Figure 5 | Scientific Reports

Figure 5

From: Anomalous Fluorescence Enhancement from Double Heterostructure 3D Colloidal Photonic Crystals–A Multifunctional Fluorescence-Based Sensor Platform

Figure 5

(a) The fluorescence spectra double heterostructure E-(CDs@F)-E, heterostructure of E-CDs@F and single monolithic (CDs@F), control is CDs infiltrated into the amorphous PS structure. (b) FL enhancement factor for all samples, measured as the fluorescence intensity ratio between the sample and the control. (c) concentration-dependent FL linear response of E-(CDs@F)-E film sensor by of Hg(II) compared to concentration-dependent FL linear response of CDs. (d) Reversible changes of the FL intensities of the film sensor when immersed in the solution of 1.0 nM Hg2+ and 2 mM EDTA alternately.

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