1. Department of Polymer Science and Engineering, Polymeric Nano-Materials Laboratory, Kyungpook National University, Daegu 41566, South Korea
2. Optical Convergence Technology Center, Daegu Catholic University, Gyeongsan-si, Gyeongbuk 38430, Korea
3. Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, New Jersey 08028, United States
4. Dongnam Regional Division, Korea Institute of Industrial Technology, Busan 46938, Korea