CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Zhiwei Yu,Qianru Sun,Yu Sheng,Yu Xi,Liangjiu Bai,Wenxiang Wang,Hou Chen,Huawei Yang,Lixia Yang
The hazardous indoor air pollutants of formaldehyde (HCHO) are harmful for human health. Nowadays, it is important to design and fabricate green and efficient HCHO removal materials for HCHO removal from polluted indoor air. In this manuscript, cellulose nanocrystals (CNCs) as green nanomaterials were successfully surface-initiated by 2-(methacryloyloxy)ethyl acetoacetate (MEAA) as functional monomer via surface-initiated Activator Generated by Electron Transfer Atom Transfer Radical Polymerization (SI-AGET ATRP) for the application in removal of HCHO. The employment of CNCs/Poly(2-(methacryloyloxy)ethyl acetoacetate) (CNCs@PMEAA) as nanocomposites were further implanted self-healing waterborne coating for an effective way to remove HCHO. From the result, the HCHO removal efficiency reached 97.5% of CNCs@PMEAA-type coating within 300 min at room temperature , which was much higher than that of the conventional coating (82.8%). This study provides some promising green methods for designing nanocomposite's waterborne coating to remove HCHO at room temperature.
研究领域:
材料科学
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环境科学
·
绿色化学
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Fuchun Si,Xiaojing Cui,Yaping Zhang,Yifan Li,Huaixia Yang,Yanju Liu
Down-regulator of transcription 1 (DR1) is a crucial biomarker closely related to Hashimoto's Thyroiditis (HT). In this study, a highly selective electrochemical biosensor for ultrasensitive detection of DR1 was prepared by combining nanomaterials CMK-3 @AuNPs and atom transfer radical polymerization (ATRP) signal amplification strategy for the first time. Based on the specific recognition of antigen and antibody, the sensor has strong selectivity. CMK-3 @AuNPs can not only increase the conductivity of the electrode, but also provide more active sites for biological molecules, so as to effectively amplify the output signal. The FMMA monomers were polymerized on the electrode surface through ATRP reaction, which made the electrochemical signal increased significantly. Under optimal conditions, the fabricated electrochemical biosensor showed a wide detection range of 5 × 10 -4 ng/mL ∼ 5 × 10 2 ng/mL with a detection limit as low as 0.159 pg/mL. In addition, the electrochemical biosensor has good stability and anti-interference ability. Therefore, the sensor has broad prospects in the detection of biomarkers.
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2013
·
IF 3.172
Zhihua Fu,Na Zhang,Jie Liu,Tiesheng Li,Wenjian Xu,Fei Wang,Tao Wang,Zhen Zhai,Linlin Liu,Luyan Mao,Yangjie Wu
Poly (N-hydroxy methyl acrylamide)-grafted silicon, glass, and quartz surfaces were successfully prepared by surface-initiated atom transfer radical polymerization (SI-ATRP) with methyl alcohol/water mixtures as solvents and CuCl/2,2-dipyridyl as a catalyst. The modified surfaces were characterized by water contact angle, atomic force microscope (AFM), Fluorescence spectrophotometer, Low-angle X-ray diffraction (LAXRD), and X-ray Photoelectron Spectroscopy (XPS). The results showed that the homogeneous and well hydrophilic N-hydroxymethyl acrylamide polymer brushes (NHAM-brushes), which had high hydrophilic properties and the added advantage of providing 3-D coatings with higher binding capacities, were obtained successfully. Cyclopalladated arylimine functionalized polymer brushes were also obtained by reacting HAM-brushes with N,N′-Carbonyldiimidazole (CDI) and cyclopalladated arylimine. The catalyst functionalized PHAM-brushes had good catalytic activity in heterogeneous compared to homogeneous catalyst and exhibited much improved stability and recyclability over time in Suzuki cross-coupling reaction.
