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Keywords:

  • dimerization;
  • photochemistry;
  • self-assembly;
  • supramolecular chemistry;
  • template synthesis
Thumbnail image of graphical abstract

Higher ground: Stereospecific and quantitative [2+2] photodimerization of trans-1,2-bis(4-pyridyl)ethylene in solid state is effectively catalyzed by 4,6- dichlororesorcinol in a supramolecular fashion. Grinding is the crucial process to drive the catalytic cycles.