Synthesis and spectral investigation of a Turn-On fluorescence sensor with high affinity to Cu2+

Lingyun Yang, Qiao Song, Kevanie Damit-Og, Haishi Cao

Research output: Contribution to journalArticle

41 Scopus citations


Three anthracene derivatives (1a, 1b and 1c) containing a Schiff base moiety were synthesized and investigated as chemosensors for the detection of Cu2+. 1a displayed extremely high selectivity to Cu2+ over other 12 interference ions with 120-fold fluorescence enhancement at 468 nm in the acetonitrile media. The nitrogen atom in Schiff base and sulfur atom of 1a provided a binding scaffold for recognition of Cu2+ with high affinity (Ka = 4.35 × 104M-1). The formation of 1a-Cu2+ complex caused a decrease of electron density on nitrogen atom and sequentially led to fluorescence enhancement based on the photoinduced electron transfer (PET) mechanism. The design used for these three molecules afforded a new model for construction of fluorescence sensors based on PET mechanism.

Original languageEnglish (US)
Pages (from-to)181-185
Number of pages5
JournalSensors and Actuators, B: Chemical
Publication statusPublished - Jan 1 2013



  • Anthracene
  • Fluorescence sensor
  • PET
  • Schiff-base

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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