Fluorescent ratiometry of tetrahomodioxacalix[4]arene pyrenylamides upon cation complexation

Jung Kyu Choi, Areum Lee, Seyoung Kim, Sihyun Ham, Kwanghyun No, Jong Seung Kim

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


C-1,2-alternate tetrahomodioxacalix[4]arene pyreneamides were synthesized. Pb2+ coordination gave a quenched monomer and excimer fluorescence emission, while upon Ca2+ ion binding, the receptor provides an enhanced excimer and declined monomer emission with ratiometric response. The excimer emission spectra changes are rationalized by frontier molecular orbitals that the effective Py-Py* interaction induces emission intensity increases upon Ca2+ ion complexation, whereas there is no such interaction observed upon Pb2+ binding.

Original languageEnglish
Pages (from-to)1601-1604
Number of pages4
JournalOrganic Letters
Issue number8
Publication statusPublished - 2006 Apr 13
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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