A self-assembled, metallo-organic supramolecular frequency doubler.

@article{Burke2012ASM,
  title={A self-assembled, metallo-organic supramolecular frequency doubler.},
  author={Luke A. Burke and Grazia Gonella and Fenton R. Heirtzler and Hai‐Lung Dai and Stephanie Jones and Jon Zubieta and Alex J. Roche},
  journal={Chemical communications},
  year={2012},
  volume={48 7},
  pages={
          1000-2
        }
}
The dimeric self-assembly program of a new, multidentate ligand with cuprous ions overcomes crystal packing forces, which leads to C(i) symmetry in the solid state, to form a no less than partially C(2)-symmetric structure in solution. The resulting tetranitro-substituted dicopper(i) metallocyclophane displays an exceptionally strong second harmonic frequency response (β = (3000 ± 600) × 10(-30) esu for a fundamental at 800 nm). 
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