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林陈晨

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化学学院

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Gold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water SCIE
期刊论文 | 2025 , 286 | TALANTA
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Abstract :

The release of microcystin (MCs) in aquatic ecosystems poses a substantial risk to the safety of irrigation and drinking water. In view of the challenges associated with monitoring MCs in water bodies, given their low concentration levels (mu g/L to ng/L) and the presence of diverse matrix interferences, there is an urgent need to develop an efficient, cost-effective and selective enrichment technique for MCs prior to its quantification. In this work, a gold nanoparticles (AuNPs)-functionalized zwitterionic polymer monolith was described and further applied for the affinity enrichment of MCs. Monoliths modified with zwitterionic amino acid ligands were synthesized within capillary microchannels as highly permeable porous supports for the immobilization of gold nanoparticles via electrostatic interactions. The structure and morphology of AuNPs-hybrid monoliths were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and FT-IR spectroscopy, confirming the uniform loading of AuNPs on the polymer matrix while ensuring porous structural stability. The asprepared hybrid monolith was employed as a sorbent for capillary microextraction (CME) prior to liquid chromatography-mass spectrometry (LC-MS) analysis. The results demonstrated that the functionalization of AuNPs under the protection of zwitterionic polymers markedly enhanced the extraction ability of the monolithic column for MCs. This is attributed to the formation of ligand exchange, hydrophobic interactions, and It-system interactions between MCs and AuNPs, as verified by zeta potential and XPS characterization. The developed CME-LC-MS method exhibited a wide linear range (1-10,000 ng L- 1), a low limit of detection (0.58-1.6 ng L- 1), and satisfactory recoveries (71.0-126.7 %) for three MCs in different ambient water sample matrices. It is evident from these findings that AuNPs-functionalized zwitterionic polymers represent a promising novel material for the efficient adsorption of MCs from aqueous samples.

Keyword :

Affinity adsorbent Affinity adsorbent Capillary microextraction Capillary microextraction Gold nanoparticles Gold nanoparticles Microcystins Microcystins Zwitterionic polymer Zwitterionic polymer

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GB/T 7714 Wang, Shuqiang , Huang, Jiansong , Huang, Ting et al. Gold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water [J]. | TALANTA , 2025 , 286 .
MLA Wang, Shuqiang et al. "Gold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water" . | TALANTA 286 (2025) .
APA Wang, Shuqiang , Huang, Jiansong , Huang, Ting , Huang, Guobin , Lin, Chenchen , Wu, Xiaoping . Gold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water . | TALANTA , 2025 , 286 .
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Gold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water Scopus
期刊论文 | 2025 , 286 | Talanta
Gold nanoparticles supported onto zwitterionic polymer capillary monoliths meant for efficient enrichment of microcystins in water EI
期刊论文 | 2025 , 286 | Talanta
Magneto-fluorescent nanobiosensor with tetrahedral framework nucleic acid-confined aptamer for trace adenosine triphosphate detection SCIE
期刊论文 | 2024 , 417 | SENSORS AND ACTUATORS B-CHEMICAL
WoS CC Cited Count: 2
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Abstract :

Accurate quantitation of trace-level ATP biomarkers often suffers from interference of sample matrix and remains a challenge. Herein, a novel magnetic biological nanosensor (MBNS) integrating tetrahedral framework nucleic acid (tFNA)-confined aptamers and ultrasensitive laser-induced fluorescence (LIF) was tailored and evaluated. The fluorescent aptamer nanoprobe hybridized with FAM-labelled cDNA was particularly incorporated into the inner cavity of tFNA, enabling a dual-mode mechanism that integrates molecular size selection and aptamer affinity recognition. By this strategy, the benefits of tFNA molecular sieve, the super sensitive properties of LIF, and the specific recognition of "aptamer gene codes" were integrated, as triggered the superior response of ATP. The structures, properties and reaction mechanism of tFNA, as well as tFNA modified with aptamer probe at different sites, were characterized in detail. A high level of anti-interference was achieved, shielding against nonspecific adsorption even in matrices with high protein and analogue content, 10(3)similar to 10(5) times higher than ATP. The release of fluorescent beacon from aptamer probe was facilely driven by specific binding of ATP, and an ultra-sensitive detection of 75 pmol/L ATP was obtained without amplification. It was 2-3 orders of magnitude more sensitive than most fluorescent aptasensors. Applied to serum samples, the stability and reproducibility of the resultant aptasensor have been validated with the intra- and inter-assay RSD in 1.6-6.4 % and -1.5-8.4 %, respectively. Acceptable recoveries of 96.5-106.8 % were achieved, consistent with the LC-MS method. It was expected to open a simple and efficient protocol for highly specific and ultrasensitive ATP detection in clinical diagnostics.

Keyword :

Aptamer affinity Aptamer affinity Aptasensor Aptasensor Laser-induced fluorescence Laser-induced fluorescence Size selection Size selection Tetrahedral framework nucleic acid Tetrahedral framework nucleic acid

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GB/T 7714 Huang, Guobin , Xie, Qian , Chi, Jinxin et al. Magneto-fluorescent nanobiosensor with tetrahedral framework nucleic acid-confined aptamer for trace adenosine triphosphate detection [J]. | SENSORS AND ACTUATORS B-CHEMICAL , 2024 , 417 .
MLA Huang, Guobin et al. "Magneto-fluorescent nanobiosensor with tetrahedral framework nucleic acid-confined aptamer for trace adenosine triphosphate detection" . | SENSORS AND ACTUATORS B-CHEMICAL 417 (2024) .
APA Huang, Guobin , Xie, Qian , Chi, Jinxin , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . Magneto-fluorescent nanobiosensor with tetrahedral framework nucleic acid-confined aptamer for trace adenosine triphosphate detection . | SENSORS AND ACTUATORS B-CHEMICAL , 2024 , 417 .
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Magneto-fluorescent nanobiosensor with tetrahedral framework nucleic acid-confined aptamer for trace adenosine triphosphate detection EI
期刊论文 | 2024 , 417 | Sensors and Actuators B: Chemical
Magneto-fluorescent nanobiosensor with tetrahedral framework nucleic acid-confined aptamer for trace adenosine triphosphate detection Scopus
期刊论文 | 2024 , 417 | Sensors and Actuators B: Chemical
Surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes for pipette tip solid-phase extraction of microcystins in water SCIE
期刊论文 | 2024 , 1736 | JOURNAL OF CHROMATOGRAPHY A
WoS CC Cited Count: 1
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Abstract :

The occurrence of microcystins (MCs) during harmful algal blooms (HABs) represents a major threat to freshwater environments. In this work, a novel surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes (PCSs) was prepared for the enrichment of MCs. The copolymerization of bifunctional amphiphilic monomers, 2-methacryloyloxyethyl phosphorylcholine (MPC) and N-benzylquininium chloride (BQN), with the cross-linker methacryl substituted polyhedral oligomeric silsesquioxane (POSS) was achieved in an ionic liquid-based porogenic medium. The hierarchical porous structure, a variety of surface functional groups and weak hydrophilicity were well characterized on the prepared materials using scanning electron microscopy, nitrogen adsorption/desorption analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, zeta potential analysis and water contact angle testing, respectively. The as-prepared surface amphiphilic PCSs was used as an adsorbent for pipette tip solid-phase extraction (PT-SPE) to enrich microcystins (MCs) from surface waters before their analysis by capillary electrochromatography (CEC) and liquid chromatography-mass spectrometry (LC-MS). Under the optimal conditions, the established PT-SPE-LC-MS method exhibited a wide linear range (10-10,000 ng L- 1), low limits of detection (4.0-8.0 ng L- 1) and satisfactory recoveries (89.5-102.8 %) for MCs. An adsorption mechanism involving electrostatic interactions, hydrogen bonding, hydrophilic interactions, and it-it stacking has been proposed. The findings suggest that the use of surface amphiphilic PCSs materials as adsorbents in the PT-SPE platform facilitates efficient enrichment of MCs for subsequent chromatographic analysis. These investigations offer a new perspective on the simple and uncomplicated pretreatment of complex environmental samples.

Keyword :

Hybrid porous polymers based on cage-like Hybrid porous polymers based on cage-like Microcystins Microcystins organosiloxanes (PCSs) organosiloxanes (PCSs) Pipette tip solid phase extraction Pipette tip solid phase extraction Surface amphiphilic Surface amphiphilic

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GB/T 7714 Wang, Shuqiang , Liu, Wenning , Lei, Xiaoyun et al. Surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes for pipette tip solid-phase extraction of microcystins in water [J]. | JOURNAL OF CHROMATOGRAPHY A , 2024 , 1736 .
MLA Wang, Shuqiang et al. "Surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes for pipette tip solid-phase extraction of microcystins in water" . | JOURNAL OF CHROMATOGRAPHY A 1736 (2024) .
APA Wang, Shuqiang , Liu, Wenning , Lei, Xiaoyun , Huang, Ting , Huang, Guobin , Lin, Chenchen et al. Surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes for pipette tip solid-phase extraction of microcystins in water . | JOURNAL OF CHROMATOGRAPHY A , 2024 , 1736 .
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Surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes for pipette tip solid-phase extraction of microcystins in water EI
期刊论文 | 2024 , 1736 | Journal of Chromatography A
Surface amphiphilic hybrid porous polymers based on cage-like organosiloxanes for pipette tip solid-phase extraction of microcystins in water Scopus
期刊论文 | 2024 , 1736 | Journal of Chromatography A
一种用于海水总氮检测的装置 incoPat
专利 | 2023-06-05 00:00:00 | CN202321410118.2
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Abstract :

本实用新型涉及一种用于海水总氮检测的装置,包括试剂供应模块、流动注射控制模块、消解反应模块、还原反应/比色检测模块和废液收集模块,本实用新型基于氧化消解、钒试剂还原和偶氮比色反应,待测海水样品依次在消解反应模块和还原/比色检测模块中连续进行海水含氮物质的紫外光‑热协同催化过硫酸盐氧化消解、硝酸盐还原反应和亚硝酸盐显色反应,实现海水总氮的测定,仪器避免了使用高温高压消解反应装置和镉金属还原柱,实验条件较为温和,反应速度快,可应用于海水中总氮的检测分析。

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GB/T 7714 林旭聪 , 刘影 , 林陈晨 . 一种用于海水总氮检测的装置 : CN202321410118.2[P]. | 2023-06-05 00:00:00 .
MLA 林旭聪 et al. "一种用于海水总氮检测的装置" : CN202321410118.2. | 2023-06-05 00:00:00 .
APA 林旭聪 , 刘影 , 林陈晨 . 一种用于海水总氮检测的装置 : CN202321410118.2. | 2023-06-05 00:00:00 .
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Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR SCIE
期刊论文 | 2022 , 236 | TALANTA
WoS CC Cited Count: 19
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Abstract :

A novel aptamer-functionalized metal-organic framework nanofibrous composite (viz. PAN/UiO@UiO(2)-N-3-aptamer) with a high aptamer coverage density was proposed based on the electrospinning and seeded growth method, and used for specific affinity recognition of trace Microcystin-LR (MC-LR). Heterobifunctional ligand was used to modify the metal-organic framework nanoparticles (MOF NPs) surface, which could passivate the MOF surface with respect to unmodified DNA, followed by coupling massive aptamers on MOF of the solid-phase microextraction (SPME) fiber using click chemistry. Characterizations including morphology, spectra analysis, mechanical stability, binding capacity and specificity were fulfilled. Applied to the analysis of MC-LR, the good selective and sensitive recognition were obtained with the detection limit as low as 0.003 ng/mL, which was better than most non-specific SPME or solid-phase extraction (SPE) protocols. The stability and reproducibility were acceptable, and the intra-day, inter-day and column-to-column relative standard deviations (RSDs) for the recovery of MC-LR were gained in the range from 2.5% to 14.3%, respectively. Satisfactory recoveries of MC-LR in environmental water samples were measured as 96.3 +/- 4.7% - 98.9 +/- 2.7% (n = 3) in tap water, 94.4 +/- 2.5% 96.1 +/- 3.5% (n = 3) in pond water, and 97.0 +/- 2.1% - 97.9 +/- 3.1% (n = 3) in river water, respectively. This work demonstrated that the electrospun nanofibrous composite with massive aptamers would be a better alternative for ultra-trace MC-LR detection with good selectivity, matrix-resistance ability and high resolution.

Keyword :

Aptamer Aptamer Click chemistry Click chemistry Electrospinning Electrospinning Microcystin-LR Microcystin-LR Selective extraction Selective extraction

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GB/T 7714 Xu, Zhiqun , Zhang, Zhexiang , She, Zongkang et al. Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR [J]. | TALANTA , 2022 , 236 .
MLA Xu, Zhiqun et al. "Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR" . | TALANTA 236 (2022) .
APA Xu, Zhiqun , Zhang, Zhexiang , She, Zongkang , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR . | TALANTA , 2022 , 236 .
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Aptamer-functionalized metal-organic framework-coated nanofibers with multi-affinity sites for highly sensitive, selective recognition of ultra-trace microcystin-LR EI
期刊论文 | 2022 , 236 | Talanta
Facile one-step synthesis of graphene oxide/polyhedral oligomeric silsesquioxane composite-coated fiber for high-efficiency solid-phase microextraction of polycyclic musks SCIE
期刊论文 | 2022 , 1234 | ANALYTICA CHIMICA ACTA
WoS CC Cited Count: 7
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Abstract :

Efficient fabrication of excellent fiber coatings for high-performance solid-phase microextraction (SPME) is interesting. Here, a high-efficiency synthesis strategy on graphene oxide/polyhedral oligomeric silsesquioxane (GO/POSS) composite-coated fiber was exploited via an ultra-fast UV polymerization in one step, and applied to excellent SPME of polycyclic musks (PCMs). Using methacryloxy siloxane-grafted GO and POSS-methacryl substituted (POSS-MA) as functional monomers, a facile and direct UV polymerization of multiple reactions including alkenyl radical reaction and thiol-ene click chemistry was fulfilled on thiol-pretreated fiber in only 5 min without tedious process. Characteristics such as morphology, FT-IR, XPS, BET and TG of fiber coating were studied in detail, as well as the SPME performance. Attributing to the rigid stereo conformation of POSS and large conjugate plane of GO-based nanosheet, the significant surface area, high hydrophobicity and intrinsic 7C-7C in-teractions were adopted in fiber coating. In comparison of commercial SPME fibers, POSS-based or GO-based SPME fibers, a superior extraction performance towards PCMs was achieved with GO/POSS-coated fiber. High-efficiency extraction of PCMs was gained with prominent enrichment factors and the sensitive detection limits of PCMs were of 0.04-0.12 ng/L. In particular, the extraction efficiency was robust and still maintained a high level above 93% for PCMs even after 150 cycle's applications. Good recoveries of PCMs reached 86.6%- 102.1% and 86.7%-101.3% in river water and cosmetic samples, respectively. It lights an attractive approach to efficiently fabricating robust GO/POSS-coated fiber for high-performance SPME of PCMs.

Keyword :

Graphene oxide Graphene oxide One-step polymerization One-step polymerization Polycyclic musks Polycyclic musks Polyhedral oligomeric silsesquioxane Polyhedral oligomeric silsesquioxane Solid-phase microextraction Solid-phase microextraction

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GB/T 7714 Jiang, Shuangchen , Wan, Shuangfeng , Du, Hong et al. Facile one-step synthesis of graphene oxide/polyhedral oligomeric silsesquioxane composite-coated fiber for high-efficiency solid-phase microextraction of polycyclic musks [J]. | ANALYTICA CHIMICA ACTA , 2022 , 1234 .
MLA Jiang, Shuangchen et al. "Facile one-step synthesis of graphene oxide/polyhedral oligomeric silsesquioxane composite-coated fiber for high-efficiency solid-phase microextraction of polycyclic musks" . | ANALYTICA CHIMICA ACTA 1234 (2022) .
APA Jiang, Shuangchen , Wan, Shuangfeng , Du, Hong , Lin, Chenchen , Lin, Xucong . Facile one-step synthesis of graphene oxide/polyhedral oligomeric silsesquioxane composite-coated fiber for high-efficiency solid-phase microextraction of polycyclic musks . | ANALYTICA CHIMICA ACTA , 2022 , 1234 .
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Facile one-step synthesis of graphene oxide/polyhedral oligomeric silsesquioxane composite-coated fiber for high-efficiency solid-phase microextraction of polycyclic musks Scopus
期刊论文 | 2022 , 1234 | Analytica Chimica Acta
Facile one-step synthesis of graphene oxide/polyhedral oligomeric silsesquioxane composite-coated fiber for high-efficiency solid-phase microextraction of polycyclic musks EI
期刊论文 | 2022 , 1234 | Analytica Chimica Acta
Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating SCIE
期刊论文 | 2022 , 1681 | JOURNAL OF CHROMATOGRAPHY A
WoS CC Cited Count: 9
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Abstract :

