Fig. 7. Chiral CdTe nanoparticle preparation and characterization. (a) Schematic illustration of chiral CdTe-based specific DNA cleavage under CPL irradiation. Site-selective DNA cleavage. (b) High-resolution TEM images of truncated tetrahedron-shaped (white dashed areas) l-Cys and d-Cys CdTe nanoparticles. (c and d) Electrophoresis images of l-Cys CdTe (c) and d-Cys CdTe (d) nanoparticles with 1839 bp DNA illuminated with 405 nm RCP/LCP for 2 h. The two DNA fragments after cleavage are denoted as frag 1 and frag 2. (e) CD spectra of l-Cys and d-Cys CdTe nanoparticles (NPs). (f) CD spectra of l-Cys and d-Cys CdTe nanoparticles mixed with 1839 bp DNA and illuminated under 405 nm RCP/LCP for 2 h. Strategy for site-selective DNA cleavage.95 Adapted with permission from ref. 95. Copyright© 2018 Springer Nature.
