Abstract
By applying a seed-mediated growth method, which was developed for chemical synthesis of gold nanorods in aqueous solution, we observed the changes in the crystal growth of gold nanoparticles on the surfaces of indium tin oxides (ITO) in the presence and absence of 3-mercaptopropyl-trimethoxysilane (MPTMS). While flat and amorphous-like growth of gold nanoparticles were observed on the MPTMS layer-modified ITO due to the interaction with the thiol group, in the absence of the MPTMS layer, gold nanoparticles were found to grow relatively freely to form the crystal-like structures in the solution phase at the ITO surface. The gold nanoparticle-modified ITO surfaces prepared under the latter conditions are promising as new functional interfaces, because gold nanoparticles could be attached on the surfaces without using binder molecules, such as MPTMS.
Published Version
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