Developing functional fiber coating for selective solid phase microextraction (SPME) of trace pollutants is critical in environmental analysis. Herein, the novel covalent organic frameworks (COFs) with three-dimensional (3D) frameworks and multiple interactions were designed and presented for the selec-tive SPME of polychlorinated biphenyls (PCBs). Using tetra (p-aminophenyl) methane (TAM) and 1,3,5-triformylphloroglucinol (Tp) as the monomers, the 3D TpTAM-COF was synthesized and possessed a large specific surface area, high thermal stability, and spatial selectivity toward PCBs. Characterizations such as morphology, XPS, XRD, thermal stability, and enhancement factors (EFs) were studied. Multiple in-teractions including pi-pi conjugation, hydrophobic interaction, and selectivity toward non-planar struc-ture were adopted, which resulted in a superior adsorption affinity toward PCBs on TpTAM-COF. Under the optimal conditions, the spatial selectivity toward PCBs, organic analogs (o-dichlorobenzene, biphenyl) and polycyclic aromatic hydrocarbons (naphthalene, pyrene, and anthracene)) was achieved. Efficient and selective adsorption of fifteen PCBs was fulfilled with the highest EF up to 10305. Using the HS-SPME-GC-MS method, the recoveries of PCBs in the river water and soil samples were determined to be 84.8 +/- 7.8% -117.2 +/- 8.5% (n = 3) and 84.4 +/- 8.6% -114.7 +/- 7.6% (n = 3), respectively. Compared with most commercial SPME fibers and other COFs-based fibers, the resultant TpTAM-COF-coated fibers possessed higher selectivity and EFs of PCBs. It proposed a promising approach for selective SPME of trace PCBs by multiple interactions in the steric structure of 3D COFs.(c) 2022 Elsevier B.V. All rights reserved.

Keyword :

3D covalent organic framework 3D covalent organic framework Fiber coating Fiber coating Polychlorinated biphenyls Polychlorinated biphenyls Selective solid phase microextraction Selective solid phase microextraction

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GB/T 7714 Lu, Feifei , Wu, Mengqin , Lin, Chenchen et al. Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating [J]. | JOURNAL OF CHROMATOGRAPHY A , 2022 , 1681 .
MLA Lu, Feifei et al. "Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating" . | JOURNAL OF CHROMATOGRAPHY A 1681 (2022) .
APA Lu, Feifei , Wu, Mengqin , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating . | JOURNAL OF CHROMATOGRAPHY A , 2022 , 1681 .
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Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating Scopus
期刊论文 | 2022 , 1681 | Journal of Chromatography A
Efficient and selective solid-phase microextraction of polychlorinated biphenyls by using a three-dimensional covalent organic framework as functional coating EI
期刊论文 | 2022 , 1681 | Journal of Chromatography A
Bioinspired polydopamine-mediated metal-organic framework click-grafting aptamers functionalized fabric for highly-specific recognition of microcystin-leucine arginine SCIE
期刊论文 | 2022 , 1688 | JOURNAL OF CHROMATOGRAPHY A
WoS CC Cited Count: 5
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Abstract :

