Figure 1

Schematic of light-driven breakage of Ag-DTC bond, the relationship between morphology and scattering light of the nanoprobes and the used DTCs.
(a) Light induced breakage of the Ag-DTC bond and the following pH-dependent vertical and horizontal cleavage of DTC. (b) The co-localization of silver nanospheres and nanorods in DFM image (left) and SEM image (right). (c) The co-localization of two nanoparticles scattering green light in DFM image (left) and SEM image (right). (d) Structures of three used monosubstituted DTCs, including the dopamine-DTC (DTC-DA), tyramine-DTC (DTC-TA) and propargylamine-DTC (DTC-PLA).