Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination
Ag<sup>+</sup> pollution is of great harm to the human body and environmental biology. Therefore, there is an urgent need to develop inexpensive and accurate detection methods. Herein, lignin-derived structural memory carbon nanodots (C<sub>SM</sub>-dots) with outstanding flu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2687 |
| _version_ | 1827678914099544064 |
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| author | Xi Zhou Yufeng Cao Xinji Zhou Lina Xu Daihui Zhang Chunpeng Wang Fuxiang Chu Tao Qian |
| author_facet | Xi Zhou Yufeng Cao Xinji Zhou Lina Xu Daihui Zhang Chunpeng Wang Fuxiang Chu Tao Qian |
| author_sort | Xi Zhou |
| collection | DOAJ |
| description | Ag<sup>+</sup> pollution is of great harm to the human body and environmental biology. Therefore, there is an urgent need to develop inexpensive and accurate detection methods. Herein, lignin-derived structural memory carbon nanodots (C<sub>SM</sub>-dots) with outstanding fluorescence properties were fabricated via a green method. The mild preparation process allowed the C<sub>SM</sub>-dots to remain plentiful phenol, hydroxyl, and methoxy groups, which have a specific interaction with Ag<sup>+</sup> through the reduction of silver ions. Further, the sulfur atoms doped on C<sub>SM</sub>-dots provided more active sites on their surface and the strong interaction with Ag nanoparticles. The C<sub>SM</sub>-dots can specifically bind Ag<sup>+</sup>, accompanied by a remarkable fluorescence quenching response. This “turn-off” fluorescence behavior was used for Ag<sup>+</sup> determination in a linear range of 5–290 μM with the detection limit as low as 500 nM. Furthermore, findings showed that this sensing nano-platform was successfully used for Ag<sup>+</sup> determination in real samples and intracellular imaging, showing great potential in biological and environmental monitoring applications. |
| first_indexed | 2024-03-10T06:19:31Z |
| format | Article |
| id | doaj.art-bfae574388a14226bda299d33a744652 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T06:19:31Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-bfae574388a14226bda299d33a7446522023-11-22T19:25:10ZengMDPI AGNanomaterials2079-49912021-10-011110268710.3390/nano11102687Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence DeterminationXi Zhou0Yufeng Cao1Xinji Zhou2Lina Xu3Daihui Zhang4Chunpeng Wang5Fuxiang Chu6Tao Qian7School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaInstitute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Nanjing 210042, ChinaInstitute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Nanjing 210042, ChinaInstitute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Nanjing 210042, ChinaInstitute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Nanjing 210042, ChinaSchool of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, ChinaAg<sup>+</sup> pollution is of great harm to the human body and environmental biology. Therefore, there is an urgent need to develop inexpensive and accurate detection methods. Herein, lignin-derived structural memory carbon nanodots (C<sub>SM</sub>-dots) with outstanding fluorescence properties were fabricated via a green method. The mild preparation process allowed the C<sub>SM</sub>-dots to remain plentiful phenol, hydroxyl, and methoxy groups, which have a specific interaction with Ag<sup>+</sup> through the reduction of silver ions. Further, the sulfur atoms doped on C<sub>SM</sub>-dots provided more active sites on their surface and the strong interaction with Ag nanoparticles. The C<sub>SM</sub>-dots can specifically bind Ag<sup>+</sup>, accompanied by a remarkable fluorescence quenching response. This “turn-off” fluorescence behavior was used for Ag<sup>+</sup> determination in a linear range of 5–290 μM with the detection limit as low as 500 nM. Furthermore, findings showed that this sensing nano-platform was successfully used for Ag<sup>+</sup> determination in real samples and intracellular imaging, showing great potential in biological and environmental monitoring applications.https://www.mdpi.com/2079-4991/11/10/2687carbon nanodotssilver ionfluorescent sensorstructural memoryintracellular imaging |
| spellingShingle | Xi Zhou Yufeng Cao Xinji Zhou Lina Xu Daihui Zhang Chunpeng Wang Fuxiang Chu Tao Qian Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination Nanomaterials carbon nanodots silver ion fluorescent sensor structural memory intracellular imaging |
| title | Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination |
| title_full | Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination |
| title_fullStr | Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination |
| title_full_unstemmed | Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination |
| title_short | Nanosensors Based on Structural Memory Carbon Nanodots for Ag<sup>+</sup> Fluorescence Determination |
| title_sort | nanosensors based on structural memory carbon nanodots for ag sup sup fluorescence determination |
| topic | carbon nanodots silver ion fluorescent sensor structural memory intracellular imaging |
| url | https://www.mdpi.com/2079-4991/11/10/2687 |
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