1. Interdisciplinary Graduate School of Engineering Sciences and
2. Department of Chemistry, Faculty of Science, United Arab Emirates University, PO Box 17551, Al Ain, United Arab Emirates.
3. Institute of Materials Chemistry and Engineering, Kyushu University, 6–1, Kasuga-koh-en, Kasuga-shi, Fukuoka 816-8580, Japan
4. Department of Physical Chemistry, University of Alicante, E-03080 Alicante, Spain
5. Department of Physics, Fatima Mata National College, Kollam-1, India
6. Department of Physics, TKM College of Arts and Science, Kollam-5, Kerala, India