1. Department of Chemistry, Gauhati University, Guwahati-781014, Assam, India
2. Department of Chemistry, Eastern Karbi Anglong College, Sarihajan-782480, Assam, India
3. Department of Chemistry, Assam Don Bosco University, Sonapur-782402, Assam, India
4. Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States