1. Department of Chemistry, Mahatma Gandhi Central University, East-Champaran, Motihari 845401, Bihar, India
2. Department of Biotechnology, Mahatma Gandhi Central University, East-Champaran, Motihari 845401, Bihar, India
3. Department of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan