Covalent organic framework-based monolithic column with hydrophilic and π-π stacking interaction for efficient in-tube solid-phase microextraction of synthetic phenolic antioxidants

Wang, Jiabin; Hao, Yue; Ni, Bichen; Sun, Jian; Wu, Xiangzong; Lin, Xucong

doi:10.1016/j.microc.2022.108311

Cited by 10 publications

(5 citation statements)

References 45 publications

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“…COF-LZU-1 was selected due to the similar vaporization temperature of its monomers, p -phenylenediamine (PDA) and 1,3,5-triformylbenzene (TFB), while COF-TFP-PDA was selected to observe the effects of different functional groups on deposited COF films, as well as testing the formation of a β-ketoenamine-linked COF by CVD . COF-TAPB-TPA was selected to produce a COF with a larger pore size and test a pair of monomers with melting points greater than 50 °C apart . 4 × 5 cm films of COF-LZU1, COF-TFP-PDA, and COF-TAPB-TPA can be seen in Figure , panels d, e, and f, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…39 COF-TAPB-TPA was selected to produce a COF with a larger pore size and test a pair of monomers with melting points greater than 50 °C apart. 40 4 × 5 cm films of COF-LZU1, COF-TFP-PDA, and COF-TAPB-TPA can be seen in Figure 4, panels d, e, and f, respectively. Like the COF-42 film in Figure 1c, both COF-LZU1 and COF-TFP-PDA formed conformal COF sheets with more layers deposited in the colder regions of the substrate.…”

Section: Resultsmentioning

confidence: 99%

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Solutions Are the Problem: Ordered Two-Dimensional Covalent Organic Framework Films by Chemical Vapor Deposition

Daum,

Ajnsztajn,

Iyengar

et al. 2023

ACS Nano

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Covalent organic frameworks (COFs) are a promising class of crystalline polymer networks that are useful due to their high porosity, versatile functionality, and tunable architecture. Conventional solution-based methods of producing COFs are marred by slow reactions that produce powders that are difficult to process into adaptable form factors for functional applications, and there is a need for facile and fast synthesis techniques for making crystalline and ordered covalent organic framework (COF) thin films. In this work, we report a chemical vapor deposition (CVD) approach utilizing co-evaporation of two monomers onto a heated substrate to produce highly crystalline, defect-free COF films and coatings with hydrazone, imine, and ketoenamine COF linkages. This all-in-one synthesis technique produces highly crystalline, 40 nm–1 μm-thick COF films on Si/SiO2 substrates in less than 30 min. Crystallinity and alignment were proven by using a combination of grazing-incidence wide-angle X-ray scattering (GIWAXS) and transmission electron microscopy (TEM), and successful conversion of the monomers to produce the target COF was supported by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and UV–vis measurements. Additionally, we used atomic force microscopy (AFM) to investigate the growth mechanisms of these films, showing the coalescence of triangular crystallites into a smooth film. To show the wide applicability and scope of the CVD process, we also prepared crystalline ordered COF films with imine and ketoenamine linkages. These films show potential as high-quality size exclusion membranes, catalytic platforms, and organic transistors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Solutions Are the Problem: Ordered Two-Dimensional Covalent Organic Framework Films by Chemical Vapor Deposition

Daum,

Ajnsztajn,

Iyengar

et al. 2023

ACS Nano

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show abstract

“…The LOD is lower than that obtained using the gold nanoparticle/electrochemical reduced graphene oxidemodified glass carbon electrode (AuNPs/ERGO/GCE) [66], multi-walled carbon nanotubemodified screen-printed electrode (MWCNT/SPE) [67], multi-walled carbon nanotube/poly O-cresolphthalein complexone-modified paraffin wax-impregnated graphite electrode (MWC-NTs/POC/PIG) [68], graphene/vholine-modified GCE (Graphene/Ch/GCE) [65], poly copper (II) phosphate-modified carbon composite electrode (MCCE-Cu 3 (PO 4 ) 2− -Poly) [69], ZnO spheres@graphene oxide nanosheets-modified GCE (Zn TPHS@GO/GCE) [70], and lithium tetracyanoethylenide/titanium dioxide-modified indium tin oxide electrode (LiTCNE/TiO 2 /ITO) [71], but higher than that obtained on the molecularly imprinted polymer/molybdenum disulfide/Ag nanoparticle-chitosan-modified GCE (MIP/MoS 2 /Ag NPs-CS/GCE) [72]. The LOD is also higher than that obtained using solid phase extraction and gas chromatography/mass spectrometry (SPE-GC/MS, EPA/600/R-14/442, USA), the two-step microextraction-based GC/MS [73], or the covalent organic framework (COF)based monolithic column solid-phase microextraction-HPLC system (SPME-HPLC) [74].…”

