1. Chemistry Division, Department Science and Humanities, Vignan`s Foundation for Science Technology and Research, University (VFSTR) University, Vadlamudi, Guntur-522 213, Andhra Pradesh, India
2. Department of Chemistry, Krishna University, Machilipatnam-521001, Andhra Pradesh, India
3. Dr. Reddy`s Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India