1. STAR Laboratory, Department of Chemistry, Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam, Puttaparthi, Anantapur 515134, Andhra Pradesh, India
2. Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
3. Department of Physics, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
4. Department of Chemistry, Indian Institute of Technology, Gandhinagar 382355, India