A controllably fabricated polypyrrole nanorods network by doping a tetra-β-carboxylate cobalt phthalocyanine tetrasodium salt for enhanced ammonia sensing at room temperature

Gai, Shijie; Wang, Xiaolin; Zeng, Kun; Miao, Shoulei; Wu, Yiqun; Wang, Bin

doi:10.1039/d3ra00103b

Cited by 4 publications

(1 citation statement)

References 92 publications

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“…The chemical state of O in different groups was also significantly different: the peak position of ethanol was close to that of control, indicating that ethanol did not change the chemical structure of demineralized dentin. In the GA group, the C=O double bond did not change significantly, and the C-O bond shifted slightly to the direction of low binding energy, indicating that GA could interact with O atoms in demineralized dentin collagen ( Gai et al, 2023 ). In the TF3 group, the peaks of C-O bond and C=O bond were significantly shifted to the direction of high binding energy.…”

Section: Resultsmentioning

confidence: 99%

Theaflavin −3,3'-digallate/ethanol: a novel cross-linker for stabilizing dentin collagen

Chen,

Wei,

Liang

et al. 2024

Front. Bioeng. Biotechnol.

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ObjectivesTo study the ability of theaflavin-3,3’-digallate (TF3)/ethanol solution to crosslink demineralized dentin collagen, resist collagenase digestion, and explore the potential mechanism.MethodsFully demineralized dentin blocks were prepared using human third molars that were caries-free. Then, these blocks were randomly allocated into 14 separate groups (n = 6), namely, control, ethanol, 5% glutaraldehyde (GA), 12.5, 25, 50, and 100 mg/ml TF3/ethanol solution groups. Each group was further divided into two subgroups based on crosslinking time: 30 and 60 s. The efficacy and mechanism of TF3’s interaction with dentin type I collagen were predicted through molecular docking. The cross-linking, anti-enzymatic degradation, and biomechanical properties were studied by weight loss, hydroxyproline release, scanning/transmission electron microscopy (SEM/TEM), in situ zymography, surface hardness, thermogravimetric analysis, and swelling ratio. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy were utilized to explore its mechanisms. Statistical analysis was performed using one and two-way analysis of variance and Tukey’s test.ResultsTF3/ethanol solution could effectively crosslink demineralized dentin collagen and improve its resistance to collagenase digestion and biomechanical properties (p < 0.05), showing concentration and time dependence. The effect of 25 and 50 mg/ml TF3/ethanol solution was similar to that of 5% GA, whereas the 100 mg/mL TF3/ethanol solution exhibited better performance (p < 0.05). TF3 and dentin type I collagen are mainly cross-linked by hydrogen bonds, and there may be covalent and hydrophobic interactions.ConclusionTF3 has the capability to efficiently cross-link demineralized dentin collagen, enhancing its resistance to collagenase enzymatic hydrolysis and biomechanical properties within clinically acceptable timeframes (30 s/60 s). Additionally, it exhibits promise in enhancing the longevity of dentin adhesion.

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Section: Resultsmentioning

confidence: 99%

Theaflavin −3,3'-digallate/ethanol: a novel cross-linker for stabilizing dentin collagen

Chen,

Wei,

Liang

et al. 2024

Front. Bioeng. Biotechnol.

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A fast response NH3 gas sensor based on phthalocyanine-optimized non-covalent hybrid of polypyrrole

Zhang,

Wang,

Wang

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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A Fast Response Nh3 Gas Sensor Based on Phthalocyanine-Optimized Non-Covalent Hybrid of Polypyrrole

Zhang,

Wang,

Wang

et al. 2024

Preprint

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A controllably fabricated polypyrrole nanorods network by doping a tetra-β-carboxylate cobalt phthalocyanine tetrasodium salt for enhanced ammonia sensing at room temperature

Abstract: Anionic doping of TcCoPcTs significantly optimizes the morphology, conductivity and NH3-sensing performance of polypyrrole sensors.

Cited by 4 publications

References 92 publications

Theaflavin −3,3'-digallate/ethanol: a novel cross-linker for stabilizing dentin collagen

Theaflavin −3,3'-digallate/ethanol: a novel cross-linker for stabilizing dentin collagen

A fast response NH3 gas sensor based on phthalocyanine-optimized non-covalent hybrid of polypyrrole

A Fast Response Nh3 Gas Sensor Based on Phthalocyanine-Optimized Non-Covalent Hybrid of Polypyrrole

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