Studies on the fluorescence properties of conjugated polymer poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene in presence of nitrogen dioxide gas

The fluorescence properties of conjugated polymer poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene (MDMO-PPV) has been studied in the presence of nitrogen dioxide gas. It was observed that the fluorescence of MDMO-PPV polymer is quenched in the presence of NO2 gas and the bright orange fluorescence of the polymer changes to pale yellow. The quenching of the fluorescence of the detecting film after exposure to NO2 is also studied by absorption and emission spectroscopy. A thin film of MDMO-PPV polymer deposited on glass substrate, flexible PET film or filter paper may be used as disposable film for detection of NO2 gas.

Research highlights▶ The fluorescence of MDMO-PPV polymer is quenched in the presence of NO2 gas. ▶ Orange fluorescence of the polymer changes to pale yellow in presence of NO2. ▶ Fluorescence quenching is studied by absorption and emission spectroscopy. ▶ Thin film of polymer may be used as disposable film for detection of NO2 gas.