Photoinduced electron transfer across an organic molecular wall: octa acid encapsulated ESIPT dyes as electron donors.

Efficient photoinduced electron transfer from proton transfer dyes encapsulated within water soluble supramolecular host octa acid to electron acceptors present outside the capsule was observed in aqueous solution. N-Methylpyridinium iodide was found to be the best acceptor compared to 4,4'-dimethylviologen dichloride, most likely due to its better binding with the exterior of the host octa acid walls.