研究领域:
材料科学
·
化学工程
·
表面化学
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产品关联
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2020
·
IF 3.333
Yuchun Huang,Yujian Liu,Saleem Muhammad,Qun Jia,Yuansheng Ding,Yougen Chen
The present work describes the detailed macromolecular design, synthesis, and characterization of a series of mono- and bi-terminal functionalized polystyrenes (PSs) by the combination of atom transfer radical polymerization (ATRP) and copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) reaction. We further study the effect of the incorporated end groups on the glass transition behavior of the resulting polymers. The mono and bi functionalized polystyrenes were synthesized by using 1-phenylethyl bromide and 1,4-bis(bromomethyl)benzene as the initiators to form bromo mono-end functionalized PS (PS-Br) and bromo bi-terminal functionalized PS (Br-PS-Br), respectively. PS-Br and Br-PS-Br were then transformed to azido mono- and bi-terminal functionalized PSs (PS-N 3 and N 3 -PS-N 3 ) by S N 2-type reaction with sodium azide . PS-N 3 and N 3 -PS-N 3 were then subjected to CuAAC reactions with various alkynes like 1-decyne, 1-hexyne, trimethylsilylacetylene, phenylacetylene , and 4-ethynyl-1,1′-biphenyl respectively to give a series of alkyl or aromatic mono- and bi-terminal functionalized PSs (PS-Rs and R-PS-Rs), such as PS-Rs of PS-C 8 H 17 , PS-C 4 H 9 , PS-SiMe 3 , PS-Ph, PS-biPh, and R-PS-Rs of C 8 H 17 -PS-C 8 H 17 , C 4 H 9 -PS-C 4 H 9 , SiMe 3 -PS-SiMe 3 , Ph-PS-Ph, and biPh-PS-biPh. PS-SiMe 3 and SiMe 3 -PS-SiMe 3 were then transformed to the corresponding PS-H and H-PS-H through the detrimetylsilylation reaction with tetra- n -butylammonium fluoride (TBAF). Among the five end groups, -C 8 H 17 and -C 4 H 9 were with great flexibility; -H was viewed as a standard; and -Ph and -biPh groups represented the typical rigid moieties. The effect of these end groups on glass transition behavior was thoroughly investigated based on the above macromolecular design.
研究领域:
高分子化学
·
材料科学
✓ 已验证
DOI
高影响因子
POLYMER
·
2019
·
IF 3.771
Miaomiao Wang,Xiao Wang,Kangmin Zhang,Mingyuan Wu,Qingyun Wu,Jiuyi Liu,Jianjun Yang,Jianan Zhang
Aminated n-HAP-g-polyacrylonitrile (n-HAP-g-APAN) particle brushes were developed for highly efficient heavy metal removal based on surface-initiated ATRP (SI-ATRP) and subsequent amination. An efficient one-step method for morphology controlled synthesis of ATRP initiator immobilized n-HAP (n-HAP-Br) was realized by using 2-bromoisobutyric acid as tetherable initiator. Uniform and individually dispersed n-HAP-Br NCs were obtained with controlled morphology and particle size by adding portion of water miscible organic solvents to rational adjusting aqueous dispersion medium. Aminated n-HAP-g-APAN displayed record-high adsorption capacity of heavy meatal ions due to the combined contributions of grafted APAN providing pendent amino diethylenepentamine as chelating groups and n-HAP core towards heavy metal ions (pure n-HAP of q e = 284.4 mg/g vs n-HAP-g-APAN of q e = 944.4 mg/g). The proposed one-step direct bromination of n-HAP strategy provides the preparation of uniform n-HAP NCs ready for polymer grafting and further fabrication of n-HAP-g-polymers via SI-ATRP for various applications depending on the characteristic of grafted polymers.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2023
·
IF 1.4
Bo Zhang,Ruixin Wang
Compared with other types of sensors, capacitive flexible pressure sensors (CFPS), with low sensitivity, are more susceptible to environmental changes. It is still a considerable challenge to achieve high sensitivity, excellent mechanical properties and long-time structural stability simultaneously. Targeting the aforementioned issues, herein, Ti3C2 (MXene) with high dielectric constant was firstly chemically modified with a poly(ionic liquid) (PIL) via surface-initiated ATRP, and then combined with a porous polyurethane foam (PUF) 3D network structure via a one-step blending foaming method. Thanks to the organic-inorganic hybrid network based on the PU/MXene porous structures and the uniformly distributed micro-capacitor structure provided by MXene@PIL, the mechanical properties, structural stability, flame retardancy and dielectric properties of the composite foam were all significantly enhanced. When the content of MXene@PIL was 10%, the sensitivity of CFPS based on this dielectric were 17.1, 5.2, and 2.5/KPa in the pressure ranges of 0-1 KPa, 1-12 KPa and 12-100 KPa, respectively. In addition, the sensor showed the response and recovery times of 88 and 82 ms under a low pressure of 355 Pa. The light, flexible sensor prepared in this work is expected to be used in wearable devices to monitor physiological signals, and it should also be a good candidate for the next generation of man-machine interface characterization devices.