Section: Electrochemical Detection Of Bhamentioning

confidence: 93%

“…Nanomaterials 2024, 14, x FOR PEER REVIEW 12 of 17 chitosan-modified GCE (MIP/MoS2/Ag NPs-CS/GCE) [72]. The LOD is also higher than that obtained using solid phase extraction and gas chromatography/mass spectrometry (SPE-GC/MS, EPA/600/R-14/442, USA), the two-step microextraction-based GC/MS [73], or the covalent organic framework (COF)-based monolithic column solid-phase microextraction-HPLC system (SPME-HPLC) [74].…”

Section: Electrochemical Detection Of Bhamentioning

confidence: 93%

“…The limit of quantification is 39.6 nM based on ten signalto-noise ratios (S/N = 10). The analytical performance of various methods for the detection of CEA is summarized in Table S1 (Supporting Information) [65][66][67][68][69][70][71][72][73][74]. The LOD is lower than that obtained using the gold nanoparticle/electrochemical reduced graphene oxidemodified glass carbon electrode (AuNPs/ERGO/GCE) [66], multi-walled carbon nanotubemodified screen-printed electrode (MWCNT/SPE) [67], multi-walled carbon nanotube/poly O-cresolphthalein complexone-modified paraffin wax-impregnated graphite electrode (MWC-NTs/POC/PIG) [68], graphene/vholine-modified GCE (Graphene/Ch/GCE) [65], poly copper (II) phosphate-modified carbon composite electrode (MCCE-Cu 3 (PO 4 ) 2− -Poly) [69], ZnO spheres@graphene oxide nanosheets-modified GCE (Zn TPHS@GO/GCE) [70], and lithium tetracyanoethylenide/titanium dioxide-modified indium tin oxide electrode (LiTCNE/TiO 2 /ITO) [71], but higher than that obtained on the molecularly imprinted polymer/molybdenum disulfide/Ag nanoparticle-chitosan-modified GCE (MIP/MoS 2 /Ag NPs-CS/GCE) [72].…”

Section: Electrochemical Detection Of Bhamentioning

confidence: 99%

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Highly Sensitive Electrochemical Determination of Butylated Hydroxyanisole in Food Samples Using Electrochemical-Pretreated Three-Dimensional Graphene Electrode Modified with Silica Nanochannel Film

Huang,

Zhang,

et al. 2024

Nanomaterials

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The sensitive detection of antioxidants in food is essential for the rational control of their usage and reducing potential health risks. A simple three-dimensional (3D) electrode integrated with an anti-fouling/anti-interference layer possesses great potential for the direct and sensitive electrochemical detection of antioxidants in food samples. In this work, a 3D electrochemical sensor was developed by integrating a 3D graphene electrode (3DG) with vertically ordered mesoporous silica film (VMSF), enabling highly sensitive detection of the common antioxidant, butylated hydroxyanisole (BHA), in food samples. A simple electrochemical polarization was employed to pre-activate the 3DG electrode (p3DG), enhancing its hydrophilicity. Using the p3DG as the supporting electrode, stable modification of VMSF was achieved using the electrochemical assisted self-assembly (EASA) method, without the need for any adhesive agents (VMSF/p3DG). Taking BHA in food as a model analyte, the VMSF/p3DG sensor demonstrated high sensitivity, due to the enrichment by nanochannels, towards BHA. Electrochemical detection of BHA was achieved with a linear range of 0.1 μM to 5 μM and from 5 μM to 150 μM with a low limit of detection (12 nM). Owing to the fouling resistance and anti-interference capabilities of VMSF, the constructed 3D electrochemical sensor can be directly applied for the electrochemical detection of BHA in complex food samples.

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Sustainable approaches to analyzing phenolic compounds: a green chemistry perspective

Makhija,

Barik,

Mehta

et al. 2024

ANAL. SCI.

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Covalent organic framework-based monolithic column with hydrophilic and π-π stacking interaction for efficient in-tube solid-phase microextraction of synthetic phenolic antioxidants

Cited by 10 publications

References 45 publications

Solutions Are the Problem: Ordered Two-Dimensional Covalent Organic Framework Films by Chemical Vapor Deposition

Solutions Are the Problem: Ordered Two-Dimensional Covalent Organic Framework Films by Chemical Vapor Deposition

Highly Sensitive Electrochemical Determination of Butylated Hydroxyanisole in Food Samples Using Electrochemical-Pretreated Three-Dimensional Graphene Electrode Modified with Silica Nanochannel Film

Sustainable approaches to analyzing phenolic compounds: a green chemistry perspective

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