Fig. 4

Photolysis study and light-triggered cargo release. a Photolysis reaction of BTAEA via direct excitation or one-photon TTET process. b Photolysis profile of BTAEA in BTNPs and Pt/BTNPs and the release of BODIPY-OH upon irradiation with red-light irradiation (635 nm) for different time periods (0–10 min) in normoxia aqueous solutions (n = 3). c Photolysis profile of BTAEA in BTNPs and the release of BODIPY-OH upon irradiation with green-light irradiation (530 nm) for different time periods (0–10 min) in normoxia aqueous solutions (n = 3). Fluorescence intensity of NR/Pt/BTNPs (d) and BTNPs (e) upon 635 nm light irradiation for different time periods (0–10 min). Excitation wavelength: 562 nm. f Calculated release percentage of Nile red from NR/Pt/BTNPs and NR/BTNPs under 635 nm red-light irradiation for different irradiation time periods (0–10 min). All light irradiations were conducted at 50 mW/cm²