Selective metal detection in an unsymmetrical 1,3-alternate calix[4]biscrown chemosensor

Ju Han Bok, Hyun Jung Kim, Jeong Won Lee, Sung Kuk Kim, Jung Kyu Choi, Jacques Vicens, Jong Seung Kim

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Calix[4]crown-based chemosensors 1, 2, and reference 3 have been synthesized. The weak fluorescence intensity of 1,5-naphthalene of 1 suggests that the benzene rings of the calix[4]arene as well as the oxygen atoms of the crown-5 ring take part in PET. The complexation of two K+ ions by both crown-5 and 1,5-naphthalene-crown-6 loops of 1 caused fluorescence enhancement of the naphthalene unit by CHEF. Pb2+ acted as a quenching metal ion.

Original languageEnglish
Pages (from-to)1237-1240
Number of pages4
JournalTetrahedron Letters
Issue number8
Publication statusPublished - 2006 Feb 20
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by a BrainPool Grant from the KOFST (Grant No. 051S-1-6).

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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