An alkynylruthenium dendrimer exhibits two-photon absorption behavior below 1000 nm, and a nonlinear increase in nonlinearity upon dendrimer growth. Beyond 1000 nm, it undergoes 3PA-induced photochemistry. Its nonlinear optical performance is an order of magnitude greater than that of similar organic dendrimers, demonstrating the performance enhancement possible upon incorporation of metal centers into a molecular architecture.
Roberts, R. L., Schwich, T., Corkery, T. C., Cifuentes, M. P., Green, K. A., Farmer, J. D., ... Humphrey, M. G. (2009). Organometallic Complexes for Nonlinear Optics. 45. Dispersion of the Third-Order Nonlinear Optical Properties of Triphenylamine-Cored Alkynylruthenium Dendrimers. Advanced Materials, 21, 2318-2322. https://doi.org/10.1002/adma.200803669