1. Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea
2. Creative Research Initiative Center for Chemical Dynamics in Living Cells, Chung-Ang University, Seoul 06974, Korea
3. Department of Chemistry, Chung-Ang University, Seoul 06974, Korea
4. National Institute of Innovative Functional Imaging, Chung-Ang University, Seoul 06974, Korea
5. Da Vinci College of General Education, Chung-Ang University, Seoul 06974, Korea