1. aDepartment of Chemistry, PES Institute of Technology and Management, Shivamogga, 577 204, Karnataka, India
2. bDepartment of Chemistry, School of Applied Science, REVA University, Yelahanka, 560064, Bangalore, Karnataka, India
3. cDepartment of Chemistry, The National Institute of Engineering (NIE), North Campus, Koorgalli-570018, Mysore, Karnataka, India
4. dDepartment of Metallurgy & Materials Engineering, Malawi Institute of Technology – Malawi University of Science and Technology, P.O. Box 5196, Limbe, Malawi
5. eDepartment of Physics, PES Institute of Technology and Management, Shivamogga, 577 204, Karnataka, India
6. fDepartment of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka, India