Figure 5 | Scientific Reports

Figure 5

From: Hierarchical self-assembly of squaraine and silica nanoparticle functionalized with cationic coordination sites for near infrared detection of ATP

Figure 5

(A) The relative fluorescence intensity change of SQ (5.0 μM) at 648 nm in the presence of SiNPs-DPA@Zn2+ (220 mg/L) in PBS (10 mM, pH 7.2) upon addition 333 μM of various ions or other nucleoside polyphosphates (black bars). Red bars represent the relative intensity change with subsequent addition of ATP (333 μM). (B) Photographs of color change of SQ (5 mM) in PBS in the presence of SiNPs-DPA@Zn2+ (220 mg/L) upon addition of different ions (333 μM).

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