A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600
In this paper, dicyandiamide (Dd) and p-benzaldehyde (Bd) were heated at 180 °C for 3 h to prepare a new type of stable covalent organic framework (COF) DdBd nanosol with high catalysis. It was characterized by molecular spectroscopy and electron microscopy. The study found that DdBd had a strong ca...
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MDPI AG
2021-11-01
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| Series: | Biosensors |
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| Online Access: | https://www.mdpi.com/2079-6374/11/11/458 |
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| author | Aihui Liang Shengfu Zhi Qiwen Liu Chongning Li Zhiliang Jiang |
| author_facet | Aihui Liang Shengfu Zhi Qiwen Liu Chongning Li Zhiliang Jiang |
| author_sort | Aihui Liang |
| collection | DOAJ |
| description | In this paper, dicyandiamide (Dd) and p-benzaldehyde (Bd) were heated at 180 °C for 3 h to prepare a new type of stable covalent organic framework (COF) DdBd nanosol with high catalysis. It was characterized by molecular spectroscopy and electron microscopy. The study found that DdBd had a strong catalytic effect on the new indicator reaction of polyethylene glycol 600 (PEG600)-chloroauric acid to form gold nanoparticles (AuNPs). AuNPs have strong resonance Rayleigh scattering (RRS) activity, and in the presence of Victoria Blue B (VBB) molecular probes, they also have a strong surface-enhanced Raman scattering (SERS) effect. Combined with a highly selective oxytetracycline (OTC) aptamer (Apt) reaction, new dual-mode scattering SERS/RRS methods were developed to quantitatively analyze ultratrace OTC. The linear range of RRS is 3.00 × 10<sup>−3</sup> –6.00 × 10<sup>−2</sup> nmol/L, the detection limit is 1.1 × 10<sup>−3</sup> nmol/L, the linear range of SERS is 3.00 × 10<sup>−3</sup>–7.00 × 10<sup>−2</sup> nmol/L, and the detection limit is 9.0 × 10<sup>−4</sup> nmol/L. Using the SERS method to analyze OTC in soil samples, the relative standard deviation is 1.35–4.78%, and the recovery rate is 94.3–104.9%. |
| first_indexed | 2024-03-10T05:40:21Z |
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| id | doaj.art-7b49da2689c04a69b9a16e8201543325 |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-10T05:40:21Z |
| publishDate | 2021-11-01 |
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| series | Biosensors |
| spelling | doaj.art-7b49da2689c04a69b9a16e82015433252023-11-22T22:36:28ZengMDPI AGBiosensors2079-63742021-11-01111145810.3390/bios11110458A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600Aihui Liang0Shengfu Zhi1Qiwen Liu2Chongning Li3Zhiliang Jiang4Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaKey Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, ChinaIn this paper, dicyandiamide (Dd) and p-benzaldehyde (Bd) were heated at 180 °C for 3 h to prepare a new type of stable covalent organic framework (COF) DdBd nanosol with high catalysis. It was characterized by molecular spectroscopy and electron microscopy. The study found that DdBd had a strong catalytic effect on the new indicator reaction of polyethylene glycol 600 (PEG600)-chloroauric acid to form gold nanoparticles (AuNPs). AuNPs have strong resonance Rayleigh scattering (RRS) activity, and in the presence of Victoria Blue B (VBB) molecular probes, they also have a strong surface-enhanced Raman scattering (SERS) effect. Combined with a highly selective oxytetracycline (OTC) aptamer (Apt) reaction, new dual-mode scattering SERS/RRS methods were developed to quantitatively analyze ultratrace OTC. The linear range of RRS is 3.00 × 10<sup>−3</sup> –6.00 × 10<sup>−2</sup> nmol/L, the detection limit is 1.1 × 10<sup>−3</sup> nmol/L, the linear range of SERS is 3.00 × 10<sup>−3</sup>–7.00 × 10<sup>−2</sup> nmol/L, and the detection limit is 9.0 × 10<sup>−4</sup> nmol/L. Using the SERS method to analyze OTC in soil samples, the relative standard deviation is 1.35–4.78%, and the recovery rate is 94.3–104.9%.https://www.mdpi.com/2079-6374/11/11/458COF catalysisnanogold indicator reactionaptameroxytetracyclineRRSSERS |
| spellingShingle | Aihui Liang Shengfu Zhi Qiwen Liu Chongning Li Zhiliang Jiang A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600 Biosensors COF catalysis nanogold indicator reaction aptamer oxytetracycline RRS SERS |
| title | A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600 |
| title_full | A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600 |
| title_fullStr | A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600 |
| title_full_unstemmed | A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600 |
| title_short | A New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 600 |
| title_sort | new covalent organic framework of dicyandiamide benzaldehyde nanocatalytic amplification sers rrs aptamer assay for ultratrace oxytetracycline with the nanogold indicator reaction of polyethylene glycol 600 |
| topic | COF catalysis nanogold indicator reaction aptamer oxytetracycline RRS SERS |
| url | https://www.mdpi.com/2079-6374/11/11/458 |
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