Synthesis of porphyrin cyclic oligomer based on quadruple hydrogen-bonding

Akihiro Takayama*, Haruki Ohkawa, Hiroyuki Nishide

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Synthesis of a porphyrin cyclic oligomer based on ureidpyrimidinone, which forms a stable dimer via self-complementary quadruple hydrogen bonding, will be discussed. In our synthetic strategy, excess hydrogen-bonding unit namely, isocytosine was activated by carbonyldiimidazole to react with two amino groups of a porphyrin. This methodology is quite advantageous in terms of its efficiency and accessibility towards a supramolecular porphyrin cyclic oligomer. The concentration dependence of the ring-chain equilibrium in the supramolecular porphyrin oligomer was also investigated by diffusion ordered spectroscopy. Furthermore, results of the metathesis reaction to isolate the cyclic oligomer, will be also mentioned.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Number of pages1
Publication statusPublished - 2005
Event54th SPSJ Symposium on Macromolecules - Yamagata
Duration: 2005 Sept 202005 Sept 22


Other54th SPSJ Symposium on Macromolecules


  • Cyclic oligomer
  • Porphrin
  • Quadruple hydrogen bonding
  • Ureidopyrimidinone

ASJC Scopus subject areas

  • General Engineering


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