Anti-counterfeiting 3 Bio-imaging 3 Boric acid 3 Carbon 3 Carbon dots 3 Cryptography 3 Green synthesis 3 Information protection 3 Long lifetime 3 Phosphorescence 3 Phosphorescent material 3 Quantum yield 3 Room-temperature phosphorescent 3 Stokes shift Synthesis process 3 anti-counterfeiting 3 carbon dots 3 information protection 3 room-temperature phosphorescent 3