Phase separation in films of phospholipids and conjugated polymers results in nanoassemblies because of a difference in the physicochemical properties between the hydrophobic polymers and the polar lipid heads, together with the comparable polymer side-chain lengths to lipid tail lengths, thus producing nanoparticles of conjugated polymers upon disassembly in aqueous media by the penetration of water into polar regions of the lipid heads.
Aqueous-based, environmentally friendly photocurrent generation has been highlighted to produce electricity by mimicking photosynthesis in nature. We fabricated a photocurrent generation system using a conjugated oligoelectrolyte (COE) assembled in lipid vesicles and a fluorescence dye, and investigated the fluorescence resonance energy transfer (FRET) between two species and the influence of FRET on the photocurrent generation. The FRET efficiency from the electron donor, COE, to the electron acceptor, the dye, increased with the dye concentrations, but the photocurrent increased and then decreased with the dye concentrations. We discussed about the role of FRET and electron shuttles over the variation of photocurrent.
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