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. 2021 May 17;19:142. doi: 10.1186/s12951-021-00880-x

Fig. 3.

Fig. 3

The loading and release profiles of DOX. a UV–Vis-NIR spectra of HA-PDA@IQ/DOX NPs with different feeding ratios of DOX to HA-PDA@IQ. b Quantification of DOX loading from HA-PDA@IQ/DOX NPs at different ratios of DOX: HA-PDA@IQ. c DOX release from HA-PDA@IQ/DOX NPs at the different pH values. d NIR-triggered release of DOX from HA-PDA@IQ/DOX NPs