1. Department of Chemistry, Cotton University, Panbazar, Guwahati, Assam, India
2. Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, India
3. Department of Applied Sciences, GUIST, Gauhati University, Guwahati, Assam, India
4. Department of Chemistry, Assam Don Bosco University, Tapesia Gardens, Kamarkuchi, Sonapur, Assam, India