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 language | English |
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Pages (from-to) | 128-132 |
Number of pages | 5 |
Journal | Nanjing Youdian Daxue Xuebao (Ziran Kexue Ban)/Journal of Nanjing University of Posts and Telecommunications (Natural Science) |
Volume | 34 |
Issue number | 1 |
State | Published - Feb 2014 |
Externally published | Yes |
Keywords
- Conjugated polymers
- Mercury
- Multi-modal
- Sensors