A highly selective and sensitive fluorescence "turn-on" probe for Ag + in aqueous solution and live cells

  • Lin Xu
  • , Yufang Xu
  • , Weiping Zhu
  • , Chunmei Yang
  • , Le Han
  • , Xuhong Qian*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

A naphthalimide-based fluorescent probe, NPQ, that contains a novel receptor was successfully developed. NPQ exhibited "turn-on" fluorescence and excellent selectivity toward Ag + in the presence of various other metal ions in aqueous solution. A series of control compounds were designed and synthesized in order to explore the photoinduced electron transfer (PET) quenching mechanism of NPQ and binding mode of NPQ with Ag +. Moreover, with the NPQ-Ag + complex, I - was easily selectively recognized by a marked fluorescence quenching. The live cell imaging experiments demonstrate that NPQ can be used as a fluorescent probe for monitoring Ag + in living cells.

Original languageEnglish
Pages (from-to)7212-7217
Number of pages6
JournalDalton Transactions
Volume41
Issue number24
DOIs
StatePublished - 28 Jun 2012
Externally publishedYes

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