Multifunctional graphene quantum dots for simultaneous targeted cellular imaging and drug delivery

- Modified graphene quantum dots are applied as a multifunctional drug carrier.
- Multiple tasks are carried out simultaneously.
- Cellular uptake of the nanoassembly and drug release are monitored in real time.
- The nanoassembly targets tumor cells differentially and efficiently.
- The nanoassembly exhibits significantly reduced cytotoxicity to non-target cells.