Thursday, 2 June 2016: 12:00
Sapphire Ballroom E (Hilton San Diego Bayfront)
A hybrid organic-inorganic membrane for facilitating artificial photosynthesis is made by embedding surface bound molecular wires in an inorganic ~2 nm thick silica layer by low temperature atomic layer deposition. This membrane is meant to facilitate electron and proton transport between water oxidation and carbon dioxide reaction sites while blocking products and intermediate reactions by compartmentalizing the reaction microenvironments. Here the membrane is studied in a flat form as an intermediate step towards a working artificial photosynthesis system. The membrane is characterized using FT-IR, XPS and EDS-STEM, confirming the wires are intact and embedded in silica. Charge transport through the wires is confirmed by directly measuring the short circuit photocurrent generated by hole injection from a Ru based dye solution while at the same time blocking charge transport from Sn based dye solution which does not have the proper energy level alignment to inject charges to the wires. The incorporation of a molecular wire in an inorganic matrix may facilitate the incorporation of other molecular electronic building block and enable their use in other applications and fields of study.