi, K. Yamaguchi, S. and Tahara, T.:
    Femtosecond time-resolved electronic sum-frequency generation (TR-ESFG) spectroscopy: A new method to investigate ultrafast dynamics at liquid interfaces
    J. Chem. Phys., 128, 114715 (2008).