Comparison of Optical Properties of Pyrazoline Derivative Nanoparticles
We prepared various pyrazoline derivatives which possess dimethylamino-, ethoxy-, isopropyl-phenyl ring at the 5-position of pyrazoline. The nanoparticles of pyrazoline derivative ranging from tens to hundreds of nanometers by the reprecipitation method have been successfully prepared and their optical size-dependent properties have been investigated with UV-vis, fluorescence spectroscopy, DLS (Dynamic Light Scattering) and SEM. The size-dependent optical properties of pyrazoline organic nanoparticles have been observed in the order of dimethylamino- > ethoxy- > isopropyl- in electro-donating characters.
Chang Kyu Rhee
H. S. Kang et al., "Comparison of Optical Properties of Pyrazoline Derivative Nanoparticles", Solid State Phenomena, Vol. 119, pp. 39-42, 2007