1. Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
2. Department of Physics, Indian Institute of Technology Indore, Simrol 453552, India
3. School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
4. Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo námĕstí 542/2, 160 00 Prague, Czech Republic