More links aren’t necessarily better for hybrid nanomaterials

More links aren’t necessarily better for hybrid nanomaterials

Chemists from Rice University and the University of Texas at Austin discovered more isn’t always better when it comes to packing charge-acceptor molecules on the surface of semiconducting nanocrystals.

Rossky, Roberts and colleagues at CAFF systematically studied hybrid materials containing lead sulfide nanocrystals and varying concentrations of an oft-studied organic dye called perylene diimide (PDI). The experiments showed that continually increasing the concentration of PDI on the surface of nanocrystals eventually produced a precipitous drop in electron transfer rates.

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