A very efficient and successful metal-mediated strategy towards the formation of a non-symmetric triad is described: appropriate Lewis acid and/or base functions on the molecular components (a naphthalenediimide, an aluminium(III) porphyrin, and a ruthenium(II) porphyrin) lead to the desired product uniquely. The photophysics of the triad was investigated in detail using time-resolved spectroscopy in the pico- and nanosecond time domains. The strategy is of great potential interest as, while confining the synthetic effort to the single components, it can give access to a wide range of photoactive systems.
Iengo, E., Pantos, G. D., Sanders, J. K. M., Orlandi, M., Chiorboli, C., Fracasso, S., & Scandola, F. (2011). A fully self-assembled non-symmetric triad for photoinduced charge separation. Chemical Science, 2(4), 676-685. https://doi.org/10.1039/c0sc00520g