A multisignaling chemosensor for Hg2+ based on poly (p-phenyleneethynylene) containing benzo [2, 1, 3] thiadiazole

Hui Bin Sun, Shu Juan Liu, Qiang Zhao, Wei Huang

Research output: Contribution to journalArticlepeer-review

Abstract

A novel colorimetric and fluorometric chemosensor for Hg2+ detection is designed and synthesized based on poly (p-phenyleneethynylene) containing benzo [2, 1, 3] thiadiazole (PPE-BDT). A highly Hg2+-selective fluorescence quenching property in combination with a visible colorimetric change of solution from yellow to violet can be observed, and it shows that PPE-BDT can serve as a sensitive "naked-eye" indicator for Hg2+. The coordination of Hg2+ to the sulfur atom of benzo [2, 1, 3] thiadiazole leads to inter-chain π-π interactions, thus it is responsible for the significant variations on the photophysical properties of the polymer.

Original languageEnglish
Pages (from-to)128-132
Number of pages5
JournalNanjing Youdian Daxue Xuebao (Ziran Kexue Ban)/Journal of Nanjing University of Posts and Telecommunications (Natural Science)
Volume34
Issue number1
StatePublished - Feb 2014
Externally publishedYes

Keywords

  • Conjugated polymers
  • Mercury
  • Multi-modal
  • Sensors

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