1. Department of Chemistry, Bharathiar University, Coimbatore-641046, Tamil Nadu, India
2. Department of Chemistry, Dr. Mahalingam College of Engineering and Technology, Pollachi-642002, Tamil Nadu, India
3. The University College, Department of Chemistry, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea
4. Department of Chemistry, VNU University of Science, 19 Le Thanh Tong, Hanoi, Vietnam