International Journal of Polymeric Materials and Polymeric Biomaterials
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2021
·
IF 2.604
Yan Zhang,Hai-Chao Zhao,Li-Jing Zhu
Mussel-inspired bionics technology has attracted extensive attention for the surface modification of porous materials. The adhesion effect of the mussel mucin comes is mainly from hydroxylation. Hence, polysulfone membrane was modified by co-deposition of catechol with hydroxyl and L-lysine with biocompatibility. Flux of the membrane exceeds 120 L m−2 h−1, the ultra-high rejection rate to bovine serum albumin and lysozyme. Moreover, the modified membranes exhibited enhanced antifouling ability, antibacterial property and adhesion resistance to E. coli with the synergy between catechol and L-lysine. The fabricated membranes can further lay the foundation for the industrial production of deposited membranes.
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高影响因子
EUROPEAN POLYMER JOURNAL
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2020
·
IF 3.862
Youjun He,Jiming Chen,Irum Rafique,Zaijun Lu
The catechol groups in mussel adhesive proteins exhibit excellent adhesion property to the skin and tissue surfaces. Inspired by catechol groups, the aim of this study is to synthesize the star-shaped polycaprolactone bio-adhesive bearing catechol end-groups (s-PCL 19 -CA 9 ). Firstly, star-shaped polycaprolactone was synthesized through ring-opening polymerization of caprolactone monomers initiated by β-cyclodextrin, and then the s-PCL 19 -CA 9 was obtained through end-group functionalization using succinic anhydride and dopamine. The structure of s-PCL 19 -CA 9 was characterized by 1 H NMR, FTIR, and static light scattering. Adhesive strength measurements demonstrate that the incorporation of multifunctional catechol groups endows the crosslinked s-PCL 19 -CA 9 with an excellent adhesion property (102 ± 10 kPa). The swelling ratio of crosslinked s-PCL 19 -CA 9 is as low as 3.4 ± 0.2% owing to the hydrophobicity of PCL and the crosslinking structures. Besides, the cytotoxicity studies show that s-PCL 19 -CA 9 is noncytotoxic. The TGA measurements indicate that s-PCL 19 -CA 9 possesses a good thermal stability. Therefore, this work provides a new way for developing multifunctional bio-adhesives with excellent adhesion property and low swelling ratio.
研究领域:
材料科学
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生物医学工程
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化学
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Qiang Cao,Yushi Xiao,Na Liu,Rong Huang,Chen Ye,ChiHsien Huang,Huan Liu,Gang Han,Lidong Wu
Metal-organic frameworks (MOFs) have potential as heterogeneous biomimetic catalysts due to their high surface area, tunable porosity, and diversity of metals and functional groups. However, the activity and substrate specificity of pure monomeric MOFs still must be improved. Here, a size-selective MOF coating on the external surface of a biomimetic MOF is used to overcome these limitations of pure monomeric MOFs. The synthesis process of the biomimetic material involved first the coating of porous coordination network (PCN-222) cores with polyvinylpyrrolidone (PVP) as a structure-directing agent and then the modification of zeolitic imidazolate frameworks (ZIF-8). The yolk/shell PCN-222@ZIF-8-based sensor showed high selectivity for catechol but not for dopamine or L-DOPA. The PCN-222@ZIF-8 hybrid material-based sensor displayed 10 times more sensitivity than the PCN-222-based sensor, with low limit of detection (LOD) at 33 nmol L −1 . Thus, ZIF-8 is a shell which allows the diffusion of specific substrate to the active sites of the PCN-222 and enriches the substrate. Furthermore, the PCN-222@ZIF-8 exhibits solvent adaptability, which overcomes the drawback of the natural HRP enzyme. This work opens a new avenue for construction of MOF@MOF biomimetic sensors and other applications.
