1. Department of Chemistry, Hetampur Raj High School, Hetampur, Birbhum, West Bengal, India
2. Department of Chemistry, Physical Chemistry Section, Visva-Bharati University, Santiniketan, Birbhum, West Bengal, India
3. Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia