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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: A Group of Complexes Based on PAMAM and Quantum Dots Used in Clinical Immunoassays

Fig. 3

a Distribution of hydrodynamic diameter of the QDs and QDs-conjugated IgG (goat anti-mouse). (a) QDs’ diameters and (b) QDs-conjugated IgG (goat anti-mouse). The average diameter of the QDs is 64.87 nm, and that of QDs-IgG is 211.4 nm, detected by DLS. b Fluorescence spectra of QDs-IgG (goat anti-mouse), QDs and preserving buffer (2.5 mM BS, pH 8.0, 0.1% BSA). The QDs-IgG fluorescence emission peak was the same as that of the QDs, indicating that the coupling of IgG to QDs did not alter the QDs’ optical characteristics. c ELISA method to detect the antibody resistance of QDs-IgG (goat anti-mouse), the PVDF membrane was assessed with UV

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