A new phosphorescent chemosensor bearing Zn-DPA sites for H 2PO4-

Hye Bin Kim, Yifan Liu, Dayoung Nam, Yinan Li, Sungnam Park, Juyoung Yoon, Myung Ho Hyun

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    A phosphorescence chemosensor bearing an iridium (III) complex as a communicating source and two Zn-DPA units acting as a preorganized binding site for H2PO4- is presented. The phosphorescent chemosensor displayed a selective phosphorescence enhancement with H 2PO4- in aqueous solution and at neutral pH. On the other hand, F-, Cl-, Br-, I-, NO3-, CH3COO-, and ClO 4- did not induce significant changes in phosphorescence. Furthermore, the phosphorescent chemosensor shows selectivity for H 2PO4- over the related phosphate species, such as ATP and pyrophosphate. In addition, there was a distinct lifetime change only for H2PO4-. The association constant was calculated to be 9.68 × 104 M-1 for H 2PO4-.

    Original languageEnglish
    Pages (from-to)20-24
    Number of pages5
    JournalDyes and Pigments
    Volume106
    DOIs
    Publication statusPublished - 2014 Jul

    Bibliographical note

    Funding Information:
    This research was supported by a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MSIP) (No. 2012-0002571 for M.H.H., No. 2010-0020209 for S.P. and National Creative Research Initiative : No. 2012R1A3A2048814 for J.Y.)

    Keywords

    • Anion recognition
    • Dihydrogen phosphate sensing
    • Iridium complex
    • Phosphate sensor
    • Phosphorescence chemosensor
    • Zinc complex

    ASJC Scopus subject areas

    • General Chemical Engineering
    • Process Chemistry and Technology

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