Fluorescent Rosamine/TiO2 Composite Films for the Optical Detection of NO2

<div>Photoluminescence spectra of (a) RosCOOH/TiO2 (λex = 530 nm) and (b) RosNH2/TiO2 (λex = 525 nm) composite films before and after their exposure to 20 ppm NO2. Insets: normalized photoluminescence (PL) spectra for each of the rosamines before and after their exposure to NO2.</div>

Journal of Sensors

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Figure 4

Figure 4: Fluorescent Rosamine/TiO2 Composite Films for the Optical Detection of NO2