Studies in interaction between polyvinyl pyrrolidone and stilbene fluorescent compounds II. Interaction with mixture of compounds



Interaction between polyvinyl pyrrolidone (PVP) of different molecular weight and aqueous solutions of mixture of two stilbene type fluorescent compounds, which interact with each other, has been examined from the results of fluoremetric and UV absorbance measurements. Results indicate that combination of these compounds results in formation of a complex with reduced fluorescence characteristics. Addition of PVP to this complex brings about dissociation, followed by interaction of each component with PVP and subsequent formation of a different type of complex.