Diagnostics of Plasmon Resonance in Optical Absorption Spectra of Nanographite Aqueous Suspensions

摘要

A characteristic feature near approx255 nm has been revealed in the optical absorption spectra of nanographite aqueous suspensions. This is a broad absorption peak, which is due to the surface plasmon resonance in nanographite particles. The peak shape and intensity depend on the structural quality and aggregate state of onion-like nanographite particles in suspension.