1. Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 561-756, Republic of Korea
2. Department of Organic Materials and Fiber Engineering, Jeonbuk National University, Jeonju 561-756, Republic of Korea
3. Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu 44613, Nepal
4. Department of Carbon Materials and Fiber Engineering, Jeonbuk National University, Jeonju 561-756, Republic of Korea