Optimising Molecular Two-photon Cross Section the Brightness Trade-off

5 Optimising Molecular Two-photon Cross Section the Brightness Trade-off 

Since the proof of concept for two-photon induced Ln(III) emission, huge efforts have been devoted to develop and optimise an antenna that could be used as an efficient two-photon sensitiser. As explained above, the use of delocalised charge transfer transitions allows an increase of the two-photon cross-section and the demonstration of such excited state 

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