Exploring Step-by-Step Assembly of Nanoparticle:Cytochrome Biohybrid Photoanodes.

ABSTRACT: Coupling light-harvesting semiconducting nanoparticles (NPs) with redox enzymes has been shown to create artificial photosynthetic systems that hold promise for the synthesis of solar fuels. High quantum yields require efficient electron transfer from the nanoparticle to the redox protein, a property that can be difficult to control. Here, we have compared binding and electron transfer between dye-sensitized TiO₂ nanocrystals or CdS quantum dots and two decaheme cytochromes on photoanodes. The effect of NP surface chemistry was assessed by preparing NPs capped with amine or carboxylic acid functionalities. For the TiO₂ nanocrystals, binding to the cytochromes was optimal when capped with a carboxylic acid ligand, whereas for the CdS QDs, better adhesion was observed f

SUBMITTER: Hwang ET 

PROVIDER: S-EPMC5573906 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature