F209. Multifunctional nanospheres for cancer cell capturing
Top left: TEM image of nanospheres embedded with both fluorescent CdSe/ZnS QDs and magnetic nano-γ-Fe2O3. The inset is a SEM image of H2N-St-AAm nanospheres. Bottom left: HRTEM images of some CdSe/ZnS QDs embedded in H2N-St-AAm. (a) A (102), d = 0.25 nm; B (1-1-1), d = 0.21 nm. The interplane angle is 92º. (b) C (1-11), d = 0.21 nm; D (201), d = 0.17 nm. The interplane angle is 57º. Right: A cover picture showing the final trifunctional nanospheres was constructed by conjugating folic acid to the surface of the bifunctional nanospheres and captured cancer cells specifically. [H. Xie, C. Zuo, Y. Liu, Z. Zhang, D. Pang, X. Li, J. Gong, C. Dickinson, W. Zhou, Small, 5, 506-9 (2005)].