研究领域:
材料科学
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分析化学
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生物医学工程
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
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IF 3.807
Yu Xin,Ning Wang,Chunli Wang,Wei Gao,Mingli Chen,Nazhen Liu,Jizhou Duan,Baorong Hou
A covalent organic framework (COF) modified carbon paste electrode (CPE) was used for the electrochemical detection of hazardous hydroquinone (HQ) and catechol (CC). Due to the advantages of TpBD-COF (large surface area, abundant functional groups and high chemical stability), rapid quantitative determination of HQ and CC was accomplished by differential pulse voltammetry (DPV). Under the optimal conditions, the resultant sensor showed an extended linear response range for HQ and CC (1–2000 μmol L −1 ), and the detection limits were 0.31 and 0.46 μmol L −1 (S/N = 3) respectively. The simultaneous determination of HQ and CC can be accomplished by data deconvolution. In binary solutions with one constant constituent concentration, a linear relationship was established between the deconvoluted peak current and concentration of the changing constituent. In addition, the electrochemical sensor showed strong anti-interference ability, good reproducibility (a relative standard deviation of 0.99% for HQ and 0.77% for CC, n = 5) and applicability in real sample detection (with spiking recoveries from 97.7% – 101.6% for HQ and 100.3% – 103.3% for CC). These results demonstrate that COF modified carbon materials are promising candidates for efficient electrochemical detection of phenolic compounds .
研究领域:
分析化学
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环境科学
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材料科学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Kefei Zhao,Bin Wang,Chenhui Zhang,Yongfei Guo,Yue Ma,Zilu Li,Tianyue Wu,Zhenping Bao,Yuxia Gao,Fengpei Du
Retention, a crucial process in pesticide spraying, is closely related to pesticide utilization efficiency and severely impacted by both low surface energy components and micro/nanostructures of foliage. To date, many pesticide carriers have been designed based on either foliar components or structures to enhance pesticide retention. However, as far as we know, there have been no reports taking these two factors into account simultaneously. Herein, we present a novel strategy to address this issue by taking advantage of both non-covalent interactions and topology effect between pesticide carriers and crop leaves. By grafting adhesive catechol-containing polymers onto the surface of hat-shape carriers (HSCs) via a one-step esterification reaction, a series of pesticide-loaded catechol functionalized hat shape carriers (pesticide-loaded Cat-HSCs ) with high loading capacity were successfully prepared. Upon spraying on rice and wheat leaves, these functionalized carriers could target both the micropapillae and nanosplinters on foliage driven by the “hanger-hat” topology effect and non-covalent interactions, resulting in great improvement of foliar affinity, pesticide retention, and flush resistance. Moreover, pesticide-loaded Cat-HSCs possess a 15-day sustained-release property and satisfactory efficacy in controlling wheat powdery mildew. Overall, our resource-saving pesticide carrier provides an effective strategy for prolonging pesticide retention and reducing pesticide loss in agro-production.
研究领域:
农业科学
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材料科学
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高影响因子
MOLECULAR NUTRITION & FOOD RESEARCH
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2013
·Vol. 57
·期 5
·877-885
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IF 4.31
Zhong-Jian Chen,Yan-Qing Dai,Si-Si Kong,Fei-Feng Song,Li-Ping Li,Jian-Feng Ye,Ru-Wei Wang,Su Zeng,Hui Zhou,Hui-Di Jiang
Scope The study aimed to investigate the regioselectivity of methylation of luteolin (3′,4′,5,7-tetrahydroxyflavone) in human in vitro and in vivo. Methods and results Recombinant human catechol- O -methyltransferase (COMT) and human liver S9 were utilized to study the kinetics of meta (3′)- and para (4′)- methylation of luteolin, and urine samples from volunteers after giving a luteolin-containing formulation were collected to determine the ratio of para-/meta-production. The results showed luteolin favored a para-methylation, with a ratio of of para-/meta-production in CL int (1.43 in recombinant human COMT and 1.47 in human liver S9), which was contrary to the known substrates of COMT. However, the result of urine sample assay showed a preference of meta-methylation with a ratio of of para-/meta-production (0.460 ± 0.126). To elucidate the mechanism for different preference of methylation of luteolin in vitro and in vivo, metabolism stability of the meta- and para-methylated luteolin was evaluated in human liver microsomes and recombinant human CYP450s, which revealed that para-methylated luteolin was more easily demethylated by human CYP1A2 and CYP3A4/5 than meta-methylated luteolin. Conclusion Luteolin was a rare substrate of human COMT favoring a para-methylation, but further demethylation by human CYP1A2 and CYP3A4/5 caused a preference of accumulation in meta-methylated luteolin in vivo.