Fabricating functional electrospun nanofiber coating for highly selective extraction of microcystin-LR (MC-LR) was of significant importance for water-safety monitoring. Herein, a novel MOF@aptamer functional-ized nanofabric was presented via a facile and reliable strategy integrating polydopamine (PDA) mediation and thiol-ene chemistry and applied for specific recognition of the MC-LR model analyte. Using poly -dopamine (PDA) as the mediating layer, vinyl-UiO-66 MOF was grown in situ, followed by post-synthetic modification (PSM) of Zr4 + with vinyl phosphate and rapid UV-initiated click reaction of aptamers. Uni-form deposition of Zr-based MOF (vinyl-UiO-66) on the nanofibers was directly produced, and the tedious co-electrospinning process was abandoned to prevent the aggregation and encapsulation of MOF. Via an efficient "thiol-ene" chemistry, massive thiol-terminated aptamers were grafted on MOF within one step under friendly conditions, rather than the time-consuming nanoparticle adsorption or unfriendly cova-lent chemical reactions. As a result, the robust MOF@aptamer-coated nano-fabrics were obtained, and a highly selective performance towards MC-LR was illustrated with a limit of detection (LOD) at 0.002 ng/mL, good precision (CV < 8.3%), good repeatability (2.2-6.0%) when coupled with LC-MS. Almost 1-2 orders of magnitude higher detection sensitivity was exhibited than that of the common non-specific SPE/SPME fiber reported so far. Applied to water samples, the good matrix-resistance ability, and accept-able recovery yields were achieved with high specificity. This strategy might provide a rapid and friendly protocol to efficiently fabricate MOF@aptamer functionalized nano-fabrics through electrospinning and interfacial "thiol-ene" chemistry for highly-selective microextraction.(c) 2022 Elsevier B.V. All rights reserved.

Keyword :

Aptamer Aptamer Electrospun nanofiber Electrospun nanofiber Metal -organic framework Metal -organic framework Polydopamine Polydopamine Thiol-ene chemistry Thiol-ene chemistry

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GB/T 7714 Xie, Qian , Xu, Zhiqun , Huang, Guobin et al. Bioinspired polydopamine-mediated metal-organic framework click-grafting aptamers functionalized fabric for highly-specific recognition of microcystin-leucine arginine [J]. | JOURNAL OF CHROMATOGRAPHY A , 2022 , 1688 .
MLA Xie, Qian et al. "Bioinspired polydopamine-mediated metal-organic framework click-grafting aptamers functionalized fabric for highly-specific recognition of microcystin-leucine arginine" . | JOURNAL OF CHROMATOGRAPHY A 1688 (2022) .
APA Xie, Qian , Xu, Zhiqun , Huang, Guobin , Lin, Chenchen , Lin, Xucong . Bioinspired polydopamine-mediated metal-organic framework click-grafting aptamers functionalized fabric for highly-specific recognition of microcystin-leucine arginine . | JOURNAL OF CHROMATOGRAPHY A , 2022 , 1688 .
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Bioinspired polydopamine-mediated metal-organic framework click-grafting aptamers functionalized fabric for highly-specific recognition of microcystin-leucine arginine Scopus
期刊论文 | 2023 , 1688 | Journal of Chromatography A
Bioinspired polydopamine-mediated metal-organic framework click-grafting aptamers functionalized fabric for highly-specific recognition of microcystin-leucine arginine EI
期刊论文 | 2023 , 1688 | Journal of Chromatography A
A facile aptamer immobilization strategy to fabricate a robust affinity monolith for highly specific in-tube solid-phase microextraction SCIE
期刊论文 | 2021 , 146 (18) , 5732-5739 | ANALYST
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Abstract :

Developing a functional affinity monolithic column towards in-tube solid-phase microextraction (IT-SPME) for selective sample pretreatment is critical. Herein, a high-performance capillary affinity monolithic column with an ultra-high aptamer coverage density was rapidly fabricated via a simple adsorption strategy, in which aptamers with natural sequences were directly immobilized on an ammonium-based strongly cationic matrix. Limitations of the traditional biological or covalent methods such as time-consuming modification reactions, special requirement of active groups (e.g. -NH2 and -SH) on the aptamer, and low aptamer coverage density levels were avoided. An ultra-high coverage density of 8616 pmol mu L-1 was achieved with excellent stability, and the highest aptamer-modification level among all the current methods was reached. Selective recognition and high recovery yields of the model mycotoxin ochratoxin A (OTA) were achieved in 95.9 +/- 0.98%-97.9 +/- 0.28% (n = 3). In particular, there was little cross-reactivity towards the OTB analogue of only 0.5% even in the case of 250 fold of the analogue OTB, which was not reported in previous affinity monoliths. Upon sample analysis, satisfactory discriminations of trace OTA were obtained at 93.7 +/- 1.4%-95.5 +/- 2.5% (n = 3) in beer and wheat. A facile and direct method for efficiently fabricating an aptamer-based affinity monolith towards online selective IT-SPME was proposed.

