Skip to main content
. 2017 May 31;28(6):1734–1740. doi: 10.1021/acs.bioconjchem.7b00185

Figure 4.

Figure 4

(a) Extinction spectra of SPN1–4, measured using the PA spectroscope (normalized PA amplitude spectra: hollow markers; PA derived extinction spectra: solid markers) and spectra obtained using a spectrophotometer (lines). (b) Photostability of SPN1–4 at concentrations of ∼40 mg L–1, cresyl violet (700 μM), and IR 820 (230 μM) under continuous irradiation with pulsed laser light with a fluence of ∼2 mJ cm–2. Wavelengths were chosen corresponding to the wavelength of peak absorption of the individual nanoparticles, except for SPN1 where 750 nm was chosen as the excitation wavelength.