研究领域:
药理学
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生物化学
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分子生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Chengyuan Sun,Xuelian Zeng,Shihang Zheng,Yulan Wang,Zhiyu Li,Haining Zhang,Lanlan Nie,Yufeng Zhang,Yanbing Zhao,Xiangliang Yang
For clinical traumas and surgeries, adhesives that can be used in humid environments is considerably challenging. Inspired by the adhesive proteins of mussel, a gallic acid-modified chitosan-based (CS-GA) hydrogel was prepared through discharge plasma technology, which was first reported to realise polysaccharide-macromolecule-grafted phenolic acids. CS-GA hydrogels with different grafting amounts were successfully prepared, and their structures were characterised using ultraviolet, 1 H nuclear magnetic resonance and Fourier-transform infrared spectroscopy. The modified material exhibited excellent antioxidant properties, which were verified using classical DPPH radical scavenging and reducibility experiments. CS-GA was oxidised in air under physiological conditions and cross-linked to form a hydrogel, with unusual toughness and adhesion properties. The high biocompatibility and haemocompatibility of this hydrogel were showed through cytotoxicity and haemolysis experiments. Furthermore, the abilities of the hydrogel to promote wound healing and haemostasis were evaluated using in vivo rat whole layer skin defect and liver haemorrhage models, respectively. These abilities can provide many possibilities for the development of multifunctional biomedical adhesives.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2017
·Vol. 134
·期 42
·45422
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IF 1.86
Wen-Ze Qiu,Yong Du,Yan Lv,Hao-Cheng Yang,Zhi-Kang Xu
Thin-film composite (TFC) nanofiltration (NF) membranes were fabricated via the codeposition of catechol (CCh) and polyethyleneimine (PEI) followed by subsequent interfacial polymerization with trimesoyl chloride (TMC) on the surface of polysulfone ultrafiltration substrates. The detailed structures and surface properties were characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, ζ potential analysis, and water contact angle measurement. The surface properties, including the roughness, hydrophilicity, surface potential, and NF performances, were facilely tuned through variation of the codeposition time of CCh–PEI for the prepared TFC membranes. The optimized membrane achieved a high rejection (ca. 93%) of MgCl 2 with a flux of around 31 L m −2 h −1 under 0.7 MPa. The results also reveal that the codeposition process endowed the final membranes with much better structural stability in alcohol and improved chlorine resistance compared to commonly interfacial polymerized ones with PEI and TMC. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45422.
研究领域:
材料科学
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膜技术
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环境工程
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2017
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IF 3.012
Qi Chen,Xi Li,Xinmin Min,Dan Cheng,Jian Zhou,Yugang Li,Zhizhong Xie,Peng Liu,Weiquan Cai,Chaocan Zhang
A composite (MOF-GO) of Cu-based MOF-199 (MOF) and graphene oxide (GO) was prepared by the solvothermal method and used as the modified material to fabricate an electrochemical sensor for the determination of catechol (CT) and hydroquinone (HQ). The modification was carried out through the electrodeposition of MOF-GO composites on the glassy carbon electrode and the transformation of MOF-GO to MOF-ERGO by an electrochemical reduction . Differential pulse voltammetry (DPV) was employed for exploring the electrochemical properties of the as-prepared electrode and the oxidation of CT and HQ at the modified electrode . Under the optimized experimental condition, the linear calibration curve was obtained in the range from 0.1 μM to 566 μM for CT ( R 2 = 0.997) and 0.1 μM to 476 μM for HQ ( R 2 = 0.999) with the same low detection limit of 0.1 μM ( S / N = 3). The experimental results showed that the modified electrode was easily fabricated in control and exhibited the outstanding stability. The validity for practical samples detection of CT and HQ was also demonstrated with satisfactory results.
