1. Department of Chemistry, Damak Multiple Campus, Damak, Jhapa 57217, Nepal
2. Department of Chemistry, Raiganj University, Uttar Dinajpur, West Bengal-733134, India
3. Department of Chemistry, Mahendra Morang Adarsh Multiple Campus, Tribhuvan University, Biratnagar 56613, Nepal
4. Department of Chemistry, Government General Degree College at Kushmandi, Dakshin Dinajpur, West Bengal-733121, India
5. Department of Chemistry, Indian Institute of Technology, Madras 600036, India