1. Department of Chemistry School of Physical and Mathematical Sciences Research Centre University of Kerala, Kariavattom campus Thiruvananthapuram 695581 Kerala India
2. Department of Chemistry University College, Palayam Thiruvananthapuram 695034 Kerala India
3. Department of Chemistry School of Physical and Mathematical Sciences Research Centre University of Kerala Kariavattom campus Thiruvananthapuram 695581 Kerala India
4. Coordinator, International Interuniversity Centre for Sensing, and Imaging (IIUCSI) Department of Chemistry University of Kerala, Kariavattom campus, Thiruvananthapuram – 695581 Kerala India