Bis(Dpa-Zn II ) appended xanthone: Excitation ratiometric chemosensor for phosphate anions

Akio Ojida, Hiroshi Nonaka, Yoshifumi Miyahara, Shun Ichi Tamaru, Kazuki Sada, Itaru Hamachi

Research output: Contribution to journalArticlepeer-review

162 Citations (Scopus)


A xanthone-based chemosensor bears two 2,2′-dipicolylamine-zinc(II) sites and displays changes in the excitation spectrum at three wavelengths upon binding phosphates (see picture). These changes in the signals arise from the coordination rearrangement of the xanthone fluorophore around the zinc centers, which modulates the photophysical property of the chemosensor, thus enabling ratiometric fluorescent analysis. (Graph Presented).

Original languageEnglish
Pages (from-to)5518-5521
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number33
Publication statusPublished - Aug 18 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)


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