Fig. 1. Structural differences of folate receptor and pocket relationship of folate binding
(a), (b): The figure show the positive and negative sides of folate receptor;(c): The triangle cavity of folate inclusion; (d): The difference of folate α and β subtypes

Fig. 2. Spectrogram of sulfhydryl terminated CdTe nanocrystals

Fig. 3. Circular dichotomous peaks and structures of CdTe quantum dots

Fig. 4. Pyroglutamic acid modified CdSe/ZnS quantum dots

Fig. 5. Chiral space of folate receptor subtypes FRα and FRβ and their interaction with chiral quantum dots