Optimized Two-Dimensional NLO Chromophores with a Threefold Symmetry Axis
The authors would like to thank the Volkswagenstiftung and the Fonds der Chemischen Industrie for generous financial supports of this work.
Graphical Abstract
A new NLO standard has been set by compound 1 for the substance class of analines: Their second-order polarizability β is two orders of magnitude higher than that of the one-dimensional NLO prototype p-nitroaniline. This is an example of the optimization of nonlinear optical chromophores with a threefold axis of symmetry, a current challenge for synthetic organic chemistry.