1. Department of Chemistry College of Natural Science, Konju National University 56, Gongjudaehak‐ro, Gongju‐si Chungnam 32588 Republic of Korea
2. Material Division of Research Institute SEASUN BIOMATERIALS Inc N317, 11‐3, Techno 1‐ro, Yuseong‐gu Daejeon 34015 Republic of Korea