Surface modified colloidal particles have many applications, such as for coating materials, photonics, and biological/pharmaceutical diagnosis. In this study, a process is developed for covalently bonding the para-ethyl red dye to the carboxyl group on the surface of polystyrene carboxylated microspheres. The surface sensitive nonlinear optical probe – Second Harmonic Generation (SHG)- is applied to identify the binding of the dye molecules to the microparticle surface.
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Back to The 37th Middle Atlantic Regional Meeting (May 22-25, 2005)