Fig. 4
Plots of integrated fluorescence intensity of GFP-doped particles and pure GFP versus absorbance at 488 nm. Rhodamine 6G was used as a reference. The linear correlation was fitted by the straight lines. The corresponding linear equations are as follows: y pureGFP = 1.00554 × 1010 × x, R 2 = 0.97712; y\( _{C_F{S}_{1F}} \) = 6.12332 × 109 × x, R 2 = 0.99331; y rhodamin6G = 4.1772 × 109 × x, R 2 = 0.99678