Volume 89 Issue 19 | p. 39 | Concentrates
Issue Date: May 9, 2011

Inorganic Caps Give Nanocrystals A Boost

Replacing organic ligands with inorganic ones selectively boosts electron transport
Department: Science & Technology
News Channels: Nano SCENE
Keywords: nanoparticles, inorganic ligands, CdSe, CdS

Capping semiconductor nanocrystals with inorganic complexes instead of the usual organic ones can improve the particles’ electron-transport abilities without adversely affecting their optical and other properties, according to researchers at the University of Chicago (Nat. Nanotechnol., DOI: 10.1038/nnano.2011.46). Organic molecules with long hydrocarbon chains often play a subtle but critical role in controlling nanoparticle size, morphology, and stability. Yet these ligands, which cap the particle surfaces, act as insulating layers that limit electron . . .

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