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A New Cellulose-Based Fluorescent Probe for Specific and Sensitive Detection of $Cu^{2+}$ and Its Applications in the Analysis of Environmental Water
| Content Provider | MDPI |
|---|---|
| Author | Zhao, Fei Meng, Zhiyuan Wang, Zhonglong Yang, Yiqin |
| Copyright Year | 2022 |
| Description | In this work, a novel fluorescent probe CMC−GE−AQ with an effective sensitive detection ability for $Cu^{2+}$ was synthesized and constructed by using carboxymethyl cellulose (CMC) as the skeleton and 8-aminoquinoline (AQ) as the fluorophore. This probe exhibited a highly specific “turn-off” fluorescence response to $Cu^{2+}$, and the fluorescence color changed from bright orange to colorless after adding $Cu^{2+}$. The probe could selectively detect $Cu^{2+}$ in a complex environment and its detection limit (LOD), the binding constant $(K_{a}$) and the numbers of binding sites (n) were calculated to be 6.4 × $10^{−8}$ mol $L^{−1}$, 1.7 × $10^{6}$ $mol^{−1}$ L and 1.2, respectively. The sensing detection mechanism was confirmed by X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) calculations. In addition, the probe CMC−GE−AQ was successfully applied to detect $Cu^{2+}$ in real water samples, and CMC−GE−AQ-based fluorescent microspheres can serve as a convenient tool for the detection of $Cu^{2+}$. |
| Starting Page | 2146 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym14112146 |
| Journal | Polymers |
| Issue Number | 11 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-25 |
| Access Restriction | Open |
| Subject Keyword | Polymers Analytical Chemistry Carboxymethyl Cellulose Fluorescent Probe Microspheres Cu2+ |
| Content Type | Text |
| Resource Type | Article |
