We are exploring the tethering of conjugated organic ligands onto the surface of semiconductor nanoparticles for the development of solar heterojunction chromophores. Organic ligand exchange on the outer surface of CdSe semiconductor nanocrystals was evaluated using NMR and fluorescence spectroscopy and properties correlated with ligand identity. NMR data will be presented on the coordination of 4-aminobenzoic acid, aniline, and thiophenol in single and mixed ligand systems. The NMR analyses afford quantitative study of ligand exchange and composition. Nanoparticles tethered with 4-aminobenzoic showed improved water processibility. These tailored mixed ligand systems offer new routes to realize photo-activated nanomaterials with improved water solubility and dispersity for use in thin film active layers.

Tailoring cadmium selenide nanocrystals with mixed ligand systems<br />

249th National Meeting (2015)

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