Research Article
Fluorescent Rosamine/TiO2 Composite Films for the Optical Detection of NO2
Figure 6
Response time (t50) corresponding to the exposure of RosCOOH/TiO2 and RosNH2/TiO2 composite films to NO2. Error bars indicate ±σ (standard deviation). The response time of RosCOOH anchored to microcolumnar (μc-) SiO2 once exposed to 50 ppm NO2 is included for comparison.