| Autor: |
Fei Zhao, Zhiyuan Meng, Zhonglong Wang, Yiqin Yang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Polymers, Vol 14, Iss 11, p 2146 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2073-4360 |
| DOI: |
10.3390/polym14112146 |
| Popis: |
In this work, a novel fluorescent probe CMC−GE−AQ with an effective sensitive detection ability for Cu2+ 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 Cu2+, and the fluorescence color changed from bright orange to colorless after adding Cu2+. The probe could selectively detect Cu2+ in a complex environment and its detection limit (LOD), the binding constant (Ka) and the numbers of binding sites (n) were calculated to be 6.4 × 10−8 mol L−1, 1.7 × 106 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 Cu2+ in real water samples, and CMC−GE−AQ-based fluorescent microspheres can serve as a convenient tool for the detection of Cu2+. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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