Fig. 3

Characterization images. a Schematic illustration of the synthesis of Apt-Au@MSL. b Ultraviolet absorption spectra of Morin, Au NPs, Au-Apt, Morin–liposome, and Apt-Au@MSL. c FT-IR spectrometers of Morin, Morin–liposome, and Apt-Au@MSL. d The release behavior of Morin from Apt-Au@MSL at different pH conditions. e SEM image of the Morin–liposome. f SEM image of the Apt-Au@MSL. g TEM image of the Au NPs. h TEM image of the Apt-Au@MSL. i Diameters of Morin–liposome and Apt-Au@MSL determined at least thrice via DLS. j ζ-Potential of Au NPs, Apt-Au, and Apt-Au@MSL. k Entrapment efficiency rate (EE%) of Morin–liposome and Apt-Au@MSL