1. Department of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, India
2. Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
3. Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
4. Ogene Systems (I) Pvt.Ltd., Hyderabad 500037, India
5. Department of Chemistry, Jorhat Engineering College, Garmur, Jorhat 785007, India