Electrochemically Switchable Molecular-Tweezers

J Oleo Sci. 2017;66(4):419-423. doi: 10.5650/jos.ess17027.


Synthetic receptors possessing two complexing chromophores connected by a single spacer are referred to as molecular tweezers. We report an electrochemically triggered molecular tweezers, which is a calix[4]arene-bis-porphyrin conjugate, that acts as a proof-of-concept demonstration system showing an electro-statically induced approach to guest release. The electrochemical behavior represents that 1,4-diazabicyclo[2.2.2]octane (DABCO) is released from the complex formed between calix[4]arene-bis-porphyrin conjugate and DABCO, just after cooperative two-oxidation occurs at 0.41 V.

MeSH terms

  • Calixarenes / chemistry*
  • Electrochemical Techniques
  • Macromolecular Substances / chemistry*
  • Molecular Structure
  • Oxidation-Reduction
  • Piperazines / chemistry
  • Porphyrins / chemistry*
  • Receptors, Artificial / chemistry*


  • Macromolecular Substances
  • Piperazines
  • Porphyrins
  • Receptors, Artificial
  • Calixarenes
  • triethylenediamine