1. Department of Chemistry, Dongguk University-Seoul, 30 Pildong-ro,
Jung-gu, Seoul 04620, Republic of Korea
2. Department of Biological and Environmental Science, Dongguk University-Seoul, 32 Dongguk-ro, Ilsandong-gu, Goyang-si, Gyeonggi 10326, Republic of Korea
3. Green Energy & Nano Technology R&D Group, Korea Institute of Industrial Technology, 6, Cheomdan-gwagiro 208-gil, Buk-gu, Gwangju 61012, Republic of Korea