1. Department of Chemistry, Saraswathy College of Engineering and Technology, Olakkur, Tindivanam 604 305, Tamil Nadu, India
2. Department of Physics, Panimalar Engineering College, Chennai 600 123, Tamil Nadu, India
3. Organic Materials Synthesis Lab, School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
4. PG & Research Department of Chemistry, Government Arts College, Chidambaram- 608 102, Tamil Nadu, India