研究领域:
分析化学
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电化学传感器
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高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
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2016
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IF 4.569
Zheng Xia,Wenze Qiu,Han Bao,Bin Yang,Lecheng Lei,Zhikang Xu,Zhongjian Li
A novel solid polymer electrolyte was developed by co-deposition of catechol (CCh) and polyethyleneimine (PEI) on a polypropylene membrane for electrochemical reduction of CO 2 (ERC) in gas phase. ERC performance was both investigated in a gas-gas mode and a gas-liquid mode. The maximum CO production rate was 121 μmol/h and the faradaic efficiency was 51% in the gas-liquid mode, which were much higher than those obtained with AM-7001 under the same condition. The high loading rate of quaternary ammonium ions on the membrane and the large surface area provided by the porous nano-structure of the membrane contribute to the high ERC efficiency. Furthermore, the cost of the CCh/PEI-Q membrane was much lower than commercial Nafion membranes, endowing this novel composite SPE with great potential in industrial application.
研究领域:
材料科学
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电化学
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环境科学
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产品关联
DOI
高影响因子
ChemistrySelect
·
2023
·Vol. 8
·期 34
·e202302723
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IF 2.1
Jingnan Liu,Haoran Jia,Jiawei Guo,Wen Zhang
Graphical Cu 2 O−Ag nanocomposites were prepared and can be used with facile method for the electrochemical quantification of catechol. The rational surface configuration of Cu 2 O−Ag showed synergistic effects that improved the adsorption of catechol, facilitating interfacial electron transfer. Highly sensitive and selective electrochemical sensors are essential for human health, especially for monitoring the state of environmental pollutant content. Here, Cu 2 O nanocubes uniformly decorated with Ag nanoparticles were synthesized by a tractable wet-chemical method. The electrochemical studies confirm that the Cu 2 O-Ag-16 composite shows increased electrochemical activity for catechol determination compared with either the bare Cu 2 O or the other two as-proposed Cu 2 O−Ag catalysts (Cu 2 O−Ag-8, Cu 2 O−Ag-24). More specifically, the Cu 2 O−Ag-16 presents excellent electrochemical responses towards catechol detection over wide linear ranges of 0.05 μM – 1 mM and 1 mM – 5 mM, with high sensitivity and low detection limits (50 nM). Furthermore, the as-proposed sensor also displays good reproducibility, with a relative standard deviation of 2.3 % (n=3). Satisfactory recoveries in the range of 98.3 % to 101.2 % or 98 % to 100.7 % for lake water and/or tap water indicate the reliability of the sensor for catechol detection in practical applications. Constructing such composite structures to manipulate the local charge distribution for outstanding electrochemical sensing properties would provide us with an innovative strategy to explore other highly efficient electrode materials.
研究领域:
分析化学
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环境科学
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材料科学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Meng Yang,Hao Guo,Lei Sun,Ning Wu,Mingyue Wang,Fan Yang,Tingting Zhang,Junye Zhang,Zhilan Pan,Wu Yang
In this present work, a carboxylated multi-walled carbon nanotubes (MWCNT-COOH) and covalent triazine framework (CTF-1) co-modified glassy carbon electrode (GCE) is prepared and used for simultaneous electrochemical detection of hydroquinone (HQ) and catechol (CC). Due to the synergistic effect between the high electrocatalytic activity and good conductivity of MWCNT-COOH and large surface area of CTF-1, the prepared modified electrode exhibits good selectivity and high sensitivity for the simultaneous determination of HQ and CC. In the neutral phosphate buffer, HQ and CC produce a pair of well-defined redox peaks on the MWCNT-COOH/CTF-1/GCE. The concentrations of CC and HQ show good linearity in the range of 2–280 μM and the detection limits of HQ and CC are 0.12 μM and 0.17 μM, respectively. The prepared electrochemical sensor can be employed to determine contents of HQ and CC in real samples.
研究领域:
分析化学
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环境科学
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材料科学
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高影响因子
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