Molecular Optoelectronics Materials, Fluorescent Molecule, Phosphorescent Organometallic Compound, Organic Laser Materials, Holographic Recording Materials, Organic Semiconductor and Solar Cell, Organic Nanomaterials, Optoelectronic Supramolecules and Polymers, Photosensitive Organic Material, Optical Memory

1985~1995 Researcher, Senior Researcher, Korea Institute of Science and Technology (KIST)
1992~1993 Visiting Researcher, RIKEN Institute, Japan
1995~ Assistant Professor, Associate Professor, Professor, Seoul National University
2009~ Director, Creative Research Initiative Center for the Supramolecular Optoelectronic Materials
2009~ Editor, Macromolecular Research

2002 Korean Chemical Society, Macomolecular Div., Academic P개gress Award
2005 Shinyang Engineering Award
2007 Samsung Polymer Award
2009 Seoul National University Academic Research Award