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. 2020 Mar 3;5(12):6763–6772. doi: 10.1021/acsomega.0c00098

Table 1. Fluorescence Decay Time and Pre-Exponential Factor of GQDs and PEG-GQDs.

parameter τ1 (ns) τ2 (ns) A1 A2 τave (ns)
GQDs 1.10 3.67 18 671.88 3499.49 2.09
PEG-GQDs 1.80 10.30 11 928.71 268.85 2.77
PEG-GQDs-Fe3+ 1.36 4.17 36 188.45 2212.06 1.80