1. a Department of Chemistry, Karnatak University, Dharwad 580 003, India
2. b Department of Chemistry, Karnatak University, Dharwad 580 003, India
3. c Thermal Analysis Center, Indian Institute of Chemical Technology, Hyderabad 500 007, India
4. d Center of Excellence in Polymer Science, Karnatak University, Dharwad 580 003, India
5. e Center of Excellence in Polymer Science, Karnatak University, Dharwad 580 003, India
6. f University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390-9058, USA
7. g University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75390-9058, USA
8. h Center of Excellence in Polymer Science, Karnatak University, Dharwad 580 003, India