S-1 Supporting Information Supercritical Fluid Facilitated Disintegration of Hexagonal Boron Nitride Nanosheets to Quantum Dots and Its Application in Cells Imaging Pitchai Thangasamy †, ‡ , Manikandan Santhanam § and Marappan Sathish* ,†, ‡ † Functional Materials Division, ‡ Academy of Scientific and Innovative Research (AcSIR), § Corrosion and Material Protection Division, CSIR-Central Electrochemical Research Institute, Karaikudi – 630 003, India. E. mail: marappan.sathish@gmail.com; msathish@cecri.res.in