Sulfur-containing, triphenylamine-based red-emitting conjugated polymer/I− assembly as turn-on optical probe for mercury(II) ion
| Autor: | Fudong Ma, Zhengfeng Xie, Wei Shi |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Detection limit
chemistry.chemical_classification Chemistry Metals and Alloys Cationic polymerization chemistry.chemical_element Polymer Conjugated system Condensed Matter Physics Photochemistry Triphenylamine Fluorescence Surfaces Coatings and Films Electronic Optical and Magnetic Materials Mercury (element) Ion chemistry.chemical_compound Materials Chemistry Electrical and Electronic Engineering Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 220:600-606 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2015.06.008 |
| Popis: | A type of sulfur-containing, triphenylamine-based red-emitting conjugated polymer, PFTD, was selected as optical probing platform for I− and Hg2+. Fluorescence of PFTD solution (in THF) was significantly quenched by the addition of I−, and the apparent color of this probing system turned from pale pink to yellow accordingly. Specificity for the detection of I− of PFTD was verified by competing experiments toward other common anionic ions, and the detection limit reaches ∼2.3 × 10−7 M (3σ). Owing to the high affinity between I− and Hg2+, absorption and fluorescence characteristics of PFTD/I− assembly recovered quickly with the presence of Hg2+. Common background cationic ions brought slight interference to the detection of Hg2+. Detection limit of ∼1.1 × 10−7 M (3σ) for Hg2+ can be obtained by PFTD/I−, suggests that PFTD can act as dual-channel, high selective, immediacy and sensitive optical probe for I− and Hg2+. |
| Databáze: | OpenAIRE |
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