Stilbazolium salts as fluorescence probes for monitoring local viscosity and pH of solutions
Agnieszka BAJOREK, Ilona WRZEŚNIEWSKA, Marek PIETRZAK – Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz

Please cited as: CHEMIK 2011, 65, 4, 255-260

A series of p-substituted 2- or 4-styrylquinolinium iodides and 2- or 4- styrylpyridinium iodides were prepared by the condensation of 4-(N,N-dimethylamino)benzaldehyde and 4-(N,N-dimethylamino)- 1-naphthaldehyde with N-substituted picolines and methylquinolinium iodides. Spectroscopic properties of the dyes are characterized in organic solvents. These dyes were then tested as fluorescence probes to study the local viscosity and pH of the solutions.

Keywords: fluorescence probes, styrylpyridinium iodides, styrylquinolinium iodides