Figure 4 | Scientific Reports

Figure 4

From: Stable ICG-loaded upconversion nanoparticles: silica core/shell theranostic nanoplatform for dual-modal upconversion and photoacoustic imaging together with photothermal therapy

Figure 4

The UV-vis spectra and corresponding linear relation versus concentration of pure ICG dissolved into deionized water solution detected (A,B) immediately and (C,D) after being kept for days. UV-vis-NIR absorbance spectra of (E) pure ICG and (F) UCNP@mSiO2-ICG with sealed structure at different store time points. All the samples are dissolved into deionized water solution.

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