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GB/T 7714 Zhao, Tingting , Tong, Shiqian , Zhou, Susu et al. A facile aptamer immobilization strategy to fabricate a robust affinity monolith for highly specific in-tube solid-phase microextraction [J]. | ANALYST , 2021 , 146 (18) : 5732-5739 .
MLA Zhao, Tingting et al. "A facile aptamer immobilization strategy to fabricate a robust affinity monolith for highly specific in-tube solid-phase microextraction" . | ANALYST 146 . 18 (2021) : 5732-5739 .
APA Zhao, Tingting , Tong, Shiqian , Zhou, Susu , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . A facile aptamer immobilization strategy to fabricate a robust affinity monolith for highly specific in-tube solid-phase microextraction . | ANALYST , 2021 , 146 (18) , 5732-5739 .
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A facile aptamer immobilization strategy to fabricate a robust affinity monolith for highly specific in-tube solid-phase microextraction EI
期刊论文 | 2021 , 146 (18) , 5732-5739 | Analyst
In situ photo-initiated polymerized oligonucleotide-functionalized hydrophilic capillary affinity monolith for highly selective in-tube microextraction of ochratoxin A mycotoxin SCIE
期刊论文 | 2021 , 188 (10) | MICROCHIMICA ACTA
WoS CC Cited Count: 2
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Abstract :

A photo-initiated polymerized oligonucleotide-grafted hydrophilic affinity monolithic column was synthesized in situ, and exploited for selective in-tube solid phase micro-extraction (IT-SPME) protocol towards the sensitive detection of ochratoxin A (OTA). Only 7 min was required for the rapid polymerization of aptamer-based affinity monolith, which was much less than the reaction time of most thermal polymerization (12-16 h) and sol-gel chemistry methods (up to 52 h). Characterizations such as polymerization recipes, structure morphology, FTIR spectrum, elemental mapping, mechanical stability, and specific recognition performance were evaluated. A significantly hydrophilic nature with a low contact angle of 15 degrees was observed, and a mixed-mode mechanism including aptamer affinity recognition and hydrophilic interaction (HI) was employed. By coupling with HPLC-fluorescence detection, the highly specific online recognition performance was achieved with an extremely low nonspecific adsorption of the analogues. The calibration curve of OTA was obtained in the concentration range 0.05-50.00 ng.mL(-1) with a limit of detection (LOD, S/N = 3) of 0.012 ng.mL(-1). Applied to sample analysis, acceptable recovery yields of 95.1 +/- 1.4% - 99.5 +/- 2.2% (n = 3) were obtained in beer and red wine. The proposed method lighted a promising way to efficiently preparing a hydrophilic aptamer-affinity monolith for highly specific recognition of trace mycotoxin by IT-SPME coupled with HPLC.

Keyword :

Hydrophilic affinity monolith Hydrophilic affinity monolith In-tube microextraction In-tube microextraction Ochratoxin A Ochratoxin A Oligonucleotide Oligonucleotide Photopolymerization Photopolymerization

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GB/T 7714 Zhao, Tingting , Ding, Xinyue , Lin, Chenchen et al. In situ photo-initiated polymerized oligonucleotide-functionalized hydrophilic capillary affinity monolith for highly selective in-tube microextraction of ochratoxin A mycotoxin [J]. | MICROCHIMICA ACTA , 2021 , 188 (10) .
MLA Zhao, Tingting et al. "In situ photo-initiated polymerized oligonucleotide-functionalized hydrophilic capillary affinity monolith for highly selective in-tube microextraction of ochratoxin A mycotoxin" . | MICROCHIMICA ACTA 188 . 10 (2021) .
APA Zhao, Tingting , Ding, Xinyue , Lin, Chenchen , Lin, Xucong , Xie, Zenghong . In situ photo-initiated polymerized oligonucleotide-functionalized hydrophilic capillary affinity monolith for highly selective in-tube microextraction of ochratoxin A mycotoxin . | MICROCHIMICA ACTA , 2021 , 188 (10) .
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