1. National Creative Research Initiative, Center for Smart Molecular Memory, Department of Chemistry Sungkyunkwan University 2066 Seoburo, Jangan‐gu Suwon Gyeonggi‐do 440–746 Republic of Korea
2. Department of Energy Science Sungkyunkwan University 2066 Seoburo, Jangan‐gu Suwon Gyeonggi‐do 440–746 Republic of Korea
3. SKKU Advanced Institute of Nano Technology (SAINT) Sungkyunkwan University 2066 Seoburo, Jangan‐gu Suwon Gyeonggi‐do 440–746 Republic of Korea