研究领域:
材料科学
·
高分子科学
·
纳米技术
·
传感器技术
·
化学工程
✓ 已验证
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2019
·
IF 4.959
Hongye Huang,Meiying Liu,Dazhuang Xu,Liucheng Mao,Qiang Huang,Fengjie Deng,Jianwen Tian,Yuanqing Wen,Xiaoyong Zhang,Yen Wei
Surface modification of carbon nanotubes (CNTs) through controlled living polymerization has demonstrated to be a useful route for preparation of CNTs based polymer composites. However, surface oxidation of CNTs is often required to generate functional groups, which can be further utilized for immobilization of polymerization initiator and grafting polymers. The surface oxidation procedure is rather complex, high energy cost, low efficient and will destroy the structure of CNTs. Therefore, the development of simple and efficient strategies for preparation of CNTs based composites should be of great research interest and raised much attention recently. In this work, a novel mussel inspired strategy that combination of ATRP and ring-opening reaction has been developed for simultaneous preparation of glycosylated and PEGylated CNTs for the first time. CNTs were first coated with polydopamine (PDA) through self-polymerization of dopamine under alkaline aqueous solution. Then polymerization initiator was immobilized on CNT-PDA through simple esterification and amidation reaction to obtain CNT-PDA-Br. The PEGylated CNTs were synthesized through ATRP using CNT-PDA-Br as initiator and polyethylene glycol monoester acrylate and itaconic anhydride (IA) as the monomers. Finally, glucosamine was conjugated with IA via ring-opening reaction. The successful preparation of glycosylated and PEGylated CNTs (CNT-PDA-Poly(PEGMA- co -IA)-Glu) was confirmed by a number of characterization techniques in details. The obtained CNTs based composites showed improved aqueous dispersibility and desirable cytocompatibility, implying their biomedical application potential. As compared with the conventional covalent strategies, the mussel inspired method described in this work will not destroy the structure for introduction functional groups on the surface of CNTs, that can occur under rather mild experimental conditions, including room temperature, short reaction time and aqueous solution. On the other hand, the mussel inspired chemistry can also be used for surface modification of almost any materials regardless of their size, morphology and compositions. Therefore, we believe that the mussel inspired strategy should be a general method for fabrication of various polymer composites for different applications.
研究领域:
材料科学
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纳米技术
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2013
·
IF 2.112
Jianming Pan,Hui Hang,Xiuxiu Li,Wenjing Zhu,Minjia Meng,Xiaohui Dai,Jiangdong Dai,Yongsheng Yan
Temperature responsive molecularly imprinted polymers (T-MIPs) were prepared based on the surface of yeast by electron transfer atom transfer radical polymerization (AGET ATRP). The as-prepared T-MIPs were charcterized by FT-IR, SEM, TGA and elemental analysis, which indicated that T-MIPs exhibited thermal stability and composed of temperature responsive imprinted layer. Then T-MIPs were evaluated as sorbents to selectively recognise and release cefalexin (CFX) molecules. The results suggested binding properties of T-MIPs were related to the testing temperature. The maximum adsorption capacity of T-MIPs at 303 K was 59.4 mg g −1 , and the maximum release proportion for T-MIPs at 293 K in water for 24 h was 71.08%. The selective recognition experiments demonstrated high affinity and selectivity of T-MIPs towards CFX over competitive compounds, and the specific recognition of binding sites may be based on the distinct size, structure and functional group to the template molecules.
研究领域:
生物材料学
·
分子生物学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Anyao Ma,Jiakang Zhang,Na Wang,Liangjiu Bai,Hou Chen,Wenxiang Wang,Huawei Yang,Lixia Yang,Yuzhong Niu,Donglei Wei
Robust and self-healable nanocomposite hydrogels were realized by the encapsulation of components of photoinduced electron transfer–atom transfer radical polymerization (PET–ATRP) into surface-modified silica nanoparticles (SiO2). The prepared SiO2@P4VP was in the form of self-healing nanocomposite hydrogels, where 4-vinylpyridine (4VP) was polymerized through PET–ATRP with organic photocatalyst Rhodamine B. The modified nanoparticles were characterized by X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and Fourier transform infrared (FT-IR) spectroscopy. The nanocomposite hydrogels can be healed rapidly and autonomously without any stimulation at ambient temperature. Specifically, the nanocomposite hydrogels have a tensile strength of about 2.90 MPa, which recovered to 77.0% after 12 h, and an elongation at break of about 730%. These self-healing hydrogels with cheap raw material, possessing better strength and self-healing performance, will have broad prospects.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2022
·Vol. 43
·期 6
·3753-3764
·
IF 3.531
Minqi Sun,Ling Zhang,Chunzhong Li
To make up for the brittleness of poly(lactic acid) (PLA), people usually introduce flexible poly(butylene adipate- co -terephthalate) (PBAT) which greatly reduces the strength and limits toughening effect due to unfavorable immiscibility of the blends. Herein, functionalized biodegradable cellulose nanocrystals (CNCs) were used as enhancement to simultaneously improve strength and toughness of PLA/PBAT blend. To improve the interaction between PLA and PBAT, poly(glycidyl methacrylate) (PGMA) was grafted on the surface of CNC via a surface-initiated atom transfer radical polymerization reaction. After the addition of CNC-PGMA30, the phase size of PLA/PBAT (70/30 wt%) reduces dramatically, showing improved interfacial compatibility between PLA and PBAT. Meanwhile, prepared PLA/PBAT/CNC1.0-PGMA30 composite has tensile strength of 49.6 MPa and elongation at break of 268.5%, demonstrating considerably increased strength and toughness in comparison to the pure PLA/PBAT blend.
研究领域:
材料科学
·
生物降解材料
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Xiaolun Peng,Rongxiang He,Junhui Xu,Chunhua Cao,Wei Wen,Xiuhua Zhang,Shengfu Wang
The sensitive and accurate detection of cardiac troponin I (cTnI) as a gold biomarker for cardiovascular diseases at an early stage is crucial but has long been a challenge. In this study, we presented such an electrochemical (EC) aptasensor by combining hybridization chain reaction (HCR)-enhanced electrochemically mediated atom transfer radical polymerization (eATRP) amplification with high-efficient separation of magnetic beads (MBs). Aptamer-modified MBs empowered effective recognition and separation of cTnI from complex samples with high specificity. The specific binding of cTnI and aptamer could release triggered DNA (T-DNA) into solution to drive an HCR process, which produced plentiful active sites for eATRP initiators labeling followed by initiating eATRP process. With the development of eATRP, a great many of electroactive polymer probes were continually in situ formed to generate amplified current output for signal enhancement. Compared to no amplification, HCR-enhanced eATRP promoted the signals by ∼10-fold, greatly improving detection sensitivity for low-abundant cTnI analysis. Integrating MBs as capture carriers with HCR-enhanced eATRP as amplification strategy, this EC aptasensor achieved a low detection limit of 10.9 fg/mL for cTnI detection. Furthermore, the reliable detectability and anti-interference were confirmed in serum samples, indicating its promising application toward early diagnosis of cardiovascular diseases.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2022
·
IF 3.841
Xiaoyu Zou,Qian Zhao,Yikai Zhan,Min He,Yufei Liu,Yongji Gong
The copolymer of N-phenylmaleimide (N-PMI) and furan was combined by thermally reversible Diels-Alder reactions to prepare functionalized monomer N-phenylmaimide (F-NPMI). By setting a reasonable temperature floating instruction to achieve reversibly removing protection of N-PMI imide carbon double bonds (C=C) furan groups, control of supply/receptor comonomer pair (NPMI/St) Atomic transfer radical polymerization(ATRP) of deviation molar ratio, a functionalized heat-resistant molecule-sequence control N-phenylmaimide-maleic anhydride binary copolymer (PNMS) is prepared. FT-IR and 1 H and 13 C NMR analyses showed the successful preparation of the F-NPMI and sequence-controlled PNMS. Tg, DSC analysis further proves that sequence-controllable PNMS have good thermal stability (T d =452.5°C, T g =209.2°C). In addition, this paper draws that can reflect the reaction kinetics curve of polymerization process control and can reflect the N-PMI monomer into PNMS function relation curve of the speed of the polymer chain, effectively proves that PNMS sequence structure is effectively controlled in the polymerization process.
研究领域:
高分子化学
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材料科学
·
有机化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）