Crown ether functionalization of a porphyrin-based `molecular square': Induction of fluorescence sensitivity to alkali metal cations

Seung Hyun Chang, Kwang Bo Chung, Rovert V. Slone, Joseph T. Hupp

Research output: Contribution to journalArticle

21 Citations (Scopus)


A porphyrin-based `molecular square' (1), prepared by reaction of a dipyridylporphyrin species with Re(CO)5Cl and subsequently with ZnII acetate, was functionalized with 2-(methylene-15-crown-5-ether)-nicotinoyl ester (2). Functionalization was achieved by axially ligating each of the four available ZnII sites within the porphyrins. (2) was synthesized by reaction of 2-(hydroxymethyl)-15-crown-5-ether and nicotinoyl chloride in CH2Cl2. Functionalization renders the square's fluorescence emission intensity responsive to added Na+ and, to a lesser extent, K+.

Original languageEnglish
Pages (from-to)215-217
Number of pages3
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - Feb 15 2001


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this