We present a novel technique for immobilizing nanoparticles on a substrate. This method contains two techniques,
which are a preparing technique of self-assembled monomolecular layers (SAMs) terminated in an epoxy group or an
amino group on surface of nanoparticles or a substrate and a reaction technique between the epoxy and amino groups.
The epoxy terminated SAMs or the amino terminated SAMs were prepared on nanoparticle surfaces or a substrate
surface by a chemical adsorption technique using 3-glycidoxypropyltrimethoxysilane or (3-aminopropyl)
trimethoxysilane. The particles dispersed in an organic solvent were coated on the substrate, and then the epoxy and
amino groups were reacted each other. Unreacted nanoparticles were removed by washing. As a result, the nanoparticles
were immobilized to the substrate surface through covalent bonds of the epoxy-amine cross-linking. By using this
method, a mono nanoparticle layer could be formed on the substrate.
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