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. Author manuscript; available in PMC: 2021 May 11.
Published in final edited form as: Nanoscale. 2019 Jan 17;11(3):799–819. doi: 10.1039/c8nr07769j

Fig. 3.

Fig. 3

Different structure and composition of nanoparticles in fluorescence biomedical imaging. A: vector type; B: core-shell structure of NP; C: NP as a quencher; D: NP connected with fluorophore and quencher, E: Forster resonance energy transferred imaging NP (yellow arrow: nanoparticle; red arrow: fluorescent dye; blue arrow: ligand; grey arrow: quencher; yellow curve arrow: energy transfer; green curve arrow: excitation light; red curve arrow: emission light; MMP: matrix metalloproteinase).