1. School of Nano & Materials Science and Engineering, Kyungpook National University, Sangju, Korea;
2. Department of Chemistry Education, Graduate Department of Chemical Materials and Institute for Plastic Information and Energy Materials, Pusan National University, Busan, Korea;
3. Department of Display Engineering, Pukyong National University, Busan, Korea;
4. Department of Fire Safety, Kyungil University, Gyeongsan, Gyeongsangbuk-do, Korea