Newly formed metal surface is often unstable and becomes stable when it is terminated with another molecule, but the original color and properties may be diminished when it is covered with oxygen or gasses in atmosphere. Anti-copper-corrosion additives adsorb onto the surface of copper and it is used in order to prevent this phenomena and save copper’s color and properties [1]. There are few molecule findings about anti-copper-corrosion additive, however, and the mechanism of adsorbtion onto the surface of cupper and prevent corrosion. Recently, real-time instrumentation technique using Otto-SPR was proposed, and it is becoming possible to observe how additives adsorb onto the surface in molecular level [2].

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