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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Autores principales:	Aihui Liang, Shengfu Zhi, Qiwen Liu, Chongning Li, Zhiliang Jiang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	COF catalysis nanogold indicator reaction aptamer oxytetracycline RRS SERS Biotechnology TP248.13-248.65
Acceso en línea:	https://doaj.org/article/7b49da2689c04a69b9a16e8201543325
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spelling	oai:doaj.org-article:7b49da2689c04a69b9a16e82015433252021-11-25T16:55:39ZA New Covalent Organic Framework of Dicyandiamide-Benzaldehyde Nanocatalytic Amplification SERS/RRS Aptamer Assay for Ultratrace Oxytetracycline with the Nanogold Indicator Reaction of Polyethylene Glycol 60010.3390/bios111104582079-6374https://doaj.org/article/7b49da2689c04a69b9a16e82015433252021-11-01T00:00:00Zhttps://www.mdpi.com/2079-6374/11/11/458https://doaj.org/toc/2079-6374In 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%.Aihui LiangShengfu ZhiQiwen LiuChongning LiZhiliang JiangMDPI AGarticleCOF catalysisnanogold indicator reactionaptameroxytetracyclineRRSSERSBiotechnologyTP248.13-248.65ENBiosensors, Vol 11, Iss 458, p 458 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	COF catalysis nanogold indicator reaction aptamer oxytetracycline RRS SERS Biotechnology TP248.13-248.65
spellingShingle	COF catalysis nanogold indicator reaction aptamer oxytetracycline RRS SERS Biotechnology TP248.13-248.65 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
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%.
format	article
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
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_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_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_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
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7b49da2689c04a69b9a16e8201543325
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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

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