Fig. 4. (a) Schematic illustration of light-triggered assembly of dAuNPs. (b) TEM images before and after illuminated with 405 nm laser different periods of time. (c) PA images and quantified PA signal of the tumorous sites of mice receiving treatments with different combinations of λ405nm laser irradiation and intravenous delivery of dAuNPs (100 μL, 2 mg mL−1). (d) Photothermal images of tumor-bearing mice for showing the in vivo cross-linking effect of dAuNPs on tumor local temperature against irradiation time of 808 nm laser. Reproduced with permission from ref. 36, copyright: 2017, Wiley.
