1. Department of Chemistry, Khalsa College, Amritsar, Punjab 143002, India
2. Department of Chemistry, DAV College, Jalandhar, Punjab 144008, India
3. Department of Chemistry, Lyallpur Khalsa College Jalandhar, Punjab 144008, India
4. Department of Chemistry, Gandhi Memorial National College, Ambala Cantt. Haryana 133001, India
5. Department of Chemistry, Guru Nanak Dev University, Amritsar 143 005, India