Quartz Crystal Piezo Electrode Surface Modification for Gold Nano-particles Immobilization

Authors : Fatma Ayhan, Aydan Gülsu, Hakan Ayhan

Pages : 203-208

View : 15 | Download : 8

Publication Date : 2007-08-01

Article Type : Other

Abstract :In this study silver electrode quartz crystal surfaces were cleaned and modified to immobilize gold nanoparticles.First, the crystal surfaces were cleaned and activated with sodium hydroxide, acetone and methanol. After the cleaningand the activation process, first cysteamine immobilization stage was performed in phosphate buffer pH=7.0 .Glutaraldehyde was used as a spacer arm and immobilized on the electrode surfaces in tetraborate buffer pH 8.2 .After then, second cysteamine immobilization step was achieved. Frequency shift were measured in all of themodification steps. Gold nanoparticles were immobilized on the modified surfaces by self-assembled monolayer SAM formation, for expanded crystal surface
Keywords : Surface modification, self-assembled monolayer, gold nanoparticles Immobilization