A near-infrared fluorescent chemodosimeter for silver(I) ion based on an expanded porphyrin

Xunjin ZHU, Shitao Fu, Rick W K WONG*, Wai Yeung WONG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

An expanded porphyrin [26]hexaphyrin(1.1.1.1.1.1) was exploited as a fluorescent chemodosimeter for Ag+ ions with high sensitivity and selectivity via near-infrared luminescence above 900 nm, a region that is free from optical interference in the visible wavelength range induced by the commonly used matrix and other organic compounds. The association constant for the Ag+-porphyrin complexation was evaluated by spectroscopic titration method to be 7.24 × 1010 M-1.

Original languageEnglish
Pages (from-to)1843-1846
Number of pages4
JournalTetrahedron Letters
Volume49
Issue number11
DOIs
Publication statusPublished - 10 Mar 2008

Scopus Subject Areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

User-Defined Keywords

  • Luminescence
  • Porphyrins
  • Sensors
  • Silver
  • Transition metals

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