Use of coordinating solvents in gold cluster synthesis, The
Monolayer-protected clusters (MPCs) are nanoparticles ca. 1-3 nm in diameter composed of a metal core and an organic monolayer shell. In this size range MPCs are larger than metal-ligand complexes but too small to exhibit a surface plasmon resonance. The electronic structures of particles in this size regime resemble discrete molecular orbital energy levels as opposed to the band-like behavior observed in larger, plasmonic nanoparticles. MPCs are composed of ten to a few hundred atoms and can be characterized as simple chemical compounds with discrete molecular formulae as opposed to average ...
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