Chemistry, Physical Chemistry, Spectroscopy, Quantum Chemistry

1996~ Professor, Korea University, Seoul, Korea
1991~1991 University of Rochester, USA, Visiting Scientist
1992~1992 Insitute for molecular Science, Japan, Visiting Scientist
1993~1993 Brown University USA, Visiting Scientist
1993~1993 Institute for molecular Science, Japan, Visiting Scientist
1994~1996 MIT, USA, Post-doc
1997~1997 Institute for molecular Science, Japan, Visiting Professor
2000~2000 Oxford University, UK, Visiting Professor
2004~2004 University of California Berkeley, USA, Visiting Professor
2007~2009 Chemical Physics(Elsevier Journal)
2004~ Korean Academy of Science and Technology
2008~2012 Korean Photoscience Society
1996~ American Chemical Society
1996~ Permanent Member of Korean Chemical Society(KAST), Junior member

1992 Korea Government Scholarship (Ministry of Education, Korea)
1992 Wiliam R. Harper Fellowship (University of Chicago, USA)
1994 Marc P. Galler Prize (University of Chicago, USA)
1995 Nobel Laureate Signature Award (American Chemical Society, USA)
1999 Young Scientist Award (Ministry of Science and Technology, Korea)
1999 British Chevening Award (British Council, Seoul, Korea)
2000 Shonan Lecturer (The Graduate University for Advanced Studies, Hayama, Japan).
2005 Hyundai-Kia Motor Professor (Korea University)
2009 Scientist of the month (NRF, Korea)
2009 Distinguished Lectureship Award (Korea University)
2010 Kyung-Am Prize (Kyung-